Bent drive shafts, is this normal?

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fourier
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Re: Bent drive shafts, is this normal?

Post by fourier » Fri May 31, 2019 7:52 pm

retrovan wrote:
Fri May 31, 2019 2:59 pm
If I had 3 cents to rub together, I would still bet it is oval drums.

To have 3 cars by the same owner, with the same brake guy, have the same problem, points to drums, not bent shafts.

This is possible but never heard of someone having that problem.

Good luck with your investigation.......

Herman
I also think it unlikely that all three your cars have bent axles, and rather suspect distorted or poorly skimmed drums.

Try to trouble shoot...
Lift the rear wheels off the ground. Adjust the brake shoes until they just contact the drum. Turn each drum through a full revolution. If you find a drum that has constant resistance for the full revolution, that drum is probably running true. Now swap the true running drum to another axle, and check again as above. If resistance remains constant, the axle is not bent.

I recently had a well known brake company in Cape Town, skim my Karmann Ghia rear drums. Long story short... drums ended up 0.8mm out of true, and by the time the problem was corrected, the drums were over sized, and turned into paper weights... Not every brake shop can skim these drums properly.


(o= i =o) (o\ ! /o)

german
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Re: Bent drive shafts, is this normal?

Post by german » Sat Jun 01, 2019 8:17 am

Does the drum have play and fit or have the right spicket on the shaft?

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John Alves
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Re: Bent drive shafts, is this normal?

Post by John Alves » Tue Jun 04, 2019 8:26 am

The pulsating has reduced quite a bit since skimming, but not 100%,I will investigate this weekend and report
No sense being pessimistic. It wouldn't work anyway.

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Terry Phillips
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Re: Bent drive shafts, is this normal?

Post by Terry Phillips » Tue Jun 04, 2019 12:33 pm

The drums might have a high spot that the drum skimmer wont get out and must be ground down with a pencil grinder and check the ovality of the drums.My 2c worth.

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John Alves
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Re: Bent drive shafts, is this normal?

Post by John Alves » Mon Jun 10, 2019 10:39 am

Do I remove the dust covers from these wheel bearings? I can't see how gearbox oil can circulate freely to the bearing surfaces
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No sense being pessimistic. It wouldn't work anyway.

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retrovan
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Re: Bent drive shafts, is this normal?

Post by retrovan » Mon Jun 10, 2019 11:28 am

I normally remove only the one cover being the inside Gearbox facing one.

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John Alves
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Re: Bent drive shafts, is this normal?

Post by John Alves » Mon Jun 10, 2019 11:47 am

will do
No sense being pessimistic. It wouldn't work anyway.

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