job sheet teknik kendaraan ringan - smk kp · pdf file1 job sheet teknik kendaraan ringan...
TRANSCRIPT
1
JOB SHEET TEKNIK KENDARAAN RINGAN
PEKERJAAN DASAR OTOMOTIF
2014/2015
TEKNOLOGI DAN REKAYASA
NAMA :
KELAS : IO
2
DINAS PENDIDIKAN,KEBUDAYAAN DAN OLAHRAGA KOTA METRO
YAYASAN PENDIDIKAN KARYA PEMBANGUNAN GAJAHMADA
SEKOLAH MENENGAH KEJURUAN (SMK) KP GAJAHMADA 1 METRO
KELOMPOK TEKNOLOGI DAN REKAYASA
Bidang Keahlian : Teknik Mekanik Otomotif Status Terakreditasi
Alamat : Jalan Jenderal Sudirman Ganjaragung 14/II Kota Metro Telp (0725) 47674 E-Mail : smkgama 1 [email protected]
JOB SHEET SILINDER BLOK
1. Tujuan : Setelah praktek diharapkan siswa dapat
Membongkar dan memasang kembali silinder blok dengan benar
Menjelaskan fungsi komponen silinder blok dengan benar
Menjelaskan fungsi utama silinder blok dengan benar
Membuat laporan kerja
2. Alat Dan Bahan
1 unit mesin bensin
Kunci ring 10/11, 12/13, 14/15,16/17
Kunci pas 10/11, 12/13
Obeng + -
Palu
3. Keselamatan kerja
Menggunakan peralatan dan perlengkapan keselamatan kerja
Menggunakan peralatan sesuai dengan fungsinya
Membersihkan dan merapikan kembali ruang, peralatan setelah selesai
4. Langkah kerja
Menyiapkan alat dan bahan
Melepaskan seluruh komponen yang berada pada silinder blok
Mengindentifikasi komponen silinder blok pada mesin
Membersihkan komponen
Menyiapkan data untuk laporan
Memasang kembali komponen dengan urutan kerja yang benar
Membuat laporan
3
5. Data kegiatan praktek
Urutan pembongkaran
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
6. Konstruksi
Blok silinder merupakan bentuk dasar dari mesin yang berfungsi untuk :
.............................................................................................................................................
Blok silinder terbuat dari bahan ...........................................................................................
Pada bagian luar terdapat dudukan-dudukan untuk menempatkan kelengkapan mesin seperti:
.............................................................................................................................................
Bila dilihat dari susunan silinder, blok silinder dibedakan antara lain :
a. .......................................................................................................................................
b. .......................................................................................................................................
c. .......................................................................................................................................
Tabung silinder ( cylinder boore ) dibuat dengan tujuan agar jika terjadi kerusakan cukup diganti
tabung silindernya. Ada 2 jenis tAbung silinder yaitu
1...............................................
2..............................................
