Generator Decoupler - Removal

REMOVAL










The generator decoupler (2) is used only with certain engines.

Two different type generator decoupler pulleys are used. One can be identified by the use of machined splines (3).










The other can be identified by a hex opening (2) and will not use splines.

Different special tools are required to service each different decoupler. Refer to following procedure.

INA Decoupler










1. Disconnect negative battery cable.
2. Remove generator and accessory drive belt.
3. Position Special Tool 8823 (VM.1048) (2) into decoupler (1).










4. Determine if end of generator shaft is hex shaped (2) or.










5. .or is splined (2).










6. If hex is used, insert a 10mm deep socket (1) into tool 8823 (VM.1048) (2).










7. If splined, insert a 5/16" 6-point hex driver, or a 10mm 12-point triple square driver (1) into tool 8823 (VM.1048) (2).
8. The generator shaft uses conventional right-hand threads to attach decoupler. To break decoupler loose from generator threads, rotate tools as shown
9. After breaking loose with tools, unthread decoupler by hand from generator.

Litens Decoupler





1. Disconnect negative battery cable.
2. Remove generator and accessory drive belt.
3. Position Special Tool 8433A into decoupler. Align to hex end of generator shaft.





4. The generator shaft uses conventional right-hand threads to attach decoupler. To break decoupler loose from generator threads, rotate end of tool clockwise.
5. After breaking loose with tool, unthread decoupler by hand from generator.