WASHER-THRUST 5076751 - Caterpillar

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Noticeable wear on the outer flange
DO NOT USE AGAINNew Hub Plates at Rebuild
Dealers choosing to rebuild existing couplers with new shot peened hub plates must take the following actions after sub assembly:
Locate the coupling assembly part number.The part number is typically on the exposed area of the hub barrel.
Permanently mark out or etch over the existing "00" or "01" which follow the part number.
Stamp a new "SP" near the part number.The "SP" mark should be visible on the outer assembly without the need of additional disassembly. The unique marking serves as visual confirmation that the coupling assembly contains the latest hub plates and is available for installation.Coupling Assemblies for Caterpillar
As of 01 May 2014, all 3524 engine coupling assemblies manufactured by Caterpillar for parts distribution contain two new hub plates. The required "SP" marking will be present and should be located prior to use.Reuse Exceptions
If a coupling assembly has to be removed from service prior to achieving one full life cycle, the hub plates could be considered for reuse providing the plates meet the following criteria:
The events associated with the premature removal of the coupling are not related to the coupling system in any way.
The coupling hub plates have not exceeded 5,000 total hours of engine run time.
At tear down, if any internal component of the coupling assembly is damaged, the hub plates cannot be reused regardless of hours, including all 26 springs (spring are never to be reused).
After tear down, the hub plates must pass non-destructive magnaflux inspection to identify surface damage that might be difficult to locate during visual inspection.After passing the selection criteria, the hub plates can be considered reusable for one new life cycle. Caterpillar recommends that Dealers properly document any reuse exception activity for future tracking purposes.Hub Plates
The coupling assembly includes two hub plates that need to be inspected for cracks and wear. Use the magnaflux method to inspect for cracks in the hub. Replace any hub plate that has a crack or excessive wear at the spring contact area.
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Indicated area requires inspection for cracks. Replace the hub plate if a