Komatsu Hydraulic Excavator PC450-8

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.

Contact your Komatsu distributor for the following steps

High-pressure piping clamp replaced

Fuel spray prevention cap replaced

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

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: 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.