C 3500 Truck 2WD V8-454 7.4L (1990)
Throttle Body: Service and Repair
Fuel Meter Cover Assembly
Fuel Meter Cover (TBI)
NOTE: The fuel meter cover assembly contains the fuel pressure regulator assembly. The regulator has been adjusted at the factory and should only be
serviced as a complete assembly.
WARNING: DO NOT remove the four screws securing the pressure regulator to the fuel meter cover. The fuel pressure regulator includes a
large spring under heavy compression which, if accidently released, could cause personal injury. Disassembly might also be result in a fuel leak
between the diaphragm and the regulator container.
REMOVAL:
1.
Disconnect electrical connectors to fuel injectors. (Squeeze plastic tabs and pull straight up).
2.
Remove long and short meter cover screw assemblies.
3.
Remove fuel meter cover assembly.
NOTE: DO NOT immerse the fuel meter cover (with pressure regulator) in cleaner, as damage to the regulator and gasket could occur.
4.
Remove fuel meter outlet gasket and pressure regulator seal. Discard old gaskets and seal.
INSPECTION:
^
Inspect for dirt, foreign material and casting warpage.
INSTALLATION:
1.
Install a new pressure regulator seal, fuel meter outlet passage gasket, and cover gasket.
2.
Install fuel meter cover assembly.
3.
Install attaching screw assemblies, precoated with appropriate locking compound to threads. (Short screws are next to injectors.) Tighten screw
assemblies to 3.0 Nm (28.0 lb-in).
4.
Reconnect electrical connectors to fuel injectors.
5.
With engine OFF, and ignition ON, check for leaks around gaskets and fuel line couplings.
