K 2500 Truck 4WD V8-379 6.2L DSL VIN J FI (1992)
Fuel Filter: Service and Repair
Fuel Filter Replacement
Fuel Manager/Filter Assembly
REMOVE OR DISCONNECT:
1. Fuel filler cap to release any pressure or vacuum in the fuel tank
2. Element nut turning it by hand in a counterclockwise direction. If unable to turn by hand, a strap wrench (oil filter type) may be used to "break
loose" the element nut.
3. Element by lifting it straight up and out of the header assembly. It is not necessary to drain fuel from the header assembly to change the filter
element since the fuel will remain in the header assembly's cavity.
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Ensure the mating surface between the element assembly and the header assembly is clean before installation.
INSTALL OR CONNECT:
1. New element assembly by aligning the widest key slot located under the element assembly cap with the widest key in the header assembly.
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Push the element in a downwards direction until the mating surfaces make contact.
2. Element nut and tighten securely by hand.
Bleed - air from the fuel manager/filter as follows:
a. Open the air bleed valve on top of the fuel manager/filter assembly.
b. Connect a hose to the air bleed valve located on top of the element assembly and place the other end of the hose into a suitable container.
c. Disconnect the fuel injection pump shut-down solenoid wire.
d. Crank the engine in 10 to 15 second intervals until clear fuel is observed at the air bleed how (wait for one minute between cranking
intervals).
e. Close air bleed valve.
f.
Connect the shut-down solenoid wire and reinstall fuel filler cap.
g. Start the engine and allow to run for five minutes at idle.
h. Check the fuel manager/filter for leaks.
Always replace any damaged or worn O-rings, gaskets, or seals. After replacing components, bleed air from the filter to save cranking time. Start
the engine and check for leaks after replacing components.