GQ rear brake issues

[JBE]

Hi All
I have a bit of an issue with my rear brake sqealing most of the time and also getting quite hot at times (GQ, single piston caliper – disk brake).
I searched and had a look in the bible, but I couldn't find any relevant post.

Given that the rear axle seal or bearing as the seal has just been replaced, I think it’s either the calipper is not sliding properly or the piston is not retracting enough.
I greased the calipper slide when I reseated the pads last time and the workshop has done it again and the problem is still there.
Is there anything, I might have missed?
What should I do next?
- Put a refurb kit through the caliper
- Get another s/h caliper
Cheers
Joachim

[zookimal]

A split in the rubber seal/boot around the piston will have caused it to sieze. Fairly common.

[coxy321]

I'd strip the piston down, clean it all up (make sure theres no score marks or dags), then re-assemble with all new seals.

[Grant SA]

Hi J,


I am from SA and had a similar problem on the left rear. Wheel kept getting very hot. I changed wheel bearings , pad and discs, only to find out that the caliper mounting bolt had a slight bend in it. Piston would move pad in, but was unable to release competely thus cuasing more than normal pressure.


I changed the bolts and have not had an issue.

Regards

Grant

96 GQ ST 4,2TD

[JBE]

Hi Grant

Are you talking about the pin/bolt which is part of the sliding mechanism (the one with the rubber boot)?

Cheers
J

[Grant SA]

Hi J,

Correct. How I fold out it was this, was that I used some carb cleaner on all the stripped items. On seeign a shinny polished section on the bolt, I realised this was the &*&^%^$%$ that cost me a fortune.(Replaced pads , disc's and wheel bearings.


Regards