Komatsu Wheel Loader WA380-6

WARNING: After the engine has been operated, all parts are at high temperature, so do not replace the filter immediately. Wait for all parts to cool down before starting the operation.

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.

Do not bring any fire or flame close.

NOTICE: Genuine Komatsu fuel filter cartridges use a special filter that has highly efficient filtering ability. When replacing the filter cartridge, always use a genuine Komatsu part.

The common rail fuel injection system used on this machine consists of more precise parts than the conventional injection pump and nozzle. If any part other than a genuine Komatsu filter cartridge is used, dust or dirt may get in and cause problems with the injection system. Always avoid using substitute parts.

When carrying out inspection or maintenance of the fuel system, pay more attention than normal to the entry of dirt. If dirt is stuck to any part, use fuel to wash it off completely.

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

Set the container to catch the fuel under the filter cartridge.

LUBRICATE REAR AXLE PIVOT PIN (3 places)

1. Using a grease pump, pump in grease through the grease fittings marked by the arrows.

2. After greasing, wipe off any old grease that was pushed out.

CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL

The parts and oil are at high temperature immediately after the engine is stopped, and may cause burns. Wait for the temperature to go down before starting the work.

When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it.

1. Lower the bucket horizontally to the ground and stop the engine. Wait for 5 minutes, then check sight gauge (G). The oil level should be between the H and L marks.

CHANGE OIL IN HYDRAULIC TANK, REPLACE HYDRAULIC FILTER ELEMENT

Lower the bucket horizontally to the ground and apply the parking brake, then stop the engine.

Set a container to catch the oil under drain plug (2).

Loosen drain valve (3), then gradually pull it out to drain the oil.

After draining the oil, close drain valve (3), install and tighten drain plug (2).

Remove mounting bolt (5) of filter cover (4) at the top of the tank, then remove the cover.

Remove spring (6) and bypass valve (7), then take out element (8).

Warning: This maintenance check requires trained personnel with PPE!

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

The battery generates flammable gas and there is danger of explosion, do not bring fire or sparks near the battery.

Battery electrolyte is dangerous. If it gets in your eyes or on your skin, wash it off with a large amount of water and consult a doctor.

When adding distilled water to the battery, do not allow the battery electrolyte to go above the UPPER LEVEL line.

When adding distilled water in cold weather, add it before starting operations in the morning to prevent the electrolyte from freezing.

Inspect the battery electrolyte level at least once a month.

Check battery electrolyte level

Carry out the greasing once every two years, regardless of whether the 4000 hour interval has passed.

1. Using a grease pump, apply grease through the grease fittings marked by arrows.

2. After greasing, wipe off any old grease that was pushed out.

3. When lubricating, stop the drive shaft so that the grease fitting of center drive shaft spline (1) will be as shown in the figure and supply grease from under the machine.

At this time, the grease fitting is at the position indicated by the arrow at the circle below seen from the rear of the machine.

Check the water pump and its relative parts for water leak, and if anything abnormal is found, call on your Komatsu distributor for repairs or replacement.