I am investigating uneven emergency stopping with one wheel skidding on a dry road. Could this be the issue and what is the cure?
Front right (offside) upper shoe not wearing evenly.
Note the lower shoe is evenly wearing but the upper shoe seems twisted and not the normal issue with a worn back plate dimple causing the outside of the shoe to wear more than the inside. Here the area not wearing is on the outside on the leading edge and on the inside on the trailing.
Grabbing brake.
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Grabbing brake.
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Re: Grabbing brake.
Note the wear on the lower shoe shows the diameter of the drum is slightly larger than that of the shoe since it is not wearing on the leading and trailing edges.The braking efficiency was probably less when the shoes were initially installed but improved as they bedded in.
I am also checking the rear brakes as the locking wheel was on the other side to this shoe.
I am also checking the rear brakes as the locking wheel was on the other side to this shoe.
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Keith Clements
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Re: Grabbing brake.
The rear shoes also had some uneven wear. Surprisingly the dimple adjustments done years ago seem to have changed or were the new shoes different?
Anyhow apart from that things seemed fine so for now everything was put back. When these shoes have worn out I will readjust since they should now be bedded in.
Anyhow apart from that things seemed fine so for now everything was put back. When these shoes have worn out I will readjust since they should now be bedded in.
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David Morris
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Re: Grabbing brake.
Hi Keith,
With reference to the grabbing brakes, have you tried swapping the drums from side to side, to see if the grabbing problem follows the drum to the other side?
I would suspect that the drums may have worn unevenly and no longer be round, but slightly oval? On the US revival videos that I often watch, their autoparts stores all across the country have a refinishing service in-store for the drums or discs ( they call them 'rotors' over there! ) to restore a perfectly 'true' surface. If you have access to a large enough lathe, perhaps you can do this yourself? I know that the US parts stores have this special rig that is designed to solely do the service that I have mentioned.
All the best,
David
With reference to the grabbing brakes, have you tried swapping the drums from side to side, to see if the grabbing problem follows the drum to the other side?
I would suspect that the drums may have worn unevenly and no longer be round, but slightly oval? On the US revival videos that I often watch, their autoparts stores all across the country have a refinishing service in-store for the drums or discs ( they call them 'rotors' over there! ) to restore a perfectly 'true' surface. If you have access to a large enough lathe, perhaps you can do this yourself? I know that the US parts stores have this special rig that is designed to solely do the service that I have mentioned.
All the best,
David
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Keith Clements
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Re: Grabbing brake.
No David I have not swapped, mainly because the shoes have not yet bedded in. I thought it might be because of incorrect fitting so will let them settle down some more.
These drums have been skimmed on my lathe so that could be the problem!
These drums have been skimmed on my lathe so that could be the problem!
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