4
Gambar komponen
Keterangan gambar
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
5
7. Nama dan fungsi komponen
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
8. Prosedur pemeriksaan dengan alat ukur
Bersihkan tabung silinder blok
Memilih alat ukur yang tepat
Mengkalibrasi alat ukur
Melakukan pemeriksaan pada silinder blok seperti petunjuk pada gambar
D - Diameter Silinder…………………mm
- Panjang langkah piston………..mm
- Volume langkah……………………..cc
L
6
9. Urutan pemasangan
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
10. Kesimpulan
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
Catatan
Diperiksa
Instruktur
ISWAHYUDI, S.T
7
DINAS PENDIDIKAN,KEBUDAYAAN DAN OLAHRAGA KOTA METRO
YAYASAN PENDIDIKAN KARYA PEMBANGUNAN GAJAHMADA
SEKOLAH MENENGAH KEJURUAN (SMK) KP GAJAHMADA 1 METRO
KELOMPOK TEKNOLOGI DAN REKAYASA
Bidang Keahlian : Teknik Mekanik Otomotif Status Terakreditasi
Alamat : Jalan Jenderal Sudirman Ganjaragung 14/II Kota Metro Telp (0725) 47674 E-Mail : smkgama 1 [email protected]
JOB SHEET PISTON
1. Tujuan : Setelah praktek diharapkan siswa dapat
Membongkar dan memasang kembali piston dengan benar
Menjelaskan fungsi komponen piston dengan benar
Menjelaskan fungsi utama piston dengan benar
Membuat laporan kerja
2. Alat Dan Bahan
1 unit mesin bensin
Kunci ring 10/11, 12/13, 14/15,16/17
Kunci pas 10/11, 12/13
Obeng + -
Palu
3. Keselamatan kerja
Menggunakan peralatan dan perlengkapan keselamatan kerja
Menggunakan peralatan sesuai dengan fungsinya
Membersihkan dan merapikan kembali ruang, peralatan setelah selesai
4. Langkah kerja
Menyiapkan alat dan bahan
Melepaskan seluruh komponen yang berada pada mesin
Mengindentifikasi komponen piston pada mesin
Membersihkan komponen
Menyiapkan data untuk laporan
Memasang kembali komponen dengan urutan kerja yang benar
Membuat laporan
8
5. Data kegiatan praktek
Urutan pembongkaran
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
6. Konstruksi
Piston dibuat dari bahan yang............................,ringan, dan............................................................
Piston apabila kena panas akan mengembang dan beresiko macet , maka untuk menghindari itu
piston dibuat......................................................................................................................................
Piston mempunyai ukuran yang ditentukan oleh pabrik yaitu ukuran STD ( standar ), bila ukuran
standar sudah rusak sebagai penggantinya dipasang piston yang ukurannya lebih besar yang
disebut...........................................................................................................
Otomatis lubang silinder dilebarkan disesuaikan dengan ukuran pistonnya, pelebaran lubang
silinder disebut................................................................................................
9
Gambar komponen
Keterangan gambar
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
7. Nama dan fungsi komponen
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………………..
10
8. Kegiatan pengukuran
- Bersihkan bagian penampang piston
- Lakukan pengukuran dengan mistar sorong sesuai petunjuk gambar
A A
B B
C C
- Menentukan ketirusan piston
Piston No 1 Piston No 2 Piston No 3
ФA =........................ ФA = .................. ФA =................
ФB =........................ ФB =................... ФB =................
ФC =........................ ФC =................... ФC =................
9. Syarat-syarat yang harus dimiliki piston ketika digunakan untuk mesin
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
10. Urutan pemasangan
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
11
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
…………………………………………………………………………….....................................................................
.....................................................................................................................................................
11. Kesimpulan
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
…………………………………………………………………………….....................................................................
Catatan
Diperiksa
Instruktur
ISWAHYUDI, S.T
12
DINAS PENDIDIKAN,KEBUDAYAAN DAN OLAHRAGA KOTA METRO
YAYASAN PENDIDIKAN KARYA PEMBANGUNAN GAJAHMADA
SEKOLAH MENENGAH KEJURUAN (SMK) KP GAJAHMADA 1 METRO
KELOMPOK TEKNOLOGI DAN REKAYASA
Bidang Keahlian : Teknik Mekanik Otomotif Status Terakreditasi
Alamat : Jalan Jenderal Sudirman Ganjaragung 14/II Kota Metro Telp (0725) 47674 E-Mail : smkgama 1 [email protected]
JOB SHEET MEKANISME KATUP
1. Tujuan : Setelah praktek diharapkan siswa dapat
Membongkar dan memasang kembali mekanisme katup dengan benar
Menjelaskan fungsi komponen mekanisme katup dengan benar
Menjelaskan fungsi utama mekanisme katup dengan benar
Membuat laporan kerja
2. Alat Dan Bahan
1 unit mesin bensin
Klem C
Kunci ring 10/11, 12/13, 14/15
Kunci pas 10/11, 12/13
Obeng + -
3. Keselamatan kerja
Menggunakan peralatan dan perlengkapan keselamatan kerja
Menggunakan peralatan sesuai dengan fungsinya
Membersihkan dan merapikan kembali ruang, peralatan setelah selesai
4. Langkah kerja
Menyiapkan alat dan bahan
Melepaskan seluruh komponen yang berada pada silinder head
Mengindentifikasi komponen mekanisme katup pada mesin
Membersihkan komponen
Menyiapkan data untuk laporan
Memasang kembali komponen dengan urutan kerja yang benar
Membuat laporan
13
5. Konstruksi mekanisme katup
Mesin dilengkapi dengan katup yang berfungsi untuk..............................................
