Komatsu Wheel Loader WA480-8

Warning: Immediately after the engine is stopped, the parts are still very hot. Do not replace the filter immediately. Wait until all of parts cool down before starting the work.

Warning: High pressure is generated inside the engine fuel piping system when the engine is running. When replacing the filter, wait for at least 30 seconds after stopping the engine to let the internal pressure go down before replacing the filter.

Notice: Komatsu genuine fuel filter cartridges use a special filter that has highly efficient filtering ability. When replacing parts, Komatsu recommends using Komatsu genuine parts.

Notice: The common rail fuel injection system used on this machine consists of more precise parts than those in the conventional injection pump and nozzles. If any cartridge other than a Komatsu genuine filter cartridge is used, dust or dirt may get in and cause problems with the injection system. Never use a substitute.

Notice: When performing inspection and maintenance of the fuel system, be careful not to let any dirt or dust get in, more than ever before. If dust sticks to the fuel system, wash it off thoroughly with fuel.

Items to be prepared: Container to catch drained oil, Filter wrench

Open the engine side cover on the right side of the machine.

Place a container under the filter cartridge to catch the fuel.

Turn filter cartridge (1) counterclockwise by using the filter wrench, and remove it.

METHOD FOR CHECKING OIL LEVEL IN HYDRAULIC TANK, ADDING OIL

• 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.

• When removing the oil filler cap, the oil may spout out. Turn it slowly to release the internal pressure, then remove it carefully.

If the oil is added to above H mark, stop the engine and wait for the hydraulic oil to cool down. Then drain excessive oil through the drain plug. It may damage the oil circuit and cause the oil to spurt out.

Lower the bucket to the ground and stop the engine. Wait for 5 minutes before checking oil level. Oil level should be between H and L marks on sight gauge (G).

1. Check with sight gauge (G).

2. Loosen the bolt, turn cover (1), and open it.

METHOD FOR CHANGING OIL IN HYDRAULIC TANK, CLEANING HYDRAULIC TANK STRAINER

• 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.

• When removing the oil filler cap, the oil may spout out. Turn it slowly to release the internal pressure, then remove it carefully.

1. Lower the bucket to the ground with its bottom level, apply the parking brake, then stop the engine.

2. Remove inspection window (1) of the undercover.

3. Loosen the bolts and remove cover (2).

4. Remove the cap of oil filler port (F).

Warning: This maintenance check requires trained personnel with PPE!

Do not use the battery if the battery electrolyte level is below LOWER LEVEL line.

Do not add the electrolyte to the battery exceeding UPPER LEVEL line.

Battery electrolyte level is between UPPER LEVEL (U.L.) line and LOWER LEVEL (L.L.) line.

Machine is stopped and held at the current position when parking brake is set.

Air conditioner compressor belt tension is normal.

Air conditioner recirc air filter is clean.

Brake oil pressure caution lamp does not light up when the brake pedal is depressed 6 times.

Replace defined life parts every 2 years or every 4000 hours

Lubricate drive shaft with special grease every 4000 hours or every 2 years

Part No. of special grease for the drive shaft

Remove inspection windows (1) and (2) of the undercover

Pump in grease through the grease fittings

Wipe off any old grease that is pushed out

Install inspection windows (1) and (2) of the undercover

Check for leakage of water and oil around the water pump

Have the starting motor checked