3508, 3512 and 3516 Generator Set Engines Caterpillar

Crankshaft - Remove

Usage:

3508 23Z

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	4C-9832	Engine Rollover Stand	1
B	138-7576	Link Bracket	2

Start By:

Remove the rocker shafts and the pushrods.
Remove the front drive housing.
Remove the front balancer group, if necessary.
Remove the flywheel housing.
Remove the balancer gear from the rear gear group.
Remove the engine oil pan.
Remove the piston cooling jets.

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NOTICE

Failure to remove the rocker shaft assemblies and push rods can result in damaged valves when the pistons and connecting rods are pushed away from the crankshaft. To help avoid damage to the valves, remove the rocker shaft assemblies and push rods before you remove the crankshaft.

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NOTICE

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

Use Tooling (A) to turn the engine to a horizontal position. The engine can be supported with Tooling (A) or with blocks. The engines have the following weights:
- The weight of 3508 Engines is approximately 4445 kg (9800 lb).
- The weight of 3512 Engines is approximately 5902 kg (13,000 lb).
- The weight of 3516 Engines is approximately 7718 kg (17,000 lb).
Note: It is not necessary to remove the counterweights from the crankshaft, if the piston and connecting rod assemblies have been removed from the engine.
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Illustration 1 g00914774
Place identification marks on counterweights (1). Remove counterweights (1) from the crankshaft.
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Illustration 2 g00914776

Note: Ensure that the journals of the crankshaft are not scratched by the connecting rods.
Remove connecting rod caps (2) and push the connecting rods away from the crankshaft.
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Illustration 3 g00914800
Remove the center main bearing cap and thrust plates (3) from each side of the center main bearing.
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Illustration 4 g02054216
Attach Tooling (B) to each end of the crankshaft.
Attach a suitable lifting device to Tooling (B). Refer to Illustration 4. For 3508 Engines, the weight of the crankshaft is approximately 400 kg (880 lb). For 3512 Engines, the weight of the crankshaft is approximately 590 kg (1300 lb). For 3516 Engines, the weight of the crankshaft is approximately 800 kg (1760 lb). Remove remaining main bearing caps (5). Remove crankshaft (4) from the engine.
Remove the upper halves of the main bearings.
Remove the upper halves of the connecting rod bearings.
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Illustration 5 g02054218
If necessary, remove bolts (7) and crankshaft gear (6) from each end of the crankshaft.