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Home >> GMC >> 1983 >> Forward Control 7.4 W, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Diesel >> Removal & Installation >> Injection Pump >> Removal (Pickup)
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Removal (Pickup)

  1. Disconnect negative battery cables. Remove fan, shroud, air cleaner and intake manifold. Install screens in cylinder heads. Remove fuel injection lines as previously described.
  2. Disconnect throttle cable, return springs and detent cable (if equipped). Disconnect wires, fuel return line, fuel supply line and fuel injection lines at pump. Cap all fuel lines.
  3. Remove oil filler tube and PCV vent hose assembly. Remove A/C hose retainer bracket, if equipped. Remove grommet. Scribe or paint an alignment mark on front cover and injection pump.
  4. Rotate engine to remove injection pump retaining bolts that are accessible through oil filler neck hole. Remove injection pump-to-front cover bolts. Remove injection pump and gasket.
Fig 1: Injection Pump Timing Mark Locations Cylinder No. 1 must be set at TDC.
G8739