Kepala katup sering disebut dengan nama daun katup untuk katup isap diameternya dibuat lebih besar , hal ini bertujuan agar....................................................................... Sebab gas yang masuk kedalam silinder hanya mengandalkan perbedaan tekanan
antara udara dari luar dengan penurunan tekanan dalam silinder.Sedangkan katup
buang diamaternya lebih kecil dengan harapan agar......................................................
Jika terjadi kerusakan pada katup maka akan terjadi......................................................
Gambar komponen mekanisme katup
Keterangan gambar 1. ............................... 8. ............................... 2. ............................... 9. ............................... 3. ............................... 10. ............................... 4. ............................... 11. ............................... 5. ............................... 12. ............................... 6. ............................... 13 ............................... 7. ............................... 14. ...............................
15. ...............................
14
6. Nama dan fungsi komponen mekanisme katup
1. ....................................................................................................................... .......................................................................................................................
2. ....................................................................................................................... .......................................................................................................................
3. ....................................................................................................................... .......................................................................................................................
4. ....................................................................................................................... .......................................................................................................................
5. ....................................................................................................................... .......................................................................................................................
6. ....................................................................................................................... .......................................................................................................................
7. ....................................................................................................................... .......................................................................................................................
8. ....................................................................................................................... .......................................................................................................................
9. ....................................................................................................................... .......................................................................................................................
10. ....................................................................................................................... .......................................................................................................................
11. ....................................................................................................................... .......................................................................................................................
12. ....................................................................................................................... .......................................................................................................................
13. ....................................................................................................................... .......................................................................................................................
14. ....................................................................................................................... .......................................................................................................................
15. ....................................................................................................................... .......................................................................................................................
Kegiatan pengukuran - Bersihkan seluruh komponen mekanisme katup - Lakukan pengukuran pada katup mesin sesuai petunjuk gambar - Menentukan ketirusan
Katup silinder No 1 Katup silinder No 2 ФA =............ ФA =............... ФB =............ ФB =................ ФC =............ ФC =................
A A
B B
C C
15
7. Penggerak komponen mekanisme katup dapat dibedakann menjadi 3 yaitu
1.....................................................................................................................
2.....................................................................................................................
3.....................................................................................................................
8. Cara kerja mekanisme katup
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………...................
..............................................................................................................................................
9. Kesimpulan
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………...................
..............................................................................................................................................
