Komatsu Hydraulic Excavator PC400-8

NOTICE: If any abnormal noise is generated from any greasing point, carry out greasing regardless of the greasing interval. Carry out greasing every 10 hours for the first 50 hours on a new machine. After the machine was subjected to jobs in the water, be sure to grease the wet pins.

Set the machine to the greasing posture

Using a grease pump, pump in grease through the grease fittings

After greasing, was old grease wiped off?

CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT

When using compressed air, there is danger of dirt flying and causing personal injury.

Always wear protective glasses, dust mask, or other protective equipment.

When removing the outer element from the air cleaner body, it is dangerous to pull it out by force. When working in high places or where the foothold is poor, be careful not to fall because of the reaction when pulling out the outer element.

Do not clean the air cleaner element until the air cleaner clogging monitor on the monitor panel light up. If the element is cleaned frequently before the air cleaner clogging monitor light up, the air cleaner will not be able to display its performance fully, and the cleaning efficiency will also go down.

In addition, during the cleaning operation, more dirt stuck to the element will fall inside the inner element.

If inspection, cleaning, or maintenance is carried out with the engine running, dirt will enter the engine and cause damage to the engine. Always stop the engine before carrying out these operations.

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.

NOTICE: If the machine is equipped with a hydraulic breaker, the hydraulic oil will deteriorate much faster than during normal bucket operations.

Refill capacity: 248 liters (65.52 US gal)

Prepare a handle (for the socket wrench).

Swing the upper structure so that hydraulic tank drain plug (P) and drain plug (A) at the bottom of the pump suction tube are in the middle between the left and right tracks.

Retract the arm and bucket cylinders, then lower the boom and put the teeth in contact with the ground.

Set the lock lever to the LOCK position and stop the engine.

Remove the cap of oil filler port (F) at the top of the hydraulic tank.

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. Be careful when opening the air bleed plug in the fuel filter head. It is still under pressure, so fuel may spurt out.

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.

Prepare a container to catch drain fuel. Prepare a filter wrench

Turn the valve (1) at the bottom of the fuel tank to the CLOSE position (S).

1. Lower the work equipment to the ground.

2. Using a grease pump, pump in grease through the grease fittings shown by arrows. (2 places)

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

CHECK LEVEL OF BATTERY ELECTROLYTE

Carry out this procedure before operating the machine.

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

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