SUPPLEMENT FOR 768C TRACTOR & 769C TRUCK & 771C QUARRY TRUCK Caterpillar


Governor

Usage:

Remove Governor

Start By:

a. remove fuel ratio control

b. remove governor shutoff solenoid

1. Remove the cotter pin and pin (1) that connects the linkage to the lever.

2. Remove the bolt, and disconnect clip (3) that holds the fuel line to governor base.

3. Disconnect wire assembly (4) from the governor plate.

4. Remove the bolts and plate (2) from the governor.

5. Remove bolt (8), stop collar (7) and the spring from the governor.

NOTE: Plate (6) can be removed for easier access to bolt (8). Remove the bolt, cover (5) and bolt (9).

6. Install tool (A) in the fuel injection pump housing. Move governor control lever (10) until tool (A) is in place and the racks are in the center (zero) position.

7. Remove bolts (11) and governor housing (12).

8. Remove the seat, one flat washer, two spring washers and spring (13).

9. Disconnect fuel lines (15) from governor plate (14).

10. Remove the bolts and governor plate (14) from the fuel injection pump.

NOTE: It is possible to remove the governor and governor plate as a unit. The above steps must be followed before the governor can be installed again on the injection pump housing.

Install Governor

1. Install a new gasket on the injection pump housing.

2. Make sure tool (A) holds the racks in the center (zero) position.

3. Put governor plate (1) in position on the fuel pump housing. Make sure the dowels in governor plate (1) are in alignment with the holes in the injection pump housing. Install the bolts.

4. Install ring (2) in gear assembly (3). Make sure the dowels in gear assembly (3) are in the center of the slots in ring (2).

5. Install drive assembly (4), the spring and ring (6) in gear assembly (5) as shown. Be sure the dowels in gear assembly (3) and the holes in drive assembly (4) are in alignment.

6. Use tool (B) to install ring (5) in the gear assembly.

7. Install spring (9), the spring washer, the flat washer, the spring washer and seat (7).

8. Connect fuel lines (8) and wire assembly (10) to the governor plate.

9. Install a new gasket (13) and governor housing (11) on the governor plate with bolts (12).

10. Remove tool (A), and install the plug.

11. Install the spring, stop collar (14) on the governor bolt with bolt (15).

12. Install a new gasket and cover assembly (16) on the governor housing.

NOTE: There is a strainer assembly in the cover assembly. The strainer assembly is installed with the mesh (screen) toward the governor housing.

13. Install new gaskets and plate assembly (17) and cover (19) on the governor housing.

14. Connect linkage (18) on the governor lever with the pin and the cotter pin.

15. Check the governor adjustment. See Governor Adjustment in Testing And Adjusting.

End By:

a. install fuel ratio control

b. install governor shutoff solenoid

Caterpillar Information System:

SUPPLEMENT FOR 768C TRACTOR & 769C TRUCK & 771C QUARRY TRUCK Fuel Injection Pump Housing And Governor
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SUPPLEMENT FOR 768C TRACTOR & 769C TRUCK & 771C QUARRY TRUCK Timing Gear Cover
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