Caterpillar Mini Hydraulic Excavator 301.5

Swing Gear and Bearing - Lubricate

WARNING: Do not rotate the machine during lubrication. Danger of severe crushing that can cause severe injury or death.

Is the machine parked on a level surface?

Are all work tools lowered to the ground?

Is the hydraulic lockout control in the RAISED position?

Fittings (1), (2), and (3) for the swing cylinder, bearing, and gear are on the right side of the machine on the upper carriage.

Are the fittings wiped and lubricated?

Is the upper structure rotated for 90°?

Is grease applied to the fitting for the swing bearing?

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

Age of new seat belt before installing on seat

Complete seat belt system installed with new mounting hardware

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

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.

Steps for Blade Linkage Lubrication

Boom and Stick Linkage - Lubricate

Steps for Boom and Stick Linkage Lubrication

Steps for Bucket Linkage Lubrication

Steps for Swing Frame Pin Lubrication

Swing Gear and Bearing - Lubricate

WARNING: Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loose the cap slowly to relieve the pressure.

Cooling System Coolant Extender (ELC) - Add

For additional information on the addition of extender, see Operation and Maintenance Manual, SEBU6250, “Caterpillar Coolant Recommendations” or consult your Caterpillar dealer.

Sign off on the coolant extender addition