C8.7 Marine Engine Caterpillar

Removal Procedure

Start By:

1. Remove the housing (front).
2. Remove the flywheel housing.
3. Remove the oil pan.

Note: To prevent engine damage, do not alter or deface the fractured mating surfaces of connecting rod and cap. Do not reverse the connecting rod cap location.

Note: To prevent engine damage, do not push fractured surface of connecting rod.

Note: To prevent engine damage, keep the fractured mating surfaces of the connecting rod and cap clean and free of lint and debris. Do not allow the mating surfaces to rest on other surfaces. Do not bump the mating surfaces or drop the connecting rod or cap. Doing so could chip or mar the mating surfaces, causing incorrect mating of rod and cap.

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Illustration 1	g03872814

1. Remove bolts (4), bolts (2), and oil pickup (5) .

2. Remove bolts (6) and discard.

3. Remove bolts (3) and stiffener plate (1) .

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Illustration 2	g03872875

4. Remove bolts (7), connecting rod caps (8), and main caps (9).

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Illustration 3	g03873240

5. Remove bearings (10) .

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Illustration 4	g03872891

6. Use/Attach a suitable lifting device to remove crankshaft (11). The weight of crankshaft (10) is approximately 77 kg (170 lb)

Installation Procedure

1. Install crankshaft (10) in the reverse order of removal.

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   NOTICE
   Ensure that the crankshaft main bearing tabs engage with the grooves in the block and the crankshaft main bearing cap.

   1. Tighten bolts (7) to a torque of 50 ± 2 N·m (37 ± 2 lb ft).

   2. Tighten bolts (7) an additional 90° ± 5°.

   3. Starting at the rear and working toward the front of stiffener plate (1) tighten bolts (3) to a torque of 49 ± 3 N·m (36 ± 2 lb ft).

   4. Starting at the rear and working toward the front of stiffener plate (1) tighten bolts (6) to a torque of 140 ± 7 N·m (103 ± 5 lb ft).

   5. Starting at the rear and working toward the front of stiffener plate tighten bolts (6) an additional 60° ± 5°.

   6. Starting at the rear and working toward the front of stiffener plate tighten bolts (6) an additional 60° ± 5°.

   7. Tighten bolts (2) to a torque of 41 ± 4 N·m (30 ± 3 lb ft).

   8. Tighten bolts (4) to a torque of 23 ± 2 N·m (204 ± 18 lb in).