Komatsu Backhoe Loader WB140-2N

Perform these operations together with those initiated every 50 HOURS and 250 HOURS.

WARNING:Change the oil with machine parked on level ground and raised loader arm with the safety lock engaged.

After machine has been operated, the engine oil is very hot and may cause burns; let the engine cool down until it reaches a temperature of 40-45° C (104-113° F) before draining the oil.

Oil that may be spilled during the change makes the ground slippery, therefore, use anti-slip shoes and immediately remove any trace of oil from the floor.

Oils, filters, coolant, and the battery are considered special waste and must be collected and disposed of according to anti-pollution regulations in force.

When changing engine oil, also change the filter,(See ìCHANGING ENGINE OIL FILTERî on page 3-42).

Warning: Oils, filters, coolant, and the battery are considered special waste and must be collected and disposed of according to all anti-pollution regulations in force.

Perform this operation with the machine positioned on level ground and at operating temperature.

Hydraulic transmission oil changed

Hydraulic transmission filter changed

Warning: After operating machine, the transmission unit becomes very hot and may cause burns. Let the machine cool down before changing the filter.

Oil that may be spilled during replacement of the filter may cause the floor to become slippery: use anti-social shoes and immediately remove any trace of oil from the floor and transmission unit.

Engine valve clearance checked and adjusted

Warning: Perform this check with the machine parked on level ground and loader arm raised with the safety lock engaged.

Lubrication of propeller shafts

Lubrication of front axle joints central coupling

Sign off on the 50 Hourly 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:

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