C27 Petroleum Engine Caterpillar

Assembly Procedure

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Illustration 1	g02352498

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Illustration 2	g01146257

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Illustration 3	g02352555

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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.

1. Use Tooling (A) to install bearings (14) in body (4) until the bearings are 0.30 ± 0.25 mm (0.012 ± 0.010 inch) from the inside edge of the bearing bores. Install bearings (14) so the junctions in the bearings are 30 ± 15 degrees from the center line of the bearing bores, and toward the outlet passage. The outlet passage has a cavity between the bearing bores.

2. Install plunger (9), plunger ring (10), and spring (11).

3. Install retainer (12) and bolts (13).

4. Install shaft assemblies (15) into body (4).

5. Use Tooling (A) to install bearings (16) in cover (17) until the bearings are even with the outside surface of cover. Install bearings (16) so the junctions in the bearings are 30 ± 15 degrees from the center line of the bearing bores and toward the outlet passage in the oil pump.

6. Install cover (17) on body (4). Install bolts (18).
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   Illustration 4	g02352497

7. Install the key into the pump shaft. Install drive gear (3). Install washer (2) and bolt (1). Tighten bolt (1) to a torque of 55 ± 10 N·m (41 ± 7 lb ft).

8. Install shaft assembly (8) on body (4).

9. Use Tooling (A) and a suitable press in order to install the bearing in idler gear assembly (7). Install idler gear assembly (7), thrust plate (6), and bolt (5). Tighten bolt (5) to a torque of 55 ± 10 N·m (41 ± 7 lb ft).

End By:

1. Install the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump - Install".