Caterpillar Mini Hydraulic Excavator 301.7 CR

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

Cooling System Coolant (ELC) - Change

NOTICE: Do not change the coolant until you read and understand the cooling system information in Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations”. Failure to do so could result in damage to the cooling system components.

NOTICE: Mixing ELC with other products will reduce the effectiveness of the coolant. This could result in damage to cooling system components.

If Caterpillar products are not available and commercial products must be used, make sure they have passed the Caterpillar EC-1 specification for premixed or concentrate coolants and Caterpillar Extender.

Note: If cooling system samples Level 1 and Level 2 are not performed, and ELC not added, The coolant should be changed every 2 years.

Note: This machine was filled at the factory with Caterpillar Extended Life Coolant.

If the coolant in the machine is changed to Extended Life Coolant from another type of coolant, see Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations”.

Open the right side access door.

Loosen radiator cap (1) slowly to release pressure. Remove the radiator cap.

Boom and Stick Linkage - Lubricate

Boom, Stick, and Frame - Inspect

Cooling System Coolant Sample (Level 1) - Obtain

Engine Air Filter Primary Element - Clean/Replace

Final Drive Oil Sample - Obtain

Fuel Lift Pump Strainer - Replace

Fuel System Primary Filter (Water Separator) Element - Replace

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.

Water Pump Belt, Fan Drive Belt, and Alternator Belt

1. Open the engine access door.

Note: Use a 144-0235 Belt Tension Gauge to measure belt tension. Refer to Table 33 for proper belt tension adjustment.

4. If the tension is not correct, loosen bolt (1), and alternator mounting bolts (2) and (3). Adjust alternator position.

5. When the adjustment is correct, tighten bolt (1), and alternator mounting bolts (2) and (3) securely.

6. Check the tension of the belt again.