Komatsu Hydraulic Excavator PC400LC-5

1. Set the work equipment in the greasing posture below, then lower the work equipment to the ground and stop the engine.

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

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

1. Boom cylinder foot pin (2 points)

2. Boom foot pin (2 points);3. Boom cylinder rod end (2 points)

4. Arm cylinder foot pin (1 point)

5. Boom-Arm coupling pin (1point)

6. Arm cylinder rod end (1 point)

Carry out the following maintenance only after the first 250 hours.

CHECK ENGINE VALVE CLEARANCE, ADJUST

For details of the method of replacing or maintaining, see the section on EVERY 500 HOURS and 2000 HOURS SERVICE.;

24.2.1 CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT

Never clean or replace the air cleaner element with the engine running.

When using pressure alr to clean the element wear safety glasses or goggles to protect the eyes.

Open the rear cover of the machine.

If the red piston can be seen in transparent position of dust indicator , clean the air cleaner element.

1. Remove wing nut 2 and take out outer element @. To prevent entry of dirt and dust, cover the air conncctor aide of the rear end of the air cleaner with a clean cloth and adhesive tape.

24.6.1 REPLACE FUEL FILTER CARTRIDGE

Engine is at high temperature immediately after the machine has been operated. Wait for engine to cool down before replacing the filter.

Do not bring fire or sparks near the fuel.

When cranking the engine, confirm the safety around the engine, as the engine may start.

Prepare a filter wrench and a container to catch the fuel.

1. Set the container to catch the fuel under the filter cartridge.

2. Using a filter wrench, turn filter cartridge (1) counterclockwise to remove it.

3. Clean the filter holder, fill a new filter cartridge with clean fuel, coat the packing surface with engine oil, then install it to the filter holder.

CHECK OIL LEVEL IN FINAL DRIVE CASE, ADD OIL

CHECK LEVEL OF BATTERY ELECTROLYTE

Steps to check battery electrolyte level

CHANGE OIL IN ENGINE OIL PAN, REPLACE ENGINE OIL FILTER CARTRIDGE

Steps to change oil and replace filter

REPLACE HYDRAULIC FILTER ELEMENT

Steps to replace hydraulic filter element

LUBRICATE SWING CIRCLE (3 POINTS)