C6.6 Engines for Caterpillar Built Machines Fuel Injection Pump Gear - Install Caterpillar

Installation Procedure

Note: The fuel injection pump must remain locked until the procedure instructs you to unlock the fuel injection pump.

1. Ensure that number one piston is at top dead center on the compression stroke. Refer to System Operation, Testing and Adjusting, "Finding Top Center for No. 1 Piston" for the correct procedure.
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   Illustration 1	g01335380

2. Ensure that Tooling (C) is installed in Hole (Y) in the cylinder block. Use Tooling (C) to lock the crankshaft in the correct position.
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   Illustration 2	g01335394

3. Ensure that Tooling (B) is installed into Hole (X) in camshaft gear (1).

4. Ensure that shaft (9) of the fuel injection pump is clean and free from damage.

5. Ensure that the fuel injection pump is locked in the correct position. Refer to Disassembly and Assembly, "Fuel Injection Pump - Install" for the correct procedure.

6. Ensure that the fuel pump gear is clean and free from wear of damage. If necessary, replace the fuel pump gear.
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   Illustration 3	g01335384
   Alignment of timing marks

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   Illustration 4	g01335395
   Typical example

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   Illustration 5	g01335382
   Typical example

7. Follow Step 7.a through Step 7.f to install injection pump gear (3) to the fuel injection pump.

   1. Ensure that the tapers on fuel injection pump shaft (9) and the fuel injection pump gear (3) are clean and dry.

   2. Install fuel pump gear (3) to shaft (9) of fuel injection pump (5). Ensure that the timing marks on gear (2) and gear (3) are in alignment and that the mesh of the gears is correct.

   3. Install a new spring washer (10) and install nut (8) to shaft (9) of the fuel injection pump. Apply sufficient pressure to fuel injection pump gear (3) in a counterclockwise direction to remove the backlash.

   4. Tighten nut (8) to a torque of 25 N·m (221 lb in).

   5. Unlock the fuel injection pump (5). To unlock fuel injection pump (5), loosen the locking bolt (6) in the fuel injection pump. Slide spacer (7) into Position (Z1). Tighten locking bolt (6) against the spacer to a torque of 9 N·m (80 lb in). Locking the locking bolt against the spacer will prevent the locking bolt from contacting the shaft of the fuel injection pump.

   6. Tighten nut (8) to a torque of 90 N·m (66 lb ft).

8. Remove Tooling (B) and Tooling (C). Install plug (4) into Hole (Y) in the cylinder block. Refer to Illustration 1.
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   Illustration 6	g01335426
   Typical example

9. Ensure the backlash for gear (1), gear (2), and gear (3) are within specified values. Refer to the Specifications, "Gear Group (Front)" for further information.

10. Lubricate the teeth of gear (1), gear (2), and gear (3) with clean engine oil.

End By:

1. Install the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove and Install" for the correct procedure.