Komatsu PC220LC -8 Operation & Maintenance Manual page 336

MAINTENANCE MAINTENANCE
16. Connect drain hose (2).
17. In case air intake plug (5) has been loosened to drain fuel,
tighten it now.
Tightening torque: 8.0 - 12.0 Nm (0.8 - 1.2 kgm, 5.8 - 8.7 lbft)
18. Turn fuel valve (3) to the "OPEN" position (O).
19. Close the inspection cover.
20. When the whole work is finished, bleed air from the water separator the same way as when replacing the fuel
filter cartridge.
For details on bleeding the air, see "REPLACE FUEL PRE-FILTER CARTRIDGE (PAGE 4-57)", "REPLACE
FUEL MAIN FILTER CARTRIDGE (PAGE 4-70)".
MAINTENANCE PROCEDURE MAINTENANCE PROCEDURE
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