Calipers Not Working After Swap!

[NateR31]

heres the story..

i bolted up the r32 gtst calipers and discs into my car.

Bled the brakes numerous of times and they just arent working, the pistons arent pushing the pad down, therfor arent grabbing the discs.

i bled through the lines, and then though the caliper.

Calipers had no fluid in them at all, is there any speacial things you need to do if they are bone dry?

could the calipers be sized and the pistons are jammed?

This is happing on both sides!

any idea whats wrong

thanks

Nate

[Bullant47]

heres the story..

i bolted up the r32 gtst calipers and discs into my car.

Bled the brakes numerous of times and they just arent working, the pistons arent pushing the pad down, therfor arent grabbing the discs.

i bled through the lines, and then though the caliper.

Calipers had no fluid in them at all, is there any speacial things you need to do if they are bone dry?

could the calipers be sized and the pistons are jammed?

This is happing on both sides!

any idea whats wrong

thanks

Nate

<{POST_SNAPBACK}>

Hi Nate, I'm not a mechanic but I have watched the job done by mechanics. Always bleed the longest line first progressing to the shortest line. Some mechanics also use a compressor with an adaptor and suck the fluid through the line. Also pistons can become jammed.

[Sydneykid]

heres the story..

i bolted up the r32 gtst calipers and discs into my car.

Bled the brakes numerous of times and they just arent working, the pistons arent pushing the pad down, therfor arent grabbing the discs.

i bled through the lines, and then though the caliper.

Calipers had no fluid in them at all, is there any speacial things you need to do if they are bone dry?

could the calipers be sized and the pistons are jammed?

This is happing on both sides!

any idea whats wrong

thanks

Nate

<{POST_SNAPBACK}>

Did you check that the pistons moved before you put the callipers on the car? If not, check it before you go any further, just leave the brake hoses connected.

cheers

PS; sticking used 10 + years old callipers on a car without having them serviced is asking for trouble.

[Green_s13]

it sounds like the calipers have jammed, if you are getting fluid through the line but not the calipers then i would say that is your trouble

[blind_elk]

You fitted the calipers to the correct sides of the car? Bleed nipple at the top.

You should be able to simply open the bleed nipple and let gravity do the work of filling the chambers - slow and tedious, but effective.

I wouldn't be surprised if the pistons were siezed in the calipers, though.