C175-16 Generator Set Engine Caterpillar

Engine Oil Pump - Remove and Install

Usage:

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	138-7575	Link Bracket	2

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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. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products. Dispose of all fluids according to local regulations and mandates.

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Illustration 1	g01242428

Remove bolts (2) from cover (1) for the harness assembly. Position cover (1) for the harness assembly out of the way.
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Illustration 2 g01242429
Remove bolts (3). Remove bolt (5). Remove the end section of air inlet manifold (4) and the gaskets.
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Illustration 3 g01242430
Remove hose assembly (6). Remove bolts (7) and disconnect tube assembly (8). Remove bolts (9) and disconnect tube assembly (10).
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Illustration 4 g01242431
Attach a suitable lifting device onto regulator assembly (11). The weight of regulator assembly (11) is approximately 34 kg (75 lb). Remove bolts (12). Remove regulator assembly (11).
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Illustration 5 g01242497
Remove bolts (13) and (14). Remove elbow (15) and the flange assembly.
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Illustration 6 g01242498

Attach Tooling (A) and a suitable lifting device onto engine oil pump (17). The weight of engine oil pump (17) is approximately 50 kg (110 lb). Remove bolts (16). Lower engine oil pump (17) from the engine.

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Illustration 7	g01558135

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Personal injury can result from parts and/or covers under spring pressure.
Spring force will be released when covers are removed.

Be prepared to hold spring loaded covers as the bolts are loosened.

Remove bolts (18) and washers. Remove cover (19) from regulator assembly (11).
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Illustration 8 g01558136
Remove O-ring seals (20).
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Illustration 9 g01287406
Remove spring (24), retainer (23), shims (22), and stem (21) for the maximum pressure relief valve from regulator assembly (11). Remove spring (28), retainer (27), shims (26), and stem (25) for the regulator valve from regulator assembly (11).
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Illustration 10 g01287407

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Illustration 11 g01287417
Remove bolts (29). Remove housing (30). Remove bolts (31). Remove tube (32). Remove O-ring seal (33). Remove O-ring seals (34).

Installation Procedure

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Table 2
Required Tools
Tool	Part Number	Part Description	Qty
A	138-7575	Link Bracket	2

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Illustration 12	g01287417

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Illustration 13	g01287407

Install O-ring seals (34). Install O-ring seal (33). Install tube (32). Install bolts (29). Install housing (30). Install bolts (29).
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Illustration 14 g01287406
Install stem (25), shims (26), retainer (27), and spring (28) for the regulator valve into regulator assembly (11). Install stem (21), shims (22), retainer (23), and spring (24) for the maximum pressure relief valve into regulator assembly (11).
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Illustration 15 g01558136
Install O-ring seals (20).
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Illustration 16 g01558135

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Improper assembly of parts that are spring loaded can cause bodily injury.
To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Install cover (19) onto regulator assembly (11). Install the washers and bolts (18).
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Illustration 17 g01242498
Attach Tooling (A) and a suitable lifting device onto engine oil pump (17). The weight of engine oil pump (17) is approximately 50 kg (110 lb). Position engine oil pump (17) onto the engine. Install bolts (16).
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Illustration 18 g01242497
Install the flange assembly and elbow (15). Install bolts (13) and (14).
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Illustration 19 g01242431
Attach a suitable lifting device onto manifold (11). The weight of manifold (11) is approximately 34 kg (75 lb). Position manifold (11) on the engine oil pump. Install bolts (12).
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Illustration 20 g01242430
Connect tube assembly (10). Install bolts (9). Connect tube assembly (8). Install bolts (7). Install hose assembly (6).
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Illustration 21 g01242429
Install the gaskets and the end section of air inlet manifold (4). Install bolts (3). Install bolt (5).
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Illustration 22 g01242428
Position cover (1) for the harness assembly onto the air inlet manifold. Install bolts (2).