displaying posts 1 to 14 of 14

Author Subject: rear brakes binding?
nick205gti6

Junior User

Location: Grimsby

Registered: 22 Mar 2009

Posts: 83

Status: Offline

Post #1
I noticed recently that there is a grinding noise coming from my rear brakes. I think they have been binding for some time and have worn the pad down really quickly.
One of the pads is now completely missing!

I've just bought new disks and pads but what causes the binding?? and how do I free them up?

________________________________________

1990 205 GTI-6
Posted 14th Dec 2009 at 23:47
rudolf

Seasoned Pro

Location: Skelmersdale

Registered: 07 Apr 2004

Posts: 2,769

Status: Offline

Post #2
I had the same problem. After changing the handbrake cable it still happened so changing the caliper cured it.

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Posted 15th Dec 2009 at 05:32
puglover Banned!

Location: Far out there

Registered: 08 Jun 2006

Posts: 6,095

Status: Offline

Post #3
the sliders or handbrake mech cn seize up as said prob new caliper or some grease might help.
Posted 15th Dec 2009 at 05:38
nick205gti6

Junior User

Location: Grimsby

Registered: 22 Mar 2009

Posts: 83

Status: Offline

Post #4
I suspect its the caliper thats seized then. When I set off from cold and release the handbrake its fine, when I come to a junction it grinds after I've released the footbrake.
hopefully I can clean it up with a wire brush and grease it. are there any guides or kits you can use to refurbish them?
or diagrams on how the calipers operate?
thanks!!

________________________________________

1990 205 GTI-6
Posted 15th Dec 2009 at 17:49
nick205gti6

Junior User

Location: Grimsby

Registered: 22 Mar 2009

Posts: 83

Status: Offline

Post #5
well ive found this;
eBay link

is it easy to refurb them? any guides?
also what causes them to seize, heat? or brake dust?

________________________________________

1990 205 GTI-6
Posted 17th Dec 2009 at 00:00
tvrfan007

Seasoned Pro

Location: In the garage

Registered: 29 May 2005

Posts: 3,488

Status: Offline

Post #6
It's pretty easy to refurbish the calipers, and in my experience they're rarely beyond repair.

Firstly, strip the carrier down and remove it, take off the disc and get a better look at what you're dealing with. The piston boot might be split, the piston will likely be dry of grease, and the sliders have 4 boots that should all be inspected for splits. I would advise you to buy a pot of red rubber grease if you don't have any, and pack the sliders and piston boots with this - try and clean as much dried out grease up as you can.

Wind the piston right out for easiest cleaning. Smile

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Posted 17th Dec 2009 at 02:01
nick205gti6

Junior User

Location: Grimsby

Registered: 22 Mar 2009

Posts: 83

Status: Offline

Post #7
thanks tvrfan007.
sounds easy enough so I've just ordered one and some red rubber grease!

________________________________________

1990 205 GTI-6
Posted 17th Dec 2009 at 02:13
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline

Post #8
When you take them apart you will notice an angled piece that is held in by two spring clips, this gets rusty and can cause the pads to stick. When you remove it to get the pads out, clean the rust off it with a file or replace it, and when it cones to fit it again, use some copper grase on all the parts the pads slide on. Not too much as you don't want any getting on the friction surfaces but you get the idea.

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Posted 17th Dec 2009 at 03:30
nick205gti6

Junior User

Location: Grimsby

Registered: 22 Mar 2009

Posts: 83

Status: Offline

Post #9
right the kit arrived today.
lots of parts and i only know what a few do!! anyone identify the others?

as far as copper grease I've heard one garage saying they arnt using it at all now as its not good for the rubber etc and are using a a non metallic subtetute?

________________________________________

1990 205 GTI-6
Posted 19th Dec 2009 at 21:03
rich-6

Seasoned Pro

Location: Bottoming out!

Registered: 06 May 2007

Posts: 5,306

Status: Offline

Post #10
nick205gti6 wrote:
non metallic subtetute?


It'l be lithuim Cool

________________________________________

Cool

RIP Pete Sims
Posted 20th Dec 2009 at 00:35
rudolf

Seasoned Pro

Location: Skelmersdale

Registered: 07 Apr 2004

Posts: 2,769

Status: Offline

Post #11
rich-6 wrote:
nick205gti6 