3512B Generator Set Engine Caterpillar

Crankshaft - Remove

Usage:

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 shaft assemblies and the pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Remove".
Remove the flywheel housing. Refer to Disassembly and Assembly, "Flywheel Housing - Remove".
Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Remove".
Remove the piston cooling jets. Refer to Disassembly and Assembly, "Piston Cooling Jets - Remove and Install".

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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 weight of the 3512B Engine is approximately 6800 kg (15000 lb).
Note: Do not 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 g01124519
Place identification marks on counterweights (2). Remove bolts (1) and counterweights (2) from the crankshaft.
Note: Do not reuse bolts (1). Use new bolts in order to secure the counterweight to the crankshaft.
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Illustration 2 g01124522

Note: Number the connecting rod caps and the connecting rods for installation purposes.
Remove bolts (3). Remove connecting rod cap (4) and push the connecting rod away from the crankshaft.
Note: Ensure that the journals of the crankshaft are not scratched by the connecting rods.
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Illustration 3 g01124538
Attach Tooling (B) to each end of crankshaft (7). Attach a suitable lifting device to Tooling (B). The weight of the 3512B crankshaft is approximately 600 kg (1325 lb).
Remove bolts (5) and main bearing caps (6).
Remove thrust plates (8) from each side of the center main bearing.
Remove crankshaft (7) from the cylinder block.
Remove the upper halves of the main bearings from the cylinder block.
Remove the upper halves of the connecting rod bearings from the connecting rods.
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Illustration 4 g01124543
If necessary, remove bolts (9) and crankshaft gear (10) from each end of the crankshaft.