sticking callipers

[gstore]

I replaced both my rear callipers just over a year ago as they were sticking.
Now they are doing it again,
Is their anyway you can fix them yourself without having to replace them??

[HARRY SRI]

you can buy new slider kit,new seals

[Caveman_nige]

does anybody have a link to such kits?

[tridley]

Try www.BIGGRED.CO.UK. bought a kit for a 1.8 ls cost £30 although you get both sides. You will probably have to contact them to get a price as they are not listed on the website. The part number was BR203850.

[jodiexii]

Have you tried cleaning slider pins and copper greasing them?
i did mine July and had to do again at weekend as they were sticking

[tridley]

When I changed my rear pads yesterday I found the slider pins were very tight in the grommet and would hardly turn even when greased. I found the caliper was corroded with a white powder around the grommet and this was constricting the grommet. Removing the grommet and filing the corrosion out sorted the problem.

[neill]

If you remove the rubber sleeve and then get a thin wire brush or something similar you can remove all the built up crud inside the hole. Once removed, grease the inside of the hole and also the outside of the rubber, just makes it easier to get it back in. Clean the slider with some fine wet and dry and grease too. Should slide very easy once done.

Be gentle with the sleeves as they can split, if they do

http://www.ebay.co.uk/itm/VAUXHALL-V...item35c1d5ac0b

[jonnyaykroyd]

Silicone grease is best for the slider bolts. petroleum based grease including copper grease can break down the rubber apparently. silicone grease is super slippy and won't dry out with the brake heat.

[Z80]

Actually, the pads always stay close to the disc. Badly slipping pins can also lead to the pads stopping a bit away from the disc, and you get loud rattling noises on bumps.

Greasing the rubber sleeves works very well, but the grease tends to wash off over time, especially if the rubber is old and gets loose. This can easily happen when mounting used brakes, when you upgrade for V6 bakes for instance (as due to their high price, you'll almost always mount used ones !)

I ordered two sets of rubber sleeves for my rear brakes, as the rattling is very loud and upsetting.

They are actually all the same for both 278 and 292 mm, so you can buy the same part number whatever your brakes sizes :

Sliding Sleeves, Caliper : GM 90510227 / Vauxhall/Opel 16 05 905 - Set of 2
Cap, Rear Brake Disc Caliper : GM 90575662 / Vauxhall/Opel 5 43 071 - Set of 2

[jonnyaykroyd]

Actually, the pads always stay close to the disc. Badly slipping pins can also lead to the pads stopping a bit away from the disc, and you get loud rattling noises on bumps.

Yep. The return motion/action of the caliper is controlled by the elasticity of the square cut seal only so pads should run on the discs all the time; just not squeeze the discs all the time. There should be some resistance felt in moving a greased slider bolt/pin in and out of the rubber sleeves....if there's hardly any resistance then there is too much play/wear and it will cause the rattling etc.