BEARING-.508MM US 2S0503 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     8S-2264     Puller Group     1    
B     173-9774     Wrench Bit     1    Start By:
Remove the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00556563
Note: It may be necessary to pin the fuel pump in order to maintain the correct timing. Refer to Disassembly and Assembly, "Fuel Injection Pump - Remove"for the correct procedure.
Align the timing marks on the crankshaft gear, the camshaft gear, and the idler gear, as shown.
Remove bolts (1) from idler gear (2) .
Remove idler gear (2) and retainer plate (3) .
Illustration 2 g00556757
Remove bushing (4) from idler gear (2) , if necessary.
Remove the bushing with a suitable puller. If the bushing cannot be removed with a puller, grind the face off of one bushing. The remainder of the bushing can then be removed with a press.
Illustration 3 g00556758
Remove idler gear hub (5) from the cylinder block.
Remove nut (6) and the spring washer from fuel injection pump gear (8) .
Remove bolts (7) from fuel injection pump gear (8) .Note: Some fuel injection pump gears may have a tamper proof torx screw in place of one of the four bolts. Use Tooling (B) to remove the tamper proof torx screw, if necessary.
Use Tooling (A) to remove fuel injection pump gear (8) .