C 30 1 Ton Pickup 2WD V8-350 5.7L VIN M 4-bbl (1983)
Fuel Tank Switching Valve: Service and Repair
Auxiliary Fuel Selector Valve
WARNING: To reduce the risk of personal injury when disconnecting the fuel hoses and lines, cover the fuel hoses and lines with a shop cloth
to collect the fuel, and then place the cloth into an approved container.
REMOVAL:
The auxiliary fuel tank control valve is located under the right hand side, center of vehicle, attached to the inner side of the frame.
1. Disconnect negative battery cable from vehicle battery.
2. Raise vehicle.
3. Remove hose shield, when required.
4. Remove electrical connector from valve and switch assembly.
5. Remove fuel feed and return hoses. Note position and color markings on hoses.
6. Remove selector valve and meter switch from frame.
INSTALLATION:
1. Install the selector valve and meter switch to the frame.
2. Connect the fuel feed and return hoses, taking care to install hoses in the correct positions.
3. Connect electrical connector to valve and switch assembly.
4. Install hose shield, when required.
5. Lower vehicle.
6. Reconnect negative battery cable to vehicle battery.
7. START vehicle and allow to run while checking for fuel leaks.
