Caterpillar Mini Hydraulic Excavator 302 CR

Every 10 Service Hours or Daily First 100 Hours:

Wipe all fittings before lubricating.

1. Apply lubricant to the fittings for the arms (1) that support the blade.

2. Apply lubricant to the fittings of the blade cylinder (2).

Boom and Stick Linkage - Lubricate

Note: Caterpillar recommends the use of 5% molybdenum grease for lubricating the boom and stick linkage. Refer to Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations” for more information on grease.

1. Position the machine into the service position.

2. Wipe all fittings before you apply lubricant.

Note: At the time of changing oil, observe the oil for presence of metallic particles or other foreign matters. If you find something that needs attention, consult your Cat dealer.

1. Warm up the oil by roading the tracks. Draining the oil should be done when the oil is hot. Draining the oil when hot will help to prevent sludge.

2. Move the machine to level ground.

3. Position one of the final drives as shown in illustration 460

Note: Refer to Operation and Maintenance Manual, “General Hazard Information” for information on Containing Fluid Spillage.

4. Remove the oil level plug (1).

5. Remove the oil drain plug (2). Allow the oil to drain into a suitable container.

6. Clean the drain plug (2). Apply pipe sealant to the threads of the drain plug to prevent leakage. Reinstall the drain plug.

Date of seat belt installation (retractor)

Year of manufacture (tag) (fully extended web)

Year of manufacture (underside) (buckle)

Consulted Cat dealer for the replacement of the seat belt and the mounting hardware?

Date of new seat belt manufacture

New seat belt installed with new mounting hardware?

Date of installation labels marked and affixed to the seat belt retractor and buckle

Tighten the hold-downs for the battery in order to prevent the batteries from moving during machine operation.

Engine Valve Lash - Check/Adjust

Ensure that the engine cannot be started while this maintenance is being performed. To help prevent possible injury, do not use the starting motor to turn the flywheel.

Hot engine components can cause burns. Allow additional time for the engine to cool before measuring/adjusting valve lash clearance.

Steps to change Final Drive Oil

Hydraulic System Oil Filter (Return) - Replace

Steps to replace Hydraulic System Oil Filter

Air Cleaner Dust Valve - Clean/Inspect

2. The air filter housing is in the engine compartment.

3. Check the dust valve after every 10 service hours or at the end of each day. Actuate the valve by squeezing the lips of the valve to remove any accumulated debris.

Air Conditioner/Cab Heater Filter (Recirculation) - Inspect/Replace;

NOTICE: An air recirculation filter element plugged with dust will result in decreased performance and service life to the air conditioner or cab heater.

NOTICE: To prevent decreased performance, clean the filter element, as required.

NOTICE: Failure to reinstall the filter element for the air conditioning system will contaminate and damage the system components.