Komatsu Wheel Loader WA900-3E0

CHANGE OIL IN TRANSMISSION CASE, CLEAN STRAINER

Stop the engine and wait for the temperature at all parts to go down.

Set a container to catch the oil under drain plugs (1) and (2), then remove drain plug (1) and loosen plug (2) to drain the oil.

After draining the oil, install drain plugs (1) and (2).

Loosen bolt (3), then remove cover (4) under the brake component box.

Set a container to catch the oil under the transmission filter.

Remove transmission filter drain plugs (5) (6 places), drain the oil, then tighten the plug again.

Remove bolt (6), then remove cover (7) and take out strainer (9) together with spring (8).

Remove any dirt stuck to strainer (9), then wash it in clean diesel oil or flushing oil. If strainer (9) is damaged, replace it with a new part.

LUBRICATING (Applicable for machines with no auto greasing system installed.)

NOTICE: In the extremely hard working conditions, grease the following pins (1) through (6) every 10 hours of operation or daily, whichever way is deemed appropriate. During the initial breaking in for a new machine, carry out lubrication every 10 hours for the first 50 hours of operation.

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

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

Lower the bucket to the ground and set it horizontally.

CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL

WARNING: 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.

Lower the bucket to the ground, stop the engine, and wait for approx. 5 minutes.

When keeping in long-term storage (more than one month), store as follows.

Clean and wash all parts, then store the machine indoors. If the machine has to be stored outdoors, select level ground and cover the machine with a sheet.

Completely fill the fuel tank. This prevents moisture from collecting.

Lubricate and change the oil before storage.

Coat the exposed portion of the hydraulic cylinder piston rod with grease.

Disconnect the negative terminals of the battery and cover it or remove it from the machine and store it separately.

Lock each control lever with the lock lever.

To prevent corrosion, be sure to fill the cooling system with Supercoolant (AF-NAC) or permanent type antifreeze (density between 30% and 68%).

CHANGE OIL IN HYDRAULIC TANK, REPLACE HYDRAULIC FILTER ELEMENT

Set the bucket horizontally on the ground, then turn the parking brake ON.

Stop the engine and wait for the temperature at all parts to go down.

Open the cover on the right side of the operator's compartment.

Remove oil filler (F) and plug (1) from the filter case.

Set a container to catch the oil under drain plug (3).

Open drain valve (2) gradually and drain the oil.

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

WARNING: Do not use the battery if the electrolyte level is below the LOWER LEVEL line. This will accelerate deterioration inside the battery, reduce its service life, and may cause an explosion.

The battery generates flammable gas. 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 plenty of water and consult a doctor.

When adding distilled water, do not allow the electrolyte to go above the UPPER LEVEL line. Excess electrolyte may leak, damage paint, or corrode other parts.

NOTICE: If there is danger of the electrolyte freezing, add distilled water before starting operations the next day.

Electrolyte level is between UPPER LEVEL (U.L.) and LOWER LEVEL (L.L.)?

If the level is below the midpoint of U.L. and L.L., remove cap (1) and add distilled water.

Cap (1) is securely tightened after adding water?

If water exceeds the U.L. line, use a syringe to lower it. Neutralize removed fluid with baking soda (sodium bicarbonate) and flush with water, or consult your Komatsu distributor or battery maker.