Lesson 4APPLYING PREVENTATIVE MAINTENANCE PRACTICES

Next Generation Science / Common Core Standards Addressed!

CCSS.ELA Literacy.RST.9‐10.1 Cite specific textual evidence to support analysis of science and technical texts, attending to the precise details of explanations or descriptions.

CCSS.ELA Literacy.RST.9‐ 10.3 Follow precisely a complex multistep procedure when carrying out experiments, taking measurements, or performing technical tasks, attending to special cases or exceptions defined in the text.

CCSS.ELA Literacy. RST.11‐12.2 Determine the central ideas or conclusions of a text; summarize complex concepts, processes, or information presented in a text by paraphrasing them in simpler but still accurate terms.

CCSS.ELA Literacy.RST.11‐12.3 Follow precisely a complex multistep procedure when carrying out experiments, taking measurements, or performing technical tasks; analyze the specific results based on explanations in the text.

HSNQ.A.3 Choose a level of accuracy appropriate to limitations on measurement when reporting quantities. (HS‐PS1‐2),(HSPS1‐4),(HS‐PS1‐5),(HS‐PS1‐7)

HSSIC.B.6 Evaluate reports based on data. (HS‐LS2‐6)

Bell Work / Student Learning Objectives

Explain the importance of preventative maintenance on engines and equipment

Explain the safety practices to follow when servicing equipment

Identify common maintenance practices associated with major engine systems

Terms

Compression gage

Flooding

Preventative maintenance

Interest Approach

List the reasons why it is important to follow the preventative maintenance schedule.

Preventative maintenance

Performing of practices to keep equipment in good working conditionProperly maintaining

agricultural equipment requires skill, practice, and quality management

Preventative maintenance practices

Changing fluids

Cleaning components

Replacing filters

Safety practices

Read and follow all instructions in the operator’s manual

Know all the safety emblems and warning signs used for agricultural equipment

Use protective eyewear, clothing, and footwear

Safety practices (continued)

Use jack stands, engine stands, and other supports

Observe caution around fuels and flammable materials

Operate internal combustion engines in well-ventilated areas

Place machines in park and lower implements before working on them

Safety practices (continued)

Work in well-lighted and properly ventilated areas

Regularly clean the floor and remove obstacles and fluids

Handle batteries safely

Keep fire extinguishers and smoke detectors in shop work areas

Safety practices (continued)

Use caution when working around high pressure

Use protective hearing devices when working in loud areas

Safely dispose of used fluids

Nine safety colors

Red – dangerOrange – warningYellow – cautionBlue – informationGreen – safetyBlack & yellow diagonal lines -

radioactivity

Nine safety colors (continued)

White – direction of traffic flows and segregate work areas

White & black stripes – traffic markings

Gray – floors or work areas in the shop

Ninesafetycolors

Ignition system checks

Inspect the spark plug Inspect the spark plug wireCheck the spark output using a

spark testerCheck the flywheel

Partsof aspark plug

Fuel system checks Insure that there is gas in the gas

tankCheck the spark plug for gasolineCheck the flow of gas from the

fuel tank to the fuel injector or carburetor on older equipment

Flooding – an excessive amount of gasoline in the carburetor in older equipment.

Compression system checks

Compression gage – determines compression pressure of the cylinder

Liquid cooling system checks

Check the hoses and belts for leaks and cracks

Maintain the proper coolant level Keep the system clean Use recommended coolant Pressurize the system and check for leaks Check the specific gravity of the coolant Check the condition of the fan

Air cooling system checks

Remove dirt that can clog air passages

Make sure the pre-cleaner is in place

Check the fan Makes sure all shrouds are in

place

Lubrication system checksCheck the

engine oil level

Change the oil and filters

Air intake system checks

Connect a vacuum gauge to the intake manifold

Allow the engine to run for a few minutes

Record the age reading with the engine operating

Compare the readings to the manufacturer’s specifications

Inspect the intake system for possible restrictions and leaks

Review/Summary

Why is it important to practice preventative maintenance on engines and equipment?

What are the safety rules to follow when servicing agricultural equipment?

What are some common maintenance practices carried out on engine systems?

The End!