catatan
Diperiksa
Instruktur
ISWAHYUDI, S.T
16
DINAS PENDIDIKAN,KEBUDAYAAN DAN OLAHRAGA KOTA METRO
YAYASAN PENDIDIKAN KARYA PEMBANGUNAN GAJAHMADA
SEKOLAH MENENGAH KEJURUAN (SMK) KP GAJAHMADA 1 METRO
KELOMPOK TEKNOLOGI DAN REKAYASA
Bidang Keahlian : Teknik Mekanik Otomotif Status Terakreditasi
Alamat : Jalan Jenderal Sudirman Ganjaragung 14/II Kota Metro Telp (0725) 47674 E-Mail : smkgama 1 [email protected]
JOB SHEET POROS ENGKOL ( CRANK SHAFT )
1. Tujuan : Setelah praktek diharapkan siswa dapat
Membongkar dan memasang kembali poros engkol dengan benar
Menjelaskan fungsi komponen poros engkol dengan benar
Menjelaskan fungsi utama poros engkol dengan benar
Membuat laporan kerja
2. Alat Dan Bahan
1 unit mesin bensin
Kunci ring 10/11, 12/13, 14/15,16/17
Kunci pas 10/11, 12/13
Obeng + -
Palu
3. Keselamatan kerja
Menggunakan peralatan dan perlengkapan keselamatan kerja
Menggunakan peralatan sesuai dengan fungsinya
Membersihkan dan merapikan kembali ruang, peralatan setelah selesai
4. Langkah kerja
Menyiapkan alat dan bahan
Melepaskan seluruh komponen yang berada pada mesin
Mengindentifikasi komponen poros engkol pada mesin
Membersihkan komponen
Menyiapkan data untuk laporan
Memasang kembali komponen dengan urutan kerja yang benar
Membuat laporan
17
5. Data praktek
Urutan pembongkaran ...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
Gambar komponen
Keterangan gambar ...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
18
6. Fungsi komponen Crank Shaft ...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
7. Mengukur benda kerja
Crank pin
Posisi mengukur benda kerja
Posisi mengukur benda kerja
I
X1 :
X2 :
Y1 :
Y2 :
II
X1 :
X2 :
Y1 :
Y2 :
III
X1 :
X2 :
Y1 :
Y2 :
IV
X1 :
X2 :
Y1 :
Y2 :
19
8. Mengolah data pengukuran
Menentukan ketirusan: ....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
Ketirusan maksimum .......mm
Ketirusan minimum .......mm
Menentukan keovalan : ....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
Keovalan maksimum........mm
Keovalan minimum ........mm
20
9. Urutan pemasangan ....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
10. Kesimpulan
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
Catatan
Diperiksa
Instruktur
ISWAHYUDI,S.T
21
DINAS PENDIDIKAN,KEBUDAYAAN DAN OLAHRAGA KOTA METRO
YAYASAN PENDIDIKAN KARYA PEMBANGUNAN GAJAHMADA
SEKOLAH MENENGAH KEJURUAN (SMK) KP GAJAHMADA 1 METRO
KELOMPOK TEKNOLOGI DAN REKAYASA
Bidang Keahlian : Teknik Mekanik Otomotif Status Terakreditasi
Alamat : Jalan Jenderal Sudirman Ganjaragung 14/II Kota Metro Telp (0725) 47674 E-Mail : smkgama 1 [email protected]
JOB SHEET OVERHOUL ENGINE
1. Tujuan : Setelah praktek diharapkan siswa dapat
Membongkar dan memasang kembali seluruh komponen mesin dengan
benar
Menjelaskan fungsi komponen – komponen mesin dengan benar
Menjelaskan tanda-tanda pemasangan komponen mesin dengan benar
Membuat laporan kerja
2. Alat Dan Bahan
1 unit mesin
Kunci momen
Kunci shock
Kunci ring 10/11, 12/13, 14/15,16/17
Kunci pas 10/11, 12/13
Obeng + -
Palu
3. Keselamatan kerja
Menggunakan peralatan dan perlengkapan keselamatan kerja
Menggunakan peralatan sesuai dengan fungsinya
Membersihkan dan merapikan kembali ruang, peralatan setelah selesai
4. Langkah kerja
Menyiapkan alat dan bahan
Melepaskan seluruh komponen yang berada pada mesin
Mengindentifikasi seluruh komponen pada mesin
Membersihkan komponen
Menyiapkan data untuk laporan
Memasang kembali komponen dengan urutan kerja yang benar
Membuat laporan
22
5. Data kegiatan praktek
Menurut siklus kerja motor dibedakan menjadi dua yaitu :
- Motor 4 takt, dimana jumlah langkah yang terjadi pada siklus ini adalah
.....................................................................................................................
.....................................................................................................................
- Motor 2 takt, dimana jumlah langkah yang terjadi pada siklus ini adalah
.....................................................................................................................
.....................................................................................................................
