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Re: [TR] Brake drum grabbing

Subject: Re: [TR] Brake drum grabbing
From: "Randall" <TR3driver@ca.rr.com>
Date: Wed, 8 Jul 2015 09:52:32 -0700
Cc: "'list Triumph'" <triumphs@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: triumphs@autox.team.net
Thread-index: AdC5iml6a5lRXeCKR0SsA/cDamHQaQAEqvhQ
> Do you mean releases fully?  It is released enough to not 
> drag when driving. 

If cracking the bleed valve caused the brake to substantially release, then I'd 
call that proof that the problem is hydraulic and
farther up the line (most likely the soft line that links the trailing arm to 
the body).  Normally there should be no hydraulic
pressure at all with the pedal released, so opening the valve would not cause a 
change.  The soft line may be failed internally,
with a flap of material that blocks the flow only sometimes.

However, from your description of getting it loose by rocking the car back and 
forth, I think a stuck wheel cylinder is more likely.


When I bought Stag #2 the rear wheel cylinders were seized in the bores, but 
the brakes seemed OK (evidently working only on the
front discs).  Then when I tried a hard stop (missed a turn in the dusk with no 
one behind me), the rear wheel cylinders extended
and stayed that way.  Took some very determined pounding on the drums to get 
them loose again.

-- Randall  


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