Komatsu Backhoe Loader WB150-2N

Perform the following maintenance after the first 250 hours, together with those to be initiated ìEVERY 250 HOURSî.

For details on the various maintenance operations, See ìMAINTENANCE EVERY 500 HOURS OF OPERATIONî on page 3-41. See ìMAINTENANCE EVERY 1000 HOURSî on page 3-47.

For checks and adjustments, contact your Komatsu Dealer.

Sign off on the maintenance tasks

Note: This maintenance procedure is only for machines in which synthetic biodegradable oil type HEES is used.

The following maintenance operation must be performed after the first 500 hours of operation, together with maintenance operations to be initiated EVERY 500 HOURS.

HYDRAULIC OIL CHANGE AND SUCTION FILTER CLEANING

Was the suction filter cleaned?

For further details on various maintenance operations, See MAINTENANCE EVERY 2000 HOURS OF OPERATION on page 3-51.

Sign off on the initial 500 hours backhoe loader maintenance

CHECKING, CLEANING, OR CHANGING AIR CLEANER CARTRIDGE

Remove the air cleaner only after stopping engine, and do not start engine after the air cleaner is removed.

Always wear safety goggles during cleaning operations.

★ The air filtering system consists of a primary filtering element with considerable capacity and of a secondary cartridge that ensures additional safety protection.

★ The primary element can be cleaned with compressed air, while the cartridge must be replaced.

★ The filter must be cleaned when the clogging warning light (A) positioned on the side dashboard comes on or flashes.

The air cleaner can be reached after raising the loader arm, engaging the mechanical safety lock and opening the engine hood.

To clean the primary element, proceed as follows:

LUBRICATING JOINTS (GREASE FITTINGS)

Clean the grease fittings before attaching the grease pump.

After lubrication, remove all the contaminated grease that may have spread out of the fittings.

If the machine is used in difficult conditions, perform these operations more frequently than usual.

This maintenance operation must be done with front bucket resting on the ground, and backhoe equipment completely extended and resting on the ground, as indicated in the graphic.

Use the prescribed grease pump/grease. (See ìFUEL, COOLANT, AND LUBRICANTSî on page 3-7 and See ìLUBRICATION DIAGRAMSî on page 3-12).

★ As a general rule, it is important to consider that each cylinder is provided with two grease fittings positioned on the couplings and that each pin serving as fulcrum point for movement is provided with at least one grease fitting.

Steps to adjust fan belt tension

Steps to clean the outside of the radiator

CHECKING BATTERY ELECTROLYTE LEVEL

Steps to check battery electrolyte level

Steps to check front axle oil levels