Komatsu WA500-6H, Operation & Maintenance Manual, Page: 295 / 412

4.9 Service procedure
Maintenance When required
WA500-6H – VEAM430100
4-41
1. Stop the machine on horizontal ground and turn the parking
brake switch ON.
2. Stop the engine.
3. Remove bolt (1) and open radiator grill (2).
4. Remove bolts (3), then swing the fan towards the grill.
5. Use compressed air to blow off the mud, dirt, or leaves clog-
ging radiator fins.
NOTE
z
If the steam jet nozzle is brought too close the radiator fins, it
may damage the fins, so keep the nozzle a suitable distance
away from the fins when cleaning.
z The guideline for the spray pressure is 9.8 MPa {100 kgf/
cm², 1420 PSI}. With a nozzle diameter of 2 mm (0.1 in),
keep at least 100 mm (3.9 in) away.
REMARK
Steam or water can be used instead of compressed air.
6. Open cleaning cover (4) and blow out the dust from the front
and rear.
7. Check the rubber hose. Replace with a new one if the hose
is found to have cracks or to be hardened by aging.
Also, check hose clamps for looseness.
8. After blowing out the dirt, close cleaning cover (4).
9. Close the fan and tighten bolts (3).
10. Close radiator grill (2), then tighten bolts (1).
NOTE
If the steam jet nozzle is brought too close to the radiator fins, it
may damage the fins, so keep the nozzle a suitable distance
away from the fins when cleaning.
GK050188
4
1
2
GK050204
3