4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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2013 BMW X3 xDrive 28i (F25) L4-2.0L Turbo (N20)Vehicle > Engine, Cooling and Exhaust > Engine > Timing Components > Timing Chain > Service and Repair >Removal and Replacement
REPLACING TIMING CHAIN (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22]
Replacing (N20, N26)timing chainREP-REP-RAF1011N20-1131051 - V.22
11 31 051 Replacing timing chain (N20, N26)
Special tools required:
11 4 120
11 9 260
11 0 300
11 8 180
2 222 742
83 30 2 212 831
2 212 825
Necessary preliminary work:
Remove cylinder head cover
Remove all spark plugs
Remove vibration damper
Remove front crankshaft seal
Check timing
Remove oil sump
4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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Push back the with the (1).
chain tensioner tensioningrail
Secure chain tensioner using special tool .11 4 120
Engine removed:
Block at flywheel with special tool.
crankshaft11 9 260
Caution!To release central bolt (1), remove special tool
.11 0 300
Vehicles with manual gearbox:
Attach special tool to manual gearbox withexisting gearbox bolts (1).
11 8 180
Block crankshaft in direction of arrow with specialtool.
Caution!To release central bolt (1), remove special tool
.11 0 300
4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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Vehicles with automatic transmission:
Block crankshaft with special tool .2 222 742
Feed in special tool, slide screw forward and tighten.
Caution!To release central bolt (1), remove special tool
.11 0 300
Caution!To release central bolt (1), remove special tool
.11 0 300
Caution!Breakaway torque of central bolt: > 600 Nm.
A 3/4 inch tool (2) is needed to release thecentral bolt.
Release central bolt (1).
Tightening torque:
11 21 1AZ Type ThreadTightening specifications
Dimension
1AZ Torsiondamper(hub) tocrankshaft
(centralbolt 12.9)
N20 /N26
M18x108
Replacescrew
Lightly oilscrewandthread
Jointingtorque
100Nm
Angle ofrotation 270°
4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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Caution!Remove special tool (1) to release the centralbolts on the intake and adjusters.
exhaust camshaft
Remove .intake and exhaust camshaft adjusters
Order number: 83 30 2 212 831
Remove .chain tensioner
Screw in vibration absorber screws (1).
Pull out hub (2) on crankshaft forward in direction ofarrow.
Open screw plug (1).
Tightening torque:
11 31 8AZ Type Thread
Tightening specifications
Dimension
8AZ Screw plugin cylinderhead
N20 / N26 M18x1.525Nm
4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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Release bearing journal (1) from timing chain moduleon cylinder head.
Tightening torque:
11 31 6AZ TypeThread
Tightening specifications
Dimension
6AZ tocylinderhead
Guide rail
N20 / N26 M714Nm
Release screw plugs (1 and 2).
Tightening torque:
11 11 4AZ Type ThreadTighteningspecifications
Dimension
4AZ Screwplug forupperpart ofgearcase
N20 /N26
M22x1.5
Replacescrew withsealingring.
50Nm
4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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Release bearing journal (1) on left and right of timingchain module for timing chain on .crankcase
Installation note:Rinse thread of the bearing journal with brakecleaner.
Tightening torque:
11 31 5AZ TypeThread
Tighteningspecifications
Dimension
5AZ Guide rail tocrankcase
N20 /N26
M8
Replacebearingjournal.Rinsethreadwith brakecleaner.
24Nm
Release bolts (1) from timing chain module oncylinder head.
Tightening torque:
11 31 4AZ Type Thread
Tighteningspecifications
Dimension
4AZ Chain drivemodule tocylinderhead
N20 / N26 M6x3510Nm
Remove chain module with timing chain and upwards.camshaft sprocket
4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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Remove timing chain module (1) upward.
Caution!Note direction of installation of sprocket (2).
camshaft
Collar (see arrow) on camshaft sprocket (2)points to .engine
Incorrect assembly will result in .
enginedamage
Caution!The sprocket must be renewed.
It is necessary to replace the chain drive with alaser structure.
4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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Pull timing chain upwards until camshaftsprocket engages chain guide (1).
Install timing chain and camshaft sprocket in thisposition.
Installation note:Permanently hold timing chain under tension.Timing chain may jam on chain guide (1).
Caution!After loosening the central screw, onlysprockets (1) with a laser structure arepermitted.
For the laser structure on the sprocket (1), see arrow.
.Sprockets with grip discs are no longer permissible
Installation note:Observe mounting flats on camshaftsprocket (1).
Before installation: Press back chain tensioner withtensioning rail and secure with special tool .11 4 120
4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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Caution!Grip disc (1) is only installed on vehicles withmanual gearbox.
Installation note:Grip disc (1) must be (manual gearboxonly)
removed
If the grip disc (1) is mounted, the central boltcan come loose (engine damage).
Loosen sealing cap using a screwdriver.
Installation note:Turn engine at central bolt until special tool
can be positioned in .
2 212 825 counterbalanceshaft
Secure special tool to housingwith screw (1).
2 212 825 oil pump
4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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Fit hub and central bolt (1).
Remove special tool .11 4 120
4/16/2020 Replacing Timing Chain (N20, N26) [REP-REP-RAF1011N20-1131051 - V.22] (Timing Chain) - ALLDATA Repair
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Insert central bolt (1) with hub for crankshaft.
Tighten down central bolt (1).
Tightening torque:
11 21 1AZ Type ThreadTightening specifications
Dimension
1AZ Torsiondamper(hub) tocrankshaft
(centralbolt 12.9)
N20 /N26
M18x108
Replacescrew
Lightly oilscrewandthread
Jointingtorque
100Nm
Angle ofrotation 270°
Install .intake and exhaust camshaft adjusters
Remove all special tools.
Crank engine twice.
Check .timing
Replace front .crankshaft seal
Assemble engine.