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Hi everybody,

I currently have seized front brake calipers and am wondering if any other Oz owners of GTV 1750/2000's know whether I can get new calipers from and/or where I can get kits to fix up the old calipers.

As usual, all your help is greatly appreciated.

Regards,
AusGTV2000 :)
 

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Aus,
When my calipers required overhauling, the local hydraulics shop did it. The kits are available and so long as the calipers are not too badly corroded, it should not cost too much. $30 should buy you two kits.
If you have to purchase new or reconditioned calipers, the usual suspects (Highwood, Alfaholics, Classic Alfa Romeo etc.) stock them on an exchange basis. They should also be available locally in Australia as ATE are common brakes, shared by many manufacturers (eg: Mercedes).
Probably pays to overhaul the rear calipers as well and replace the flexible hydraulic hoses while you are at it.
Regards and Merry Xmas,
Chris
 

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I gt my rebuild kits at international auto parts....not very expensive like Chris stated. It's actually an OK job to do yourself, once you get the calipers unstuck.
 

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I used the previously mentioned grease fitting and grease gun to pop mine out, worked like a charm.
 

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My rear brakes were frozen. Well, the wheel would turn until you put your foot on the brake pedal and then it would be impossible to turn by hand. But then my car hadn't been driven in many years:). I stuck a couple of flatblade screwdrivers between the disc and the pads and gently leveraged the pistons back into their bores. It freed them up after a few applications of braking and leveraging. Still, I think when my car is ready for the road, I'm going to pull them apart and clean the pistons and bores from all that rusty build up.
The big question is, does anyone know where to get the two flat O rings per caliper? Other than those O rings that fit between the two caliper halves, the dust seals and piston seals are readily available. Common wisdom says not to reuse the O rings on a rebuild.

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Dave,
It's usually possible to rekit the calipers without splitting them - in fact the recommendation is not to split them. I've never worked out why, it's just what I've been told.
Chris
 

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x2 on that
 

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Correct in the workshopmanual is written that you must never split a caliper. Anyone did, survived the curse, and is willing to confess?
 

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Probably because the joint will leak like fun afterwards.

When I worked for a Mercedes specialist, part of the general service procedure we did on all ATE braked cars that came in was to lever the pistons back then press the pedal to push them back out as suggested above. Do this 5-6 times per piston. Sure it's a bit laborious with 8 pistons on the car and it helps to have an assistant to press the brake pedal for you but it keeps the pistons free in the caliper and stops this sort of thing happening. Once a year or whenever you do the service will do it. I'm about to do the ones on the front of my 75 over Christmas.

I managed to free up the brakes on my own GT by doing this (it had been stood for 7 years when I bought it) but the brakes always seized at the slightest opportunity (like when I went on holiday and didn't use the car for two whole weeks...)
 

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I have separated the front caliper halves on both my ATE equipped 105 cars at various points. I just made sure I had a proper little o-ring between the halves, and I never had any issues. I just thought it was good maintenance!

I hate the anticipation of blowing out the pistons, but I just stuck the air hose into the bleed nipple hole, and aimed the puck inside a stout cardboard box, so that it wouldn't get damaged when it was ejected. It exits the bore with a ka-pow!! I then inspect for bad pitting, and just clean things up, put the new seals on, and voila. Make sure the pistons are put back with the correct angle in that cutout.

Happy Holidays,

Steve Schaeffer
Seattle, WA
 

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You can split the calipers

Dave,you can split the calipers and reuse the o-rings without fear.I did it two times and it works fine.Be sure that you put back the 4 bolts with the same torque and install the pistons with a thin coat of grease.
Best regards,
Serban
 
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