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Old 19th August 2019, 11:11   #12
HarryM1BYT
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75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD

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Quote:
Originally Posted by macafee2 View Post
I think they may need changing, spinning the fan backwards does seem to give off a brush sound but forwards is ok.
macafee2
I would expect that to be the case, brushes bed themselves in, in the usual direction of rotation, building up a sharper corner at the trailing edge. Your spinning it in reverse, mean that sharp trailing edge becomes a leading edge. It is bound to sound a little different. What matters is the condition of the brushes and the commutator.


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