Komatsu — TRANSPORTATION

24. SERVICE PROCEDURE 24.7 EVERY 500 HOURS SERVICE Maintenance for every 50, 100 and 250 hours should be carried out at the same time. 24.7.1 REPLACE FUEL FILTER CARTRIDGE AND ADDI- TIONAL FUEL FILTER CARTRIDGE (MACHINES EQUIPPED WITH ADDITIONAL FUEL FILTER) Prepare a filter wrench and a container to catch the fuel. 1. Set the container to catch the fuel under the filter cartridge. 2. Using a filter wrench, turn filter cartridge counterclockwise to re- move it. If an additional filter is installed, turn additional filter cartridge to the left. 3.

Clean the filter holder, fill a new filter cartridge with clean fuel, coat the packing surface with engine oil, then install it to the filter holder. 4. When installing, tighten until the packing surface contacts the seal surface of the filter holder, then tighten it up 1/2 of a turn. 5. If equipped with additional fuel filter, clean the additional fuel filter holder, fill a new filter cartridge with clean fuel, coat the packing surface with engine oil, then install it to the filter holder. 6. When installing, tighten until the packing surface contacts the seal surface of the filter holder, then tighten it up 2/3 of a turn.

If the filter cartridge is tightened too far, the packing will be damaged and this will lead to leakage of fuel. If the filter cartridge is too loose, fuel will also leak from the packing, so always tighten to the correct amount. 7. After replacing the fuel filter cartridge, bleed the air. Bleed the air according to the following procedures. PC130/150LGP-6K ENG 3-54 WARNING • Engine is at high temperature immediately after the machine has been operated. Wait for engine to cool down before replac- ing the filter. • Do not bring fire or sparks near the fuel. WARNING