BELT GP-SERPENTINE 5056957 - Caterpillar

If the front housing is not installed, do not turn the crankshaft. Damage to the engine may occur.
Illustration 1 g00825411
Typical example (1) Idler hub (2) Thrust washer (3) Idler gear (4) Inner rotor (5) Oil pump cover (6) Shim (7) Spring (8) Collar (9) C-clipNote: If the crankshaft must be rotated with the housing (front) removed, certain parts must be removed. This will prevent engine damage. These parts are the inner rotor (4), the oil pump cover (5), the shim (6), the spring (7) and the collar (8). For the correct procedure to remove the components, refer to Disassembly and Assembly, "Engine Oil Pump - Remove".