C32 Marine Engines Caterpillar

Assembly Procedure

Show/hide table



Illustration 1	g03771583
Cutaway view of bearing housing to show lip seal orientation.

1. Lubricate outer diameter of lip seal (20) with Tooling (D). Using Tooling (C), install lip seal (20) into bearing housing (13) seal face down.

Show/hide table



Illustration 2	g03771662

Note: The inner race of the lower bearing will be installed onto the shaft separate from the outer race and roller assembly. Only the outer race and roller assembly is to be installed into the bearing housing.

2. Using Tooling (C) and a suitable press, install outer bearing race and roller assembly (19) into the bearing housing.

Show/hide table



Illustration 3	g03771898

3. Raise the temperature of inner lower bearing race (16). Slide inner lower bearing race (16) onto shaft (15) until inner lower bearing race (16) comes to rest against the shoulder of shaft (15) .

Show/hide table



Illustration 4	g03772316

4. Install bearing (14) onto shaft (15). Install retaining ring (11) .

Show/hide table



Illustration 5	g03772477

5. Using a suitable press, install shaft and bearing assembly (12) into bearing housing (13) .

Show/hide table



Illustration 6	g03772478

6. Install retaining ring (10) in the orientation as shown in Illustration 6 to ensure that the oil drain hole is not blocked.

Show/hide table



Illustration 7	g03772483

7. Using a suitable press, install seal collar (17) against the inner race of the lower bearing. Install O-ring seal (18) .

Show/hide table



Illustration 8	g03772904

8. Align the marks and install shaft and bearing housing assembly (7) to impeller housing (6) .

Show/hide table



Illustration 9	g03773970

9. Install a 0.25 mm (0.009 inch) shim between the bearing housing and the impeller housing at each bolt location. Install bolts (5) finger tight until flush with the bearing housing, then tighten to a torque of 24 ± 1 N·m (212 ± 9 lb in).

Show/hide table



Illustration 10	g03772969

10. Lubricate outer diameter of ceramic seal (29) with Tooling (D). Take care to ensure Tooling (D) does not contact seal faces.

11. Using Tooling (E), install ceramic seal (29) over the shaft with the identification marks facing downward.

Show/hide table



Illustration 11	g03773104

12. Slide seal and spring assembly (28) over the shaft and press into position by hand.

Show/hide table



Illustration 12	g03773306

Show/hide table



Illustration 13	g03773311

13. Align the tab of port plate (25) with notch in impeller housing (6) and install port plate (25).

Show/hide table



Illustration 14	g03773402

14. Raise the temperature of impeller (24). Install impeller (24) with the three-digit orientation feature facing upward until impeller (24) comes to rest on the shoulder of the shaft.

Show/hide table



Illustration 15	g03773451

15. Allow the impeller to cool. With the auxiliary water pump assembly positioned upright, check for free rotation of the shaft. If contact occurs between the impeller and the port plate, remove the impeller and the port plate and check for proper installation of both components.

Show/hide table



Illustration 16	g03773481

16. Align notch in port plate (23) with the drain plug hole in impeller housing (6) and install port plate (23) .

Show/hide table



Illustration 17	g03773483

17. Install drain plug (26) and the O-ring seal and tighten to a torque of 16.5 ± 1.5 N·m (146 ± 13 lb in).

Show/hide table



Illustration 18	g03773511

18. Align notch in port plate (22) with the drain plug and install port plate (22) .

Show/hide table



Illustration 19	g03773526

19. Raise the temperature of impeller (21). Install impeller (21) with the three-digit orientation feature facing upward until impeller (21) comes to rest on the shoulder of the shaft.

20. Allow impeller (21) to cool and check for free rotation. If contact occurs, adjust the shims between the bearing housing and the impeller housing.

Show/hide table



Illustration 20	g03773588

21. Align the tab of port plate (3) with the notch in cover (2) and install port plate (3).

22. Position the auxiliary water pump assembly upright. Ensure that the weight of the auxiliary water pump assembly is being supported by the mounting flange. Do not support the auxiliary water pump by the shaft.

Show/hide table



Illustration 21	g03773539

23. Position cover (2) onto the auxiliary water pump assembly. Place a weight of approximately 2 kg (5 lb) onto the center of cover (2). Measure and record the gap at Locations (X), then remove the weight and cover (2) .

    Note: Measurements will be used to select shims for final installation of cover (2) .

Show/hide table



Illustration 22	g03773600

24. Install the O-ring seal onto tube (27). Lubricate the O-ring seal and install tube (27) into impeller housing (27) .

Show/hide table



Illustration 23	g03773605

25. Install O-ring seals (4) and lubricate with Tooling (D) .

Show/hide table



Illustration 24	g03762436

26. Position cover (2) for installation. Using a dead-blow hammer, gently tap cover (2) to install. Position the shims in the locations as recorded in Step 23.

Show/hide table



Illustration 25	g03774144

27. Install bolts (1). Tighten bolts (1) in the following sequence:
    • Tighten the Bolts A, B and C in sequence to a torque of 10 N·m (89 lb in) .

    • Tighten the Bolts A, B and C in sequence to a torque of 18 ± 1 N·m (159 ± 9 lb in) .

    • Tighten the Bolts A and B in sequence to a torque of 24 ± 1 N·m (212 ± 9 lb in).

    • Tighten the Bolt A to a torque of 27 ± 1 N·m (239 ± 9 lb in).

Show/hide table



Illustration 26	g03773609

28. Install gear (9) and bolt (8). Using Tooling (A) to stabilize the gear, tighten bolt (8) to a torque of 55 ± 7 N·m (41 ± 5 lb ft).

29. Using Tooling (F) on bolt (8), measure the rotational torque of the assembly. The rotational torque should be between .4 N·m (3.50 lb in) and 1.5 N·m (13.30 lb in).

End By: Install the auxiliary water pump.