B350 1 Ton Van V8-5.9L VIN Z (1992)
Fuel Return Line: Service and Repair
Fuel Fittings
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRESSURE (EVEN WITH THE ENGINE OFF). BEFORE SERVICING THE
FUEL FITTINGS, THE FUEL SYSTEM PRESSURE MUST BE RELEASED.
REMOVAL
1.
Remove air cleaner assembly.
2.
Perform Fuel System Pressure Release.
3.
Disconnect negative battery cable at battery.
4.
Loosen fuel intake and return hose clamps. Wrap a shop towel around each hose. Twist and pull each hose for removal.
Servicing Fuel Fittings
5.
Remove each fitting and note inlet diameter. Remove copper washers.
INSTALLATION
1.
Replace copper washers with new washers.
2.
Install fuel fittings in proper ports. Tighten to 20 Nm (175 in. lbs.) torque.
3.
Using new original equipment type hose clamps, install fuel return and supply hoses. Tighten hose clamps to 1 Nm (10 in. lbs.) torque.
4.
Connect battery cable to battery.
5.
Using DRB II diagnostic tester, with the key in the Run position, use Special Functions ASD Fuel System Test. This is done to activate the fuel
pump and pressurize the system. Check for leaks.
6.
Install air cleaner assembly.
