Diesel Filter Replacement - Service and Repair | 1983 C 20 3/4 Ton Pickup
Fuel Filter: Service and Repair
Secondary Diesel Filter Replacement
Secondary Fuel Filter
REMOVAL
1. Remove air cleaner.
2. Remove fuel filter lines from adapter.
3. Remove fuel filter adapter.
4. Remove fuel filter.
INSTALLATION
1. Install filter to adapter, tighten 2/3 turn after contacting gasket.
2. Install adapter to intake manifold.
3. Install the fuel filter inlet line only.
NOTE: Anytime the secondary fuel filter is removed or replaced, air must be purged from the filter to prevent engine stalling or excessive cranking time
to restart.
4. With the secondary fuel line disconnected, disconnect the pink electrical wire from the fuel injection pump to prevent the engine from starting.
5. Place a towel under the filter outlet.
6. Crank the engine (for 10 seconds maximum) until fuel is observed at the outlet port.
7. If fuel is not observed after 10 seconds, wait 15 seconds, repeat step 6.
8. When fuel is observed after 10 seconds, install the outlet line.
9. Reconnect pink wire at injection pump and reinstall air cleaner.
10. Start engine and allow to idle for several minutes to purge remaining air.
11. Check all fittings and filter for leakage, remove towel.
12. Install air cleaner.
