G3408C and G3412C Engines Caterpillar

Installation Procedure

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Illustration 1	g01422110

1. Apply a light coat of clean engine oil or glycerin to O-ring seal (18) .

2. Use Tooling (B) to position governor drive (16) in the original location through the opening in front housing (17) . The weight of governor drive (16) is approximately 32 kg (70 lb).

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Illustration 2	g00783313

3. Install four bolts (13) . Evenly tighten the bolts until governor drive (16) is seated against the front housing.

4. Install four bolts (15) .

5. Connect tube assembly (14) .

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Illustration 3	g00783301

6. Position mounting bracket (11) and install bolts (10) and the washers. Install bolts (12) and the washers.

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Illustration 4	g00783295

Note: The flywheel is positioned Top Center compression stroke after the governor is installed.

Note: Install timing ring (9) with the timing hole straight up.

7. Install fuel pump drive gear (7) , ring retainer (6) (not shown) and timing ring (9) .

8. Install bolts (8) . Tighten bolts (8 ) finger tight. The threaded hole of the timing ring should be at the 12 o'clock position. The threads will be facing forward.

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Illustration 5	g00783287

9. Install a new gasket between ring cover (5) and the front housing.

10. Install ring cover (5) and secure ten bolts (2) .

11. Apply Tooling (C) to the threads of nut (3) and tighten to a torque of 27 ± 4 N·m (20 ± 3 lb ft).

12. Install nut (4) (not shown) and tighten to a torque of 27 ± 4 N·m (20 ± 3 lb ft).

13. Slide a location pin into the hole of the ring cover (5) . Screw the bolt into timing ring (9) in order to pin the ring.

14. Remove the cover for the access hole from cover (5) .

15. Adjust the position of timing ring (9) by using the access hole. Tighten bolts (8) to a torque of 135 ± 5 N·m (100 ± 4 lb ft) through the access hole. Remove the location pin and replace the pin with the plug. Remove the pin and replace the pin with the plug.

16. Install the cover for the access hole.

17. Connect harness assembly (1) .

Note: For more detailed information regarding the governor drive, refer to Specifications Manual, "Governor Drive".

End By:

1. Install the governor. Refer to Disassembly and Assembly, "Governor - Install".
2. Install the electronic control module. Refer to Disassembly and Assembly, "Electronic Control Module - Remove and Install".