Komatsu Hydraulic Excavator PC450LC-8

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.

Refill capacity: each 10.5 liters (2.77 US gal)

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

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

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.

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: This maintenance requires special tools and should be performed by trained personnel only!

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

Enter the machine's hour meter reading

Engine valve clearance checked?

Engine valve clearance adjusted?

Report any issues found during the check

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

Sign off on the 1000 hours maintenance

Warning: This maintenance check requires trained personnel with PPE!

Check water pump for play in pulley, oil leaks, and water leaks

If any issues are found with the water pump, contact your Komatsu distributor for inspection, overhaul or replacement

If the engine is started frequently, have this inspection carried out every 1000 hours

Replace accumulator (for control circuit) every 2 years or every 4000 hours, whichever comes sooner

Warning: The accumulator is charged with high-pressure nitrogen gas, so mistaken operation may cause an explosion, which will lead to serious injury or damage

When handling the accumulator, always do as follows:

Accumulator handling precautions