Komatsu WA500-6H Operation & Maintenance Manual page 320

4.9 Service procedure
Every 500 hours service
1. Close the fuel valve.
2. Remove transparent cup (2) from the filter and inspect it. If it
is broken or damaged, replace it with a new part.
3. Set the container to catch the fuel under the filter cartridge
(1).
4. Using a filter wrench, turn filter cartridge (1) counterclock-
wise to remove it.
5. Clean transparent cup (2) and remove seal (3). Coat the
new seal with clean fuel or oil.
6. Install transparent cup (2) to the new filter cartridge.
Tightening torque for cup:
10 N·m (1.0 kgf·m, 7.2 lbft)
7. Clean the filter holder.
8. Check that cap (B) is installed to the new filter cartridge, then
fill with clean fuel.
NOTE
When filling with fuel, always use fresh fuel and be careful not to
let any dirt or dust get in. Fill with fuel through 8 small holes (A)
(dirty side). Cap (B) is to prevent oil containing dirt from getting
into the clean side. Always add the oil with cap (B) installed.
When replacing the filter cartridge, check that drain plug (4)
at the bottom of transparent cup (2) is securely tightened.
Tightening torque:
0.2-0.4 N·m (0.02 - 0.046 kgf·m, 0.1 - 0.3 lbft
9. Coat the packing surface of the filter cartridge with oil.
10. Remove filter cartridge cap (B) and install to the filter holder.
4-66
1
1
3
2
4
A
WA500-6H – VEAM430100
Maintenance
GK050236
GK050238
B
GK050239