326F, 329F and 330F Excavators C7.1 Engine Supplement Caterpillar

Removal Procedure

Start By:

1. Remove the engine oil pan.

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Illustration 1	g01982373

1. If suction pipe (1) has a support bracket, remove bolt (4) from bracket (3). Loosen bolt (2) for the retaining clip.

   Note: Note the position and orientation of the components for the support bracket.

2. Remove bolts (5). Remove suction pipe (1) from engine oil pump (9).

3. Remove gasket (6) (not shown).

4. Remove bolts (7) and remove the assembly of engine oil pump (9) from the cylinder block.

5. If necessary, remove pressure relief valve (8) from the housing of engine oil pump (9). Refer to Disassembly and Assembly, "Engine Oil Relief Valve - Remove and Install".
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   Illustration 2	g01982374

6. If necessary, remove bolts (14) and front cover assembly (10). Remove outer rotor (11) from the housing of the engine oil pump.

   Note: Do not remove dowel (12) or dowel (13) from the housing of the engine oil pump unless the dowels are damaged.

Installation Procedure

1. Ensure that all components of the engine oil pump are clean and free from wear and damage. Refer to System Operation, Testing and Adjusting, "Engine Oil Pump - Inspect" for more information. Replace the complete assembly of the engine oil pump if any of the components are worn or damaged.
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   Illustration 3	g01982373

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   Illustration 4	g01982374

2. If necessary, install pressure relief valve (8). Refer to Disassembly and Assembly, "Engine Oil Relief Valve - Remove and Install" for further information.

3. If necessary, lubricate the internal components for the assembly of the engine oil pump with clean engine oil. Install outer rotor (11) and front cover (10) to the housing of engine oil pump (9). Install bolts (14). Tighten bolts (14) to a torque of 22 N·m (195 lb in).

4. Ensure that two dowel (12) and dowel (13) are correctly located in the housing of engine oil pump (9). Position the assembly of the engine oil pump onto the cylinder block.

   Note: Ensure that the dowels in the housing of the engine oil pump are aligned with the holes in the cylinder block.

5. Install bolts (7). Tighten bolts (7) to a torque of 22 N·m (195 lb in).

6. Check the backlash between idler gear and the crankshaft gear. Refer to Specifications, "Gear Group (Front)" for further information.

7. Install suction pipe (1) and a new gasket (6) (not shown) to the assembly of engine oil pump (9).

8. Install bolts (5). Tighten bolts (5) to a torque to 22 N·m (195 lb in).

9. If suction pipe (1) has a support bracket, follow Step 9.a through Step 9.d.

   1. Install the components of support bracket (3). Ensure the correct location and orientation of the bracket and the retaining clip.

   2. Install bolt (4).

   3. Tighten bolt (4) and bolt (2) finger tight in order to align the components of the support bracket.

   4. Tighten bolt (2) to a torque of 22 N·m (195 lb in).

      Tighten bolt (4) to a torque of 44 N·m (32 lb ft).

End By:

1. Install the engine oil pan.