Here is an illustration show you steps on how to remove and install fule filter for ISUZU 4LE2 Tier-4 engine.
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Procedures:
Fuel Filter Removal
1 Disconnect the harness connector from the fuel sedimenter switch.
2 Remove the fuel feed hose from the fuel filter.
Caution: To prevent fuel outflow, be sure to plug the disconnected hose.
3 Remove the fuel return hose from the fuel filter.
Caution:To prevent fuel outflow, be sure to plug the disconnected hose.
4 Remove the fuel filter from the engine.
Fuel Filter Installation
1 Install the fuel filter to the engine.
2 Install the fuel return hose to the fuel filter.
3 Install the fuel feed hose to the fuel filter.
4 Connect the harness connector to the fuel sedimenter switch.
2 Fuel Filter Air Bleed
1 Loosen the plug using a wrench.
2 Operate the priming pump.
Note: Press the priming pump until it becomes hard.
3 Tighten the plug using a wrench.
tightening torque： 10 N・m { 1.0 kgf・m / 89 lb・in }
4 Operate the priming pump.
Note:Operate until the opening sound of the overflow valve is heard.
More repair cases for ISUZU engine,please refer to:ISUZU Engine Trouble Repair