Komatsu Hydraulic Excavator PC290LC-11

Maintenance for every 100, 250 and 500 hours should be performed at the same time.

Contact your Komatsu distributor for cleaning of the KDPF.

Ask your Komatsu distributor for replacement of the KCCV hose.

Ask your Komatsu distributor for cleaning of the DEF tank.

Sign off on the 4500 Hourly Hydraulic Excavator Maintenance

WARNING: Immediately after the engine is stopped, its parts and oil are still very hot, and may cause burn injury. Accordingly, wait until they have cooled down before starting the work.

WARNING: When using compressed air, there is a danger that dirt may scatter and cause personal injury. Always wear protective equipment such as protective eyeglasses and dust mask.

Items to be prepared: Container to receive drained oil

Lower the work equipment to the ground and stop the engine.

Turn the starting switch to ON (B) position.

Set the lock lever to FREE position (F).

Operate each work equipment control lever and attachment control pedal fully to the front, rear, right, and left a few times within 15 seconds to release the internal pressure in the hydraulic circuit.

Set the lock lever to LOCK position (L).

After preparation is completed, replace the additional filter for breaker according to the following procedure.

METHOD FOR CHANGING OIL IN HYDRAULIC TANK

WARNING: Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn injury. Accordingly, wait until they have cooled down before starting the work.

WARNING: When removing the oil filler cap, the oil may spurt out. Rotate it slowly to release the internal pressure, then remove it with care.

NOTICE: If the machine is equipped with a hydraulic breaker, the hydraulic oil deteriorates faster than in the normal bucket digging operation.

Items to be prepared: Container to receive drained oil, Socket wrench handle

Sign off on the hydraulic oil change

METHOD FOR LUBRICATING WORK EQUIPMENT

If any abnormal noise is generated from any greasing point, perform greasing regardless of the greasing interval.

Perform greasing every 10 hours for the first 50 hours operation on a new machine.

After the machine is subjected to digging work in the water, be sure to grease the wet pins.

1. Park the machine on a level and firm ground, lower the work equipment to the ground in the posture shown in the figure, and stop the engine.

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

METHOD FOR CHECKING BATTERY ELECTROLYTE LEVEL

Is the battery electrolyte level above the LOWER LEVEL line?

Is the battery electrolyte level below the UPPER LEVEL line?

METHOD FOR CHECKING ELECTROLYTE LEVEL FROM SIDE OF BATTERY

Is the electrolyte level between UPPER LEVEL (U.L.) and LOWER LEVEL (L.L.) lines?

METHOD FOR CHECKING ELECTROLYTE LEVEL WHEN IT IS IMPOSSIBLE TO CHECK FROM SIDE OF BATTERY

Does the electrolyte reach the sleeve (6)?

METHOD FOR CHECKING ELECTROLYTE LEVEL ON INDICATOR ETC

Is the electrolyte level correct according to the indicator?