Every 4000 Hours Service; Check Water Pump; Check Starting Motor - Komatsu WA500-6H Operation & Maintenance Manual

4.9 Service procedure
Maintenance

Every 4000 hours service

4.9.11 Every 4000 hours service
Maintenance for every 50, 100, 250, 500, 1000 and 2000 hours
service should be carried out at the same time.

Check water pump

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

Check starting motor

The brush may be worn or have no grease on the bearing, so
contact your KOMATSU distributor for inspection or repair.
If the engine is started frequently, carry out inspection every
1000 hours.
Lubricating
CAUTION
If you fail to grease the drive shaft, the shaft will break, and there
is danger that the broken shaft will cause serious damage to the
machine. To avoid this problem always maintain the specified
greasing interval strictly.
1. Using a grease pump, pump in grease through the grease
fittings marked by the arrows.
2. After greasing, wipe off any old grease that was pushed out.
(1) Front drive shaft (4 places)
GK050265
(2) Rear drive shaft (4 places)
GK050266
4-85
WA500-6H – VEAM430100