SHAFT-PINION 4644986 - Caterpillar

Removal Procedure
Start By:
Remove the left engine side guard. Refer to Disassembly and Assembly, "Engine Side Guard - Remove and Install".
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, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Hot oil and components can cause personal injury.Do not allow hot oil or components to contact the skin.Be sure that the engine and components are cool enough to touch with your bare hand prior to performing any service work.
Drain the coolant from the coolant system into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Capacities (Refill)" for the capacity of the cooling system. Refer to Operation and Maintenance Manual, "Cooling System Extended Life Coolant - Change" for the proper draining procedure.
Drain the engine oil into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Engine Oil and Filter - Change".
Illustration 1 g01321856
Note: The hood support assembly is removed in Illustration 1 for photographic purposes.
Disconnect harness assembly (1). Position harness assemblies (1) aside.
Illustration 2 g01321870
Loosen bolts (2) .
Illustration 3 g01321911
Remove bolts (3). Remove bolts (4). Remove bolts (6). Remove bracket (5) .
Illustration 4 g01321920
Remove nuts (7). Remove bolts (8). Remove engine oil cooler (9) .