Komatsu Hydraulic Excavator PC290LC-11

Remove any excessive dirt (e.g. from undercarriage) and excessive grease (e.g. around area of articulating joint/pins) from areas of the machine to be checked.

Check structures for cracks. If any cracks are found contact your Komatsu distributor.

METHOD FOR REPLACING HYDRAULIC OIL FILTER ELEMENT

Steps to replace hydraulic oil filter element

METHOD FOR CHANGE OIL IN SWING MACHINERY CASE

Steps to change oil in swing machinery case

METHOD FOR CHECKING AND ADDING OIL IN DAMPER CASE

Steps to check and add oil in damper case

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 CHANGING OIL IN FINAL DRIVE CASE

Steps for changing oil in final drive case

METHOD FOR CLEANING HYDRAULIC TANK STRAINER

Steps for cleaning hydraulic tank strainer

METHOD FOR CHECKING AND RELEASING NITROGEN GAS CHARGE PRESSURE IN ACCUMULATOR (FOR CONTROL CIRCUIT)

Steps for checking and releasing nitrogen gas charge pressure in accumulator

Note down the alternator check results

METHOD FOR CHECKING AND ADJUSTING ENGINE VALVE CLEARANCE

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?

Warning: This procedure involves handling high-pressure nitrogen gas. Improper operation may cause an explosion, leading to serious injury or death.

Non-Amine Engine Coolant (AF-NAC) Replacement

Cleaned the inside of the cooling system?

Method for Replacing Accumulator (For Control Circuit)

Removed the hydraulic equipment safely?

Disposed of the accumulator safely?