Komatsu Bulldozer D51EX-24

Warning: Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn injury. Wait for the temperature to go down, and then start the work.

Warning: When the oil filler cap is removed, oil may spurt out. Turn the cap slowly to release the internal pressure, then remove it carefully.

Warning: Stop the engine, and turn the starting switch and the battery disconnect switch keys to OFF positions when handling the battery.

Prepare an oil container to receive the oil, a filter wrench, and hose.

Lower the work equipment to the ground and stop the engine.

Loosen the cap of oil filler port (F) slowly on the top of the hydraulic tank to release the internal pressure in the hydraulic tank.

Open the hydraulic tank inspection cover on the left side of the machine.

Remove the grommet (1) at the lower part of the hydraulic tank.

Material quality of these parts can change as time passes and they are likely to wear out or deteriorate. Replace them every 2 years or every 4000 hours, whichever comes sooner.

Check around the water pump for water leakage. If any abnormality is found, ask your Komatsu distributor for repair or replacement of the parts.

METHOD FOR CHECKING STARTING MOTOR

Ask your Komatsu distributor to have the starting motor checked. If the engine is started frequently, have this inspection performed every 1000 hours.

METHOD FOR REPLACING ACCUMULATOR (FOR CONTROL CIRCUIT)

The accumulator is charged with high-pressure nitrogen gas, so mistaken operation may cause an explosion, which will lead to serious injury or death, or damage. For handling, always observe the following.

METHOD FOR CHECKING FOR LOOSENESS OF ENGINE HIGH-PRESSURE PIPING CLAMP, HARDENING OF RUBBER

METHOD FOR CHANGING OIL IN FINAL DRIVE CASE

• Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn injury. Wait for the temperature to go down, and then start the work.

• If there is remaining pressure inside the case, the oil or plug may jump out. Loosen the plug slowly to release the pressure.

Refill capacity: each of right and left 5.5 l

Prepare a handle, and a container to catch the drained oil.

1. Stop the machine so that the TOP mark comes on the top while a line between TOP mark and plug (P) becomes perpendicular to the ground surface.

2. Place the oil container to catch oil under plug (P).

3. Remove plugs (P) and (F) by using the handle, and drain oil.

METHOD FOR LUBRICATING EQUALIZER BAR SIDE PIN

Steps for Lubricating Equalizer Bar Side Pin

METHOD FOR CHECKING OIL LEVEL IN FINAL DRIVE CASE, ADDING OIL

Steps for Checking Oil Level in Final Drive Case, Adding Oil

METHOD FOR CHECKING BATTERY ELECTROLYTE LEVEL

Steps for Checking Battery Electrolyte Level

METHOD FOR CHECKING ELECTROLYTE LEVEL WHEN IT IS IMPOSSIBLE TO CHECK FROM SIDE OF BATTERY

Warning: This maintenance check requires trained personnel with PPE!

METHOD FOR REPLACING FUEL SPRAY PREVENTION CAP

Ask your Komatsu distributor for replacement of the fuel spray prevention caps.

Maintenance for every 50, 250, 500, 1000, 2000 and 4000 hours service should be performed at the same time.

Fuel spray prevention cap replaced?

Sign off on the bulldozer maintenance