A TR7 16V Posted August 26, 2018 Share Posted August 26, 2018 Anybody know why the dynamo fan would start to catch and ring on the lower dynamo mounting bolt? it's not causing any problem other than the noise, but I don't like it. Graham Quote Link to comment Share on other sites More sharing options...
Georgie Posted August 31, 2018 Share Posted August 31, 2018 Quoted from A TR7 16V- Anybody know why the dynamo fan would start to catch and ring on the lower dynamo mounting bolt? it's not causing any problem other than the noise, but I don't like it. Graham Had the same problem last year the nut holding the dynamo fan had come loose. Quote Link to comment Share on other sites More sharing options...
A TR7 16V Posted September 2, 2018 Author Share Posted September 2, 2018 Quoted from Georgie- Had the same problem last year the nut holding the dynamo fan had come loose. Nope, pulley nut it seems well tight, and no play in dynamo front bearing I can find, either side-side or end-float. Top mounting 1/2" AF bolt and locking nut have clearly seen too many 13 mm spanners and have nearly no corners, but I can't see any problem with bottom bolts. But the bottom front nut has cut a notch in the back of the fan blades about 3 mm wide and 1.5 mm deep. Graham Quote Link to comment Share on other sites More sharing options...
A TR7 16V Posted November 18, 2018 Author Share Posted November 18, 2018 Finally found what was catching when I swapped the dyno for an alternator - a previous carer had put a washer with an oversized inner and outer diameter at the front end of the lower bolt, and it looks like this moved somehow and started to catch. Graham Quote Link to comment Share on other sites More sharing options...
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