Caliper problem 100 turbo

saladdodger · 21-01-12, 08:18 PM

Ive bought pagid brake discs/pads for front and rear of my 100 turbo, started on the rear. Everything looked the same as what i took off but refitting was not happening.

The piston wound back in but kept winding, didnt actually go far enough in to get the caliper over the new pads/disc.

I refitted the old disc and pads, took it for an hours drive, the rear side i was working on was almost glowing red, you could smell the heat and feel it 6inches away, the face of the alloy was extremely hot

I guess the piston is now stuck on, pressed in all the time.

Do you think i need a new caliper(s) or have i done something wrong????

Ive not got to the fronts yet

New pagid rear discs and pads

You can see that the caliper wont fit

missfire · 21-01-12, 08:50 PM

woah.. something not right there, is the centre bore right? did the discs fit before you put the caliper carrier back on? dics manufactured wrong? maybe C4 ones or something? i had massssssssssive trouble with drums for mine, brake engineering fought me for weeks telling me that the pcd was 4 x 100 not 108..

saladdodger · 21-01-12, 09:24 PM

centre bore is fine, pic shows the caliper twisting the disc off, discs from what my eyes see are identical, disc slots on no prob, carrier goes on but caliper just wont slide over new pads.

Even when the piston is wound in as far as it would go

Now its red hot with the old pads & disc

yeti · 21-01-12, 10:18 PM

Handbrake sticking/not returned fully?

K Simmonds · 21-01-12, 10:23 PM

Andy, sound like you have purchased the wrong pads, and/or discs. Either that or you have not cleaned the carriers and callipers properly, I doubt this second option but it is essential everything is properly clean on reassembly.

Also you should not have wind the calliper right back to make everything fit, piston should be a turn and a half out and still go together.

Right, I'm through pissed and finding typing hard, will give you some more info tomorrow.

TeXerv · 21-01-12, 10:27 PM

Quote:

Originally Posted by yeti

Handbrake sticking/not returned fully?

I guess that's the fault. Can you shoot a picture of the break lever at the caliper (is it in it's rest position)

TeXerv · 21-01-12, 10:34 PM

And there are different disc dimensions, depending on the fab. year / month

saladdodger · 21-01-12, 10:40 PM

Quote:

Originally Posted by K Simmonds

Andy, sound like you have purchased the wrong pads, and/or discs. Either that or you have not cleaned the carriers and callipers properly, I doubt this second option but it is essential everything is properly clean on reassembly.

Also you should not have wind the calliper right back to make everything fit, piston should be a turn and a half out and still go together.

Right, I'm through pissed and finding typing hard, will give you some more info tomorrow.

Cheers Kit.

The discs and pads say they are for my car on the ECP website and on the boxes, only one advertised when i bought them. Fairly clean and didnt really need that much cleaning, The pads didnt seem that much bigger than the ones i took off which are around a year old.

Quote:

Originally Posted by TeXerv

I guess that's the fault. Can you shoot a picture of the break lever at the caliper (is it in it's rest position)

Handbrake was working correctly, how would it of got stuck on???? weird

Only pics i took today

TeXerv · 21-01-12, 10:58 PM

The lever often get's sticky in the caliper housing. You must ensure, that the lever end is touching the spring holding bolt as the parking brake is released. If not, the piston will not be turned in it's final position.
When is you car built?

saladdodger · 21-01-12, 11:07 PM

1990 type 44 C3

21-01-12, 10:18 PM	#4
yeti Senior Member Classic Audi Club Member Join Date: Oct 2009 Location: Derby Posts: 1,166	Handbrake sticking/not returned fully? __________________ 1990 Coupe Quattro (WTF did I buy that for?) Half a 1983 Coupe FI (long term parts shelf) 2003 Cors-arrrgh More Polos that you'd ever believe No time, no money, all the wrong tools and a workshop that's too far away

21-01-12, 08:50 PM	#2
missfire making wooden things Classic Audi Club Member Join Date: Dec 2009 Location: cow land Posts: 8,156	woah.. something not right there, is the centre bore right? did the discs fit before you put the caliper carrier back on? dics manufactured wrong? maybe C4 ones or something? i had massssssssssive trouble with drums for mine, brake engineering fought me for weeks telling me that the pcd was 4 x 100 not 108..

21-01-12, 09:24 PM	#3
saladdodger Senior Member Classic Audi Club Member Join Date: Jun 2011 Posts: 1,030	centre bore is fine, pic shows the caliper twisting the disc off, discs from what my eyes see are identical, disc slots on no prob, carrier goes on but caliper just wont slide over new pads. Even when the piston is wound in as far as it would go Now its red hot with the old pads & disc

21-01-12, 10:23 PM	#5
K Simmonds Senior Member Classic Audi Club Member Join Date: Dec 2009 Location: Mid Wales Posts: 1,060	Andy, sound like you have purchased the wrong pads, and/or discs. Either that or you have not cleaned the carriers and callipers properly, I doubt this second option but it is essential everything is properly clean on reassembly. Also you should not have wind the calliper right back to make everything fit, piston should be a turn and a half out and still go together. Right, I'm through pissed and finding typing hard, will give you some more info tomorrow.

21-01-12, 10:34 PM	#7
TeXerv Grown up member Join Date: Oct 2011 Location: Northern Krautland Posts: 241	And there are different disc dimensions, depending on the fab. year / month

21-01-12, 10:58 PM	#9
TeXerv Grown up member Join Date: Oct 2011 Location: Northern Krautland Posts: 241	The lever often get's sticky in the caliper housing. You must ensure, that the lever end is touching the spring holding bolt as the parking brake is released. If not, the piston will not be turned in it's final position. When is you car built?

21-01-12, 11:07 PM	#10
saladdodger Senior Member Classic Audi Club Member Join Date: Jun 2011 Posts: 1,030	1990 type 44 C3