Wiggly dizzy

[Dave Wortley]

Surely you can check for axial play by removing brush cover and seeing if it will move or as you have removed dizzy poking something down the hole in dynamo housing and checking movement. Up and down(radial) movement try lifting rotor with fingers through  brush cover or bent wire under skew gear if possible. The oilite bush at brush end of rotor wears fairly rapidly.

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The bearing housing at the engine end of some coil engined cars has a bearing retainer which is attached to the housing with 3 countersunk screws which come loose, allowing the rotor to float. If so loctite the screws in.
Cheers,
Dave.