| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 4C-9832 | Engine Roll-Over Stand | 1 |
Start By:
- Remove the rocker shaft assemblies and the push rods.
- Remove the front housing.
- Remove the balancer gear from the rear gear group.
- Remove the piston cooling jets.
| NOTICE |
|---|
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The rocker shaft assemblies and the push rods must be removed to ensure that the inlet and exhaust valves are not open. If the valves are open the face of the inlet and exhaust valves could be damaged when the pistons are pushed into the cylinder, away from the crankshaft. |
| NOTICE |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
| NOTICE |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, PERJ1017, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. Dispose of all fluids according to local regulations and mandates. |
- Use Tool (A) to turn the engine in a horizontal position. The engine can also be supported with blocks. The engines have the following weights:
- G3508 Engines weigh approximately
4300 kg (9500 lb) . - G3512 Engines weigh approximately
5443 kg (12000 lb) . - G3516 Engines weigh approximately
6447 kg (14200 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 g00577386 - G3508 Engines weigh approximately
- Place identification marks on counterweights (1). Remove counterweights (1) from the engine.
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Illustration 2 g00577387 Note: Ensure that the journals of the crankshaft are not scratched by the connecting rods.
- Remove connecting rod bearing caps (2) and push the connecting rods away from the crankshaft.
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Illustration 3 g00577388 - Remove the center main bearing cap and two thrust plates (3) from each side of the center main bearing.
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Illustration 4 g00577389 Typical example - Use two of the bolts from the flywheel and install one bolt in each end of the crankshaft.
- Attach a suitable lifting device to the crankshaft. Remove remaining main bearing caps (5) and remove crankshaft (6) from the engine. The crankshafts have the following weights:
- The crankshaft for the G3508 Engines weighs approximately
367 kg (807 lb) . - The crankshaft for the G3512 Engines weighs approximately
549 kg (1201 lb) . - The crankshaft for the G3516 Engines weighs approximately
762 kg (1602 lb) .
- The crankshaft for the G3508 Engines weighs approximately
- Remove the upper halves of the main bearings and also remove the upper halves of the connecting rod bearings.
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Illustration 5 g00577390 - If necessary, remove bolts (7) and crankshaft gear (6) from each end of the crankshaft.
