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72 rear drum hub/drive clearance to dummy shaft

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What should the clearance be between the dummy shaft and the center bore of the drum?  Tbh I think there is some wear due to previous lack of maintenance  can anyone measure a new part please??

Brake drum

Thanks Ian, that also makes sense. 

I was a little concerned since the hole looked offset to the hub so wasn’t sure. There is around 3mm radial clearance. 

 


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