4.8 Service procedure Maintenance Every 500 hours service Replacement of filter cartridge for poor-quality fuel (If equipped) z Engine is at high temperature immediately after the machine has been operated. Wait for engine to cool down before replacing the filter. z Do not bring fire or sparks near the fuel. z Container to catch the oil z Filter wrench 1. Open the engine side cover on the right side of the chassis. 2. Set the container to catch the fuel under the filter cartridge. 2 3. Using a filter wrench, turn the filter cartridge (1) counter- clockwise to remove it. 4.
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. 1 NOTE If the filter cartridge is tightenend excessively, the packing will be damaged and fuel will leak. If the filter cartridge is too loose, fuel will also leak from the packing, so always tighten to the correct amount. 3 GK015025 5. When installing, screw in cartridge until seal comes in con- tact with sealing surface, then tighten approx. 2/3 turn. 6. Add fuel to the fuel tank until full (to FULL mark on the fuel gauge). 7. Loosen air bleed plug. (2) 8.
Loosen the knob of feed pump (3), then pump it up and down until no more bubbles come out with the fuel from air bleed plug. 9. After bleeding the air, tighten air bleed plug (2), then push in the knob of priming pump (3) and tighten it. Tightening torque for air bleed plug: 7.8 to 11.8 N·m (0.8 to 1.2 kgf·m, 5.8 to 8.7 lbft). 10. After bleeding the air, start the engine and check that there is no fuel leakage on the filter seal surface. Ѓ If there is any leakage, check the tightening of the filter cartridge. If there is still leakage, check the tightening of the filter cartridge.
Ѓ If there is still leakage, follow step 2 and 3 to remove the filter cartridge, then check the packing surface for dam- age or foreign material. Ѓ If any damage or foreign material is found in the packing, replace the cartridge with a new part, then repeat steps 4 to 10 to install the filter cartridge. WA150-5H – VEAM934100 4-53 WARNING WARNING