1674 DIESEL TRUCK ENGINE Caterpillar


Fuel Injection Pump Housing And Governor

Usage:

Remove Fuel Injection Pump Housing And Governor

1. Turn the crankshaft until No. 1 piston is at top center on the compression stroke. See LOCATING TOP CENTER COMPRESSION POSITION FOR NO. 1 PISTON in TESTING AND ADJUSTING.

2. Disconnect the control linkage for the governor.

3. Disconnect all fuel injection lines (2) from the pump housing. Put caps and plugs in all lines or openings.

4. Disconnect sensing line (1) from fuel ratio control.

5. Disconnect fuel supply line (3) from fuel injection pump housing.

6. Remove the two bolts (5) that hold bracket to the cylinder block.

7. Remove the bolts (4) that hold injection pump housing to accessory drive housing. Remove the fuel injection pump housing and governor. Weight of pump housing and governor is 70 lb. (32 kg).

Install Fuel Injection Pump Housing And Governor

1. Remove plugs and caps from lines and openings. Put the fuel injection pump housing and governor in position on engine, and install the bolts in accessory drive housing (1).

2. Install the two bolts in bracket (2).

3. Connect the fuel injection lines to the pump housing. Tighten the nuts to 30 ± 5 lb.ft. (4.1 ± 0.7 mkg).

4. Connect fuel supply line to pump housing.

5. Connect the sensing line to fuel ratio control.

6. Connect control linkage for the governor.

7. Check the camshaft timing for the fuel injection pumps. See FUEL INJECTION PUMP CAMSHAFT TIMING in TESTING AND ADJUSTING.

Separation Of Governor From Fuel Injection Pump Housing

start by:

a) remove fuel injection pump housing and governor

b) remove fuel ratio control

c) remove fuel shutoff solenoid

1. Remove the idle screw cover, plate, and housing.

2. Remove the screw (2) from rack stop collar.

3. Remove rack stop collar (3), spring, and collar.

4. Remove the bolts (1) that hold the governor to the fuel injection pump housing. Remove the governor housing.

5. Remove the spring and seat assembly from the governor housing.

6. Remove the washer-type spring (5).

7. Remove the three bolts (4) and lock.

8. Remove the cylinder and weight assembly (6).

Connection Of Governor To Fuel Injection Pump Housing

1. Put the cylinder and weight assembly (2) in position on the injection pump housing so the opening in piston (1) is engaged with groove in rack (3). Install the lock and three bolts.

2. Install the washer-type spring (4) so inside diameter of spring will be against the guide in governor housing (5).

3. Install the spring and seat assembly in the governor housing. Put the governor housing (5) in position on pump housing, and install the bolts.

4. Put the spring, collar, and rack stop collar in position, and install the screw in rack stop collar. Install idle screw housing.

end by:

a) install fuel shutoff solenoid

b) install fuel injection pump housing and governor

c) make adjustments to rack and governor as given in TESTING AND ADJUSTING

d) install fuel ratio control

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