Caterpillar 72H PIPELAYER - Maintenance | Daily

Manual Link

Backup Alarm - Test

• Backup Alarm - Test

• In order to test the alarm for proper functioning, turn the engine start switch to the ON position.

• Apply the service brake. Release the parking brake. Move the speed range selector to the REVERSE position.

• The backup alarm should start to sound immediately. The backup alarm will continue to sound until the speed range selector is moved to the NEUTRAL position or to the FORWARD position.

Brakes, Indicators and Gauges - Test

• Inspect the dash panel for broken lenses, indicator lights, and switches.

Cab Filter (Fresh Air) - Clean/Inspect/Replace

• Start the engine.

• Raise all attachments.

• Depress the service brake pedal.

• Release the parking brake.

• While the brake pedal is depressed, move the directional control to the SECOND SPEED FORWARD position.

• Gradually increase the engine speed to full load speed. The machine should not move.

• Move the directional control to the NEUTRAL position.

• Reduce the engine speed to LOW IDLE. Engage the parking brake. Lower all attachments to the ground. Apply a slight down pressure. Stop the engine.

• Make any necessary repairs before you operate the machine.

Cooling System Coolant Level - Check

• Observe the sight glass in order to verify the level of the coolant. If the coolant completely covers the sight glass, the coolant level is okay. If the coolant level is visible in the sight glass, the coolant is low. Add coolant in order to fill the system.

• If additional coolant is necessary, open radiator access door (1). Remove filler cap (2) slowly in order to relieve the pressure.

• Maintain the coolant level above the sight gage in the coolant tank to area (3). Adding coolant above this area will cause the coolant to overflow the cooling system. If you need to add coolant daily, check the cooling system for leaks.

• Inspect filler cap (2) and the filler cap seal for debris, for foreign material, or for damage. Clean filler cap (2) with a clean cloth. Replace the radiator cap if the filler cap is damaged.

• Install the filler cap.

• Inspect the radiator core for debris. Clean the radiator core, if necessary.

Engine Oil Level - Check

• The engine oil level gauge relies on gravity. The machine must be on a level surface for an accurate check.

• Open the engine access cover that is on the left side of the machine.

• Check the engine oil level gauge while the engine is stopped and the oil is at cold. The engine oil level may also be checked while the engine is running at low idle and the oil is at operating temperature. Maintain the oil level in the operating area on the engine oil level gauge. The operating area is between the “ADD” mark and the “FULL” mark.

• Remove the oil filler cap. If necessary, add oil.

• Clean the oil filler cap and install the oil filler cap.

• Close the access cover.

Fuel System Primary Filter/Water Separator - Drain

• Open drain (3). The drain is a self-ventilated drain. Catch the draining water in a suitable container. Dispose of the water properly.

• Close drain (3).

Hydraulic System Oil Level - Check

• Maintain the oil level to the “FULL” mark in the sight gauge. Check the oil level when the oil is cold. Verify that the oil level is below the “FULL” mark before you remove the filler cap.

• If the hydraulic system requires additional hydraulic oil, remove the filler cap slowly in order to relieve any pressure. Add oil through the filler tube.

• Clean the filler cap and install the filler cap.

Seat Belt - Inspect

• Seat Belt - Inspect

• Inspect seat belt (2) for webbing that is worn or frayed. Replace the seat belt if the webbing is worn or frayed.

• Inspect all seat belt mounting hardware for wear or for damage. Replace any mounting hardware that is worn or damaged. Make sure that the mounting bolts are tight.

• If your machine is equipped with a seat belt extension, also perform this inspection procedure for the seat belt extension.

• Contact your Cat dealer for the replacement of the seat belt and the mounting hardware.

Transmission Oil Level - Check

• Open the access cover on the right side of the cab in front of the hydraulic tank.

• Remove the transmission oil level gauge (1). Maintain the oil level within the marks for the operating range on the dipstick. If the engine is at idle and the oil is warm, maintain the oil level within range (2). If the engine is stopped and the engine oil is cold, maintain the oil level within range (3).

• If necessary, add oil.

• Clean the filler cap and install the filler cap.

• Close the access cover.