Komatsu Wheel Loader WA900-3

Be sure to put a warning tag on work equipment control levers 1.

Maintenance for every 50, 100, 250 and 500 hours should be carried out at the same time.

24.8.1 CHANGE OIL IN TRANSMISSION CASE, CLEAN STRAINER

Apply the parking brake, and lock the front and rear frames with the safety bar and pin.

Set the work equipment in a stable condition, then stop the engine and apply the locks securely to the work equipment control levers.

The oil is at high temperature immediately after the machine has been operated. Wait for the oil to cool down before carrying out maintenance.

Container to catch drained oil: Min. 140 ¬ capacity

WARNING: Be sure to put a warning tag on work equipment control levers 1. Maintenance for every 50 hours should be carried out at the same time.

WARNING: Apply the parking brake, and lock the front and rear frames with the safety bar and pin. Set the work equipment in a stable condition, then stop the engine and apply the locks securely to the work equipment control levers.

NOTICE: In the extremely hard working conditions, grease the following pins 1 through 6 every 10 hours of operation or daily, whichever way is deemed appropriate.

24.5.2 CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL

WARNING: When the oil filler cap is removed, oil may spurt out, so stop the engine and wait for the oil temperature to go down, then turn the cap slowly to release the internal pressure before removing the cap. If oil has been added to above the H mark, stop the engine and wait for the hydraulic oil to cool down, then drain the excess oil from the drain plug.

Be sure to put a warning tag on work equipment control levers 1.

Maintenance for every 50, 100, 250, 500 and 1000 hours should be carried out at the same time.

24.9.1 CHANGE OIL IN HYDRAULIC TANK, REPLACE HYDRAULIC FILTER ELEMENT

The oil is at high temperature immediately after the machine has been operated. Wait for the oil to cool down before changing the oil. When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it carefully.

Container to catch drained oil: min. 725 ¬ capacity

Refill capacity: 725 ¬ (191.4 US gal)

WARNING: Be sure to put a warning tag on work equipment control levers 1. Maintenance for every 50 hours should be carried out at the same time.

24.6.1 CHECK BATTERY ELECTROLYTE LEVEL

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

Is the electrolyte level at the bottom of the sleeve (UPPER LEVEL line)?

24.6.2 CHECK ALTERNATOR BELT TENSION, ADJUST

Does the belt deflect by about 20 mm (0.79 in) when pressed with the finger (with a force of approx. 58.8N (6 kgf) at a point midway between the drive pulley and alternator pulley?

24.6.3 CHECK FOR LOOSE WHEEL HUB NUTS, TIGHTEN

24.6.4 CLEAN ELEMENT IN AIR CONDITIONER RECIRCULATION FILTER (IF EQUIPPED)

Be sure to put a warning tag on work equipment control levers 1.

Maintenance for every 50, 100, 250, 500, 1000 and 2000 hours should be carried out at the same time.

Check that there is no play in the pulley, oil leakage, water leakage, or clogging of the drain hole. If any abnormality is found, please contact your Komatsu distributor for disassembly and Repair or replacement.

24.10.2 CHECK ENGINE VIBRATION DAMPER

Check decrease of damper fluid, dent or out-of-flat. If there is any abnormality, contact your Komatsu distributor for repair.

24.10.3 CHECK FAN PULLEY AND TENSION PULLEY

Check the pulley to see if there is any leaking grease. If any abnormality is found, ask your Komatsu distributor to repair or replace it.