Fix It

Explore » home» 5 » 7 » a » diesel » how » pump » remove » to » How to Remove a 5 7 Diesel Pump

---

How to Remove a 5 7 Diesel Pump

Oldsmobile manufactured an eight-cylinder engine with a displacement of 5.7 liters from 1978 to 1985. This engine has multi-port fuel injection, which requires an injection pump. This same 5.7-liter diesel engine appears in a variety of vehicles from General Motors during this period, such as the Chevrolet Caprice from 1980 to 1984. The procedure for removing the injection pump is the same for all full-size Chevrolet cars with diesel engines made from 1979 to 1989.

Instructions

1

Remove the negative battery cable with a socket wrench, so that you do not inadvertently start the engine. Disconnect the air cleaner assembly from the valve covers, including the air filter. Detach the air crossover, and cover the intake manifold with screen cover No. J-26996-1.

2

Disconnect the return spring for the throttle rod, and detach the throttle rod from the intake manifold with a socket wrench. Remove the bell crank from the intake manifold. Detach the transmission and throttle cables from the brackets of the intake manifold.

3

Remove the fuel lines from the fuel filter, and disconnect the fuel filter with a socket wrench. Detach the fuel send line from the fuel injection pump. Disconnect the rear brace for the air compressor.

4

Detach the fuel return line from the fuel injection pump. Release the clamps from the fuel return line, and disconnect the fuel return lines from the fuel injector nozzles with a pair of box-end wrenches.

5

Disconnect the three retaining nuts for the fuel injection pump with injector pump wrench No. J-26987, and remove the fuel injection pump from the vehicle. Plug the fuel lines and nozzles with clean cloth to keep debris out of them.