Mesin bensin terdiri dari mesin itu sendiri dan berbagal macam alat bantu
lainnya. Sedang mesin itu sendiri terdiri dari, blok cylinder, ..................piston,
........................., dan............................... . Alat bantu lainnya pada mesin
dirancang untuk menopang kerja mesin. Diantaranya, pelumasan,
pendinginan, ....................................dan............................... (intake and
exhaust), ..................................... dan sistem kelistrikan.
Gambar komponen mesin
23
Keterangan gambar
1. ........................................................... 11. ................................................... 2. ........................................................... 12. ................................................... 3. ........................................................... 13. ................................................... 4. ........................................................... 14. ................................................... 5. ........................................................... 15. ................................................... 6. ........................................................... 16. ................................................... 7. ........................................................... 17. ................................................... 8. ........................................................... 18. ................................................... 9. ........................................................... 19. ................................................... 10. ........................................................... 20. ...................................................
6. Nama dan fungsi komponen
1. ..........................................................................................................................................................................................................................................................................................
2. ..........................................................................................................................................................................................................................................................................................
3. ..........................................................................................................................................................................................................................................................................................
4. ..........................................................................................................................................................................................................................................................................................
5. ..........................................................................................................................................................................................................................................................................................
6. ..........................................................................................................................................................................................................................................................................................
7. ..........................................................................................................................................................................................................................................................................................
8. ..........................................................................................................................................................................................................................................................................................
9. ..........................................................................................................................................................................................................................................................................................
10. ..........................................................................................................................................................................................................................................................................................
11. ..........................................................................................................................................................................................................................................................................................
12. ..........................................................................................................................................................................................................................................................................................
13. ..........................................................................................................................................................................................................................................................................................
14. ..........................................................................................................................................................................................................................................................................................
15. ..........................................................................................................................................................................................................................................................................................
16. ..........................................................................................................................................................................................................................................................................................
17. ..........................................................................................................................................................................................................................................................................................
18. ..........................................................................................................................................................................................................................................................................................
19. ..........................................................................................................................................................................................................................................................................................
20. ..........................................................................................................................................................................................................................................................................................
24
7. Tanda / kode penting yang terdapat pada bagian mesin
1. .................................................................................
2. .................................................................................
3. .................................................................................
4. .................................................................................
5. .................................................................................
8. Nama / istilah yang terdapat pada mesin
1. TOP artinya .........................................................................................................................
2. Remer artinya......................................................................................................................
3. Oversize artinya...................................................................................................................
4. Undersize artinya.................................................................................................................
5. OHV artinya..........................................................................................................................
6. OHC artinya..........................................................................................................................
7. DOHC artinya.......................................................................................................................
8. Tune up artinya....................................................................................................................
25
9. Kesimpulan ...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
CATATAN
Diperiksa
Guru budang studi
ISWAHYUDI, S.T
26
DINAS PENDIDIKAN,KEBUDAYAAN DAN OLAHRAGA KOTA METRO
YAYASAN PENDIDIKAN KARYA PEMBANGUNAN GAJAHMADA
SEKOLAH MENENGAH KEJURUAN (SMK) KP GAJAHMADA 1 METRO
KELOMPOK TEKNOLOGI DAN REKAYASA
Bidang Keahlian : Teknik Mekanik Otomotif Status Terakreditasi
Alamat : Jalan Jenderal Sudirman Ganjaragung 14/II Kota Metro Telp (0725) 47674 E-Mail : smkgama 1 [email protected]
JOB SHEET SILINDER HEAD
1. Tujuan : Setelah praktek diharapkan siswa dapat
Membongkar dan memasang kembali silinder head dengan benar
Menjelaskan fungsi komponen silinder head dengan benar
Menjelaskan fungsi utama silinder head dengan benar
Membuat laporan kerja
2. Alat Dan Bahan
1 unit mesin bensin
Kunci momen
Kunci ring 10/11, 12/13, 14/15
Kunci pas 10/11, 12/13
Obeng + -
3. Keselamatan kerja
Menggunakan peralatan dan perlengkapan keselamatan kerja
Menggunakan peralatan sesuai dengan fungsinya
Membersihkan dan merapikan kembali ruang, peralatan setelah selesai
4. Langkah kerja
Menyiapkan alat dan bahan
Melepaskan seluruh komponen yang berada pada silinder head
Mengindentifikasi komponen silinder head pada mesin
Membersihkan komponen
Menyiapkan data untuk laporan
Memasang kembali komponen dengan urutan kerja yang benar
Membuat laporan
27
5. Data kegiatan praktek
Urutan pembongkaran
………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………
……......................................................................................................................................
