Komatsu Hydraulic Excavator PC450-8

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

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.

When carrying out heavy-duty operations, such as hydraulic breaker operations, carry out the greasing every 100 hours.

Set the machine to the greasing posture shown on the right, lower the work equipment to the ground, then stop the engine.

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

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

REPLACE FUEL PRE-FILTER CARTRIDGE WARNING

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.

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.

Prepare a container to catch drain fuel.

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

Set the container to catch the fuel under the filter cartridge (2).

Using a filter wrench, turn filter cartridge (2) counterclockwise to remove it.

Clean the filter holder, coat the packing surface of the new filter cartridge thinly with oil, then install the filter cartridge to the filter holder.

Contact your Komatsu distributor for the following steps

High-pressure piping clamp replaced

Fuel spray prevention cap replaced

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.