PIN-GROOVED 3076135 - Caterpillar

Removal Procedure
Start By:
Remove the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove and Install".
Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
If the front housing is not installed, do not turn the crankshaft. Damage to the engine may occur.
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.
Engine Oil Pump
Illustration 1 g00825411
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Remove retaining ring (9) that retains idler gear (3) on idler hub (1) .
Remove the following items from idler hub (1) :
Collar (8)
Spring (7)
Shim (6)
Oil pump cover (5)
Inner rotor (4)
Remove idler gear (3) from idler hub (1) .
Remove thrust washer (2) from idler hub (1) .
Inspect all the components for wear or damage. If components are worn or damaged, use new parts for replacement.Note: Refer to Specifications, "Engine Oil Pump" for more information.
If the engine oil pump has excessive buildup of sludge, inspect the oil strainer. The oil strainer can be removed by using the following procedure:
Remove the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove and Install".
Illustration 2 g00825406
Remove bolts (12) and oil strainer (13) from the cylinder block. Inspect the oil strainer for damage. If the oil strainer is damaged, use a new part for replacement.
Remove tube assembly (11) from the cylinder block.
Remove O-ring seal (10) from the tube assembly. Inspect the O-ring seal for wear or damage. If the O-ring seal is worn or damaged, use a new part for replacement.Idler Hub
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-0074     Slide Hammer Puller     1    
Illustration 3 g01037604
Use Tooling (A) to remove idler hub (1) from the cylinder block.