Found the Cause of the Noise on Left Hand Lock on the 1929 Model A Sport Coupe

 

There has been a recirculating grinding type noise coming from the Model A on hard left hand locks since we changed the brake back plates.

Simon and I set off on a road test to pinpoint the noise and Simon nailed it!

The noise was coming from the right hand rear wheel.

After removing the wheel and hub/drum assembly we found a couple of issues.

  1. The back plate and brake drum had been rubbing
  2. The brake shoes have a raised metal edge and this has been rubbing on the inside of the brake

The brake shoe issue was alleviated by grinding the metal edge off the brake shoes

Once this was achieved the drum was placed in the lathe and a small amount of material removed to ensure that the drum and back plate were no longer  in contact.

A final road test confirmed that the diagnosis was correct and the treatment had been a success!

Here’s some photos of the work carried out

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