C3.3 Industrial Engine Caterpillar

Installation Procedure

1. Clean all of the internal components of the oil pump if the front cover of the oil pump was previously removed in order to inspect the internal components. Check the internal components for wear and for other damage. Check the clearance between the outer rotor of the oil pump and the oil pump body. Check the clearance between the outer rotor and the inner rotor. Check the end play movement of the rotor. Refer to the Systems Operation/Testing and Adjusting Manual, "Engine Oil Pump - Inspect". Replace the engine oil pump if any of the components are worn or damaged.

2. Lubricate the inner rotor and the outer rotor of the engine oil pump with clean engine lubricating oil. Install the front cover of the engine oil pump onto the body of the oil pump. Install the setscrews and tighten the setscrews in order to secure the front cover to the body.
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   Illustration 1	g01019312

3. Fill engine oil pump (6) with clean engine oil.

4. Install the engine oil pump (6) into the assembly of the engine oil pump (4). Install the setscrews (7). Tighten the setscrews to a torque of 9 N·m (80 lb in).

5. Ensure that the dowel pin (8) and the hollow dowel (9) are correctly located in the cylinder block. Install the assembly of the engine oil pump (4) onto the dowels (8 and 9).

6. Install the setscrews (3). Tighten the setscrews to a torque of 44 N·m (32 lb ft).

7. Check the backlash between the idler gear (10) of the oil pump and the crankshaft gear. Refer to the Specifications Manual, "Gear Group - Front" for further information.
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   Illustration 2	g01019045

8. If the pressure relief valve (5) was removed, install the pressure relief valve. Refer to this Disassembly and Assembly Manual, "Engine Oil Relief Valve - Remove and Install" for further information.

9. Position the suction pipe (2) and install the setscrews (1).

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1. Install the engine oil pan. Refer to this Disassembly and Assembly Manual, "Engine Oil Pan - Remove and Install".