Reply to "Questions Regarding Replacing the Mangusta Jackshaft Bearings"

johnnywoodsMember

I have found that if I put a straight edge inside the aluminium casting where the bearings sit it's nice and straight. If I then bolt it onto the engine without the jack-shaft in place it distorts. So I shim the casting until the straight edge sits on all 3 bearing surfaces, then remove and install the bearings. Maybe this is why the centre bearings fail? I am no expert on shafts or bearings. I still install all 3 bearings. I'll let you know if I have any fail. Maybe the factory did this and the shims got lost over time?

10/13/231:31 AM

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