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Discussion Starter #1
Hi,

My GTJ 1600 had slightly sticking brakes. Sometimes they would stick more... to the point where I couldn't drive and had to pull over. I can't tell which, but forcing the pedal or just leaving them would free them up.

I just had the calipers (front) and pistons cleaned out, new fluid, new seals and the system bled. New hoses on the front too. And they are still binding.

I have twin remote servos. I read somewhere that there is an
adjustment of the rod going into the servo and if there isn't enough
clearance the brakes will come on?

Is this correct for remote servos and does anybody have more info on this?
Is it something a compete novice could tinker with or is it best left to a specialist?

Thanks!
 

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Discussion Starter #3
problem is that sometimes it binds and then releases and won't bind again. it seems intermittent. with the above theory surely once it's heated up it would stay in a sticky state?
 

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Not true, My Duetto exhibited the same problem. When I started the engine and drove a few miles brake would start to apply themselves. Thought it was the booster, would stop car , crack the ine from MC to booster, problem gone for about 2-3 miles. Turns out the MC had a bit of water in it, and being a floor mounted pedal setup the Mc was close enough to the exhaust to get heated up. Never had the brakes locked from cold. when the MC cooled down the brakes were normal. Removed and replaced the MC and problem has never returned. Just my experience with the same kind of problem
 

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In order, this is what I would do to solve the problem.
If you have the bonaldi boosters, some times the little rubber 90º air bleed hose underneath the booster can collapse causing the booster to hold on. Check to see it's not crimped when brakes are binding.
Check to see that you have a little free play in the pedal to master pushrod (RHD) to allow for heat expansion.
Service rear calipers. (Always neglected)
Service master cylinder.
___
Tim
 

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Discussion Starter #6
Hi all,

My mechanic has installed a new dual circuit MC which cures the binding. However, the brakes were slightly soft, but only on the second application. e.g. I would hit the brake pedal and all would be well.... but if I eased off a bit and applied it again it would be soft and push in further. If I released brake pedal fully it would revert to normal.

He bled the system again but the problem still persists.

Any ideas?
 

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Well this sounds familiar. My brakes still stick, and the pedal is soft, even after pumping a full quart of brake fluid through the system. I have a new booster, MC, brake lines,(as of a year ago) and front calipers (the ones that were sticking, replaced this weekend). Some people have suggested its a brake light switch, but I know its not.

I wish I could answer this question for you.

Will
 
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