Konstruksi
Kepala silinder adalah salah satu komponen utama mesin yang ditempatkan
atas..........................................................................
Dari segi konstruksi kepala silinder harus mampu terhadap temperatur dan tekanan
yang tinggi selama mesin beroperasi.Untuk tujuan tersebut pada umumnya kepala
silinder terbuat dari ...........................................
Namun belakangan ini kepala silinder dibuat dari paduan almunium yang mampu
mendinginkan mesin itu sendiri.
Gambar kepala silindel
28
Keterangan gambar
.......................................................................................................................................
.......................................................................................................................................
.......................................................................................................................................
.......................................................................................................................................
.......................................................................................................................................
.......................................................................................................................................
.......................................................................................................................................
6. Nama dan fungsi komponen Kepala Silinder
7. ..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
8. Kegiatan pemeriksaan
Membersihkan seluruh permukaan Kepala Silinder
Gunakan pengukur Mistar Baja dan Feller Gouge untuk melakukan pemeriksaan
Lakukan pemeriksaan seperti petunjuk pada gambar
29
9. Hasil pemeriksaan
Posisi B =..........mm
Posisi A = ..........mm
Posisi C =.........mm
Posisi D =.........mm
Posisi E =.........mm
Posisi F =........mm
Posisi G =..........mm
30
11. Fungsi utama dari Kepala Silinder
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
12. Kesimpulan
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
Catatan
Diperiksa
Instruktur
ISWAHYUDI, S.T
31
DINAS PENDIDIKAN,KEBUDAYAAN DAN OLAHRAGA KOTA METRO
YAYASAN PENDIDIKAN KARYA PEMBANGUNAN GAJAHMADA SEKOLAH MENENGAH KEJURUAN (SMK) KP GAJAHMADA 1 METRO
KELOMPOK TEKNOLOGI DAN REKAYASA
Bidang Keahlian : Teknik Mekanik Otomotif Status Terakreditasi
Alamat : Jalan Jenderal Sudirman Ganjaragung 14/II Kota Metro Telp (0725) 47674 E-Mail : smkgama 1 [email protected]
JOB SHEET SISTEM PENGAPIAN
1. Tujuan : setelah mengikuti kegiatan praktek diharapkan siswa dapat
Mengetahui fungsi sistem pengapian pada mesin dengan benar
Menjelaskan fungsi masing-masing komponen sistem pengapian mesin dengan
benar
Membuat rangkaian sistem pengapian mesin dengan benar
Membuat laporan praktek
2. Alat Dan Bahan
1 Unit sistam pengapian mesin
Baterai
Obeng + -
Tang
3. Keselamtan kerja
Menggunakan peralatan dan perlengkapan keselamatan kerja
Menggunakan peralatan sesuai dengan fungsinya
Membersihkan dan merapikan kembali ruang, peralatan setelah selesai
4. Langkah kerja
Menyiapkan alat dan bahan
Mengindentifikasi komponen sistem pengapian mesin
Melepaskan seluruh komponen sistem pengapian mesin dengan hati-hati
Menyiapakan data utuk laporan praktek
Merangkai kembali sistem pengapian mesin dengan benar
Membuat laporan pratek
32
5. Data kegiatan praktek
Sistem pengapian pada kendaraan menghasilkan tegangan tinggi yang diperlukan
untuk membakar campuran bahan bakar dan udara didalam silinder pada motor
bensin.
Sistem pengapian harus mampu menghasilkan percikan bunga api pada busi pada
waktu yang tepat, yaitu beberapa derajat sebelum pisto TMA pada langkah
kompresi. Percikan bunga api yang dihasilkan dari busi akan membakar campuran
bahan bakar dan udara sehingga menghasilkan usaha ( tenaga ).
Gambar Fering diagram Sistem Pengapian mesin 4 silinder ( FO 1342 )
Keterangan gambar
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
33
6. Nama dan fungsi komponen
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
7. Fungsi utama dari sistem pengapian
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
8. Cara kerja Sistem Pengapian
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
..............................................................................................................................................
34
9. Kesimpulan
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
Catatan
Diperiksa
Instruktur
ISWAHYUDI, S.T
35
DINAS PENDIDIKAN,KEBUDAYAAN DAN OLAHRAGA KOTA METRO
YAYASAN PENDIDIKAN KARYA PEMBANGUNAN GAJAHMADA SEKOLAH MENENGAH KEJURUAN (SMK) KP GAJAHMADA 1 METRO
KELOMPOK TEKNOLOGI DAN REKAYASA
Bidang Keahlian : Teknik Mekanik Otomotif Status Terakreditasi
Alamat : Jalan Jenderal Sudirman Ganjaragung 14/II Kota Metro Telp (0725) 47674 E-Mail : smkgama 1 [email protected]
JOB SHEET SISTEM PENDINGINAN
1. Tujuan : setelah mengikuti kegiatan praktek diharapkan siswa dapat
Mengetahui fungsi dari Sistem Pelumasan mesin dengan benar
Mengetahui komponen – komponen Sistem Pelumasan mesin dengan benar
Menjelaskan fungsi masing-masing komponen Sistem Pelumasan mesin dengan benar
Membongkar dan memasang kembali komponen Sistem Pelumasan mesin dengan benar
Membuat laporan praktek
2. Alat Dan Bahan
1 Unit Sistem Pelumasan mesin
Kunci 10/11, 12/13, 14/15
Kunci T
Pelepas Filter Oli
Obeng + -
3. Keselamtan kerja
Menggunakan peralatan dan perlengkapan keselamatan kerja
Menggunakan peralatan sesuai dengan fungsinya
Membersihkan dan merapikan kembali ruang, peralatan setelah selesai
4. Langkah kerja
Menyiapkan alat dan bahan praktek
Mengindentifikasi komponen Sistem Pelumasan mesin
Melepaskan seluruh komponen Sistem Pelumasan mesin dengan urutan kerja yang benar
Menyiapkan data untuk laporan praktek
Memasang kembali komponen Sistem Pelumasan mesin dengan urutan kerja yang benar
Membuat laporan praktek
36
5. Data kegiatan praktek
Pelumas memegang peranan penting dalam desain dan operasi
semua mesin otomotif. Umur dan service yang diberikan oleh mobil
tergantung pada perhatian yang kita berikan pada pelumasannya.
Pada motor bakar, pelumasan bahkan lebih sulit dibanding pada
mesin-mesin lainnya, karena di sini terdapat panas terutama di
sekitar torak dan silinder, sebagai akibat leadakan dalam ruang
pembakaran.
Gambar komponen
Keterangan gambar
1. .............................................. 9. ...................................... 2. .............................................. 10. ...................................... 3. .............................................. 11. ...................................... 4. .............................................. 12. ...................................... 5. .............................................. 13. ...................................... 6. .............................................. 14. ...................................... 7. .............................................. 15. ...................................... 8. .............................................. 16. ......................................
6. Fungsi Sistem pelumasan pada mesin
1. ........................................................................................................................... 2. ........................................................................................................................... 3. ...........................................................................................................................
37
4. ........................................................................................................................... 5. ...........................................................................................................................
7. Skema diagram Sistem pelumasan
8. Cara kerja Sistem Pelumasan ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
38
9. Kesimpulan ...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
...........................................................................................................................................................
Catatan
Diperiksa
Instruktur
ISWAHYUDI, S.T