C3.3 Industrial Engine Caterpillar

Engine Oil Pump - Remove and Install

Usage:

C3.3 E3K

Removal Procedure

Start By:

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

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Dispose of all fluids according to local regulations and mandates.

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Illustration 1	g01381984
Typical example

If necessary, remove the suction pipe . Remove bolts (1) and suction pipe (2).
Remove joint (6) (not shown).
Remove bolts (5). Remove the assembly of engine oil pump (3) from the cylinder block.
If necessary, remove pressure relief valve (4) from the housing of engine oil pump (3). Refer to Disassembly and Assembly, "Engine Oil Relief Valve - Remove and Install".
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Illustration 2 g01381985

Typical example
If necessary, remove bolts (10) and front cover assembly (7). Remove outer rotor (8) from the housing of engine oil pump (3).
Note: Do not remove dowels (9) and (11) from the housing of the engine oil pump unless the dowels are damaged.

Installation Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	8T-5096	Dial Indicator Gp	1

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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NOTICE

If any of the parts on the engine oil pump are worn or damaged, the entire pump must be replaced.

Ensure that all components of the engine oil pump are clean and free from wear or 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 of the rotor. Refer to Systems Operation,Testing and Adjusting, "Engine Oil Pump - Inspect". Replace the complete assembly of the engine oil pump if any of the components are worn or damaged.
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Illustration 3 g01381985

Typical example
If necessary, lubricate the internal components of the assembly of the engine oil pump with clean engine oil. Install outer rotor (8) and front cover assembly (7) to the housing of engine oil pump (3). Install bolts (10). Tighten bolts to a torque of 9.5 N·m (84 lb in).
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Illustration 4 g01381984

Typical example
If necessary, install pressure relief valve (4). Refer to Disassembly and Assembly, "Engine Oil Relief Valve - Remove and Install" for further information.
Ensure that dowels (9) and (11) are correctly located in the housing of the engine oil pump (3). 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.
Install bolts (5). Tighten bolts (5) to a torque of 44 N·m (32 lb ft).
If necessary, install the suction pipe. Install suction pipe (2) and a new joint (6) (not shown) to the assembly of the engine oil pump.
Install bolts (1). Tighten bolts (1) to a torque to 22 N·m (16 lb ft).
Use Tooling (A) in order to check the backlash between the idler gear of the oil pump and the crankshaft gear. Refer to Specifications, "Gear Group - Front" for further information.