Komatsu Hydraulic Excavator PC400LC-8

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.

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.

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

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

Set the TOP mark at the top, with the TOP mark and plug (P) perpendicular to the ground surface.

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

Remove plugs (P) and (F) with the handle and drain the oil.

Check the O-rings in the plugs for damage. If necessary, replace with new ones.

Add oil through the hole of plug (F).

When oil begins to overflow from the plug (F) hole, install plug (F).

Warning: This maintenance requires special tools and trained personnel!

This maintenance is only to be performed after the first 1000 hours of operation on new machines.

Has the machine been operated for 1000 hours?

If the machine has not been operated for 1000 hours, stop the procedure.

Check engine valve clearance, is adjustment needed?

If adjustment is needed, contact your Komatsu distributor.

For details of the method of replacing or maintaining, see the section on EVERY 2000 HOURS SERVICE.

Sign off on the initial 1000 hours maintenance

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?

Sign off on the 50 Hourly Hydraulic Excavator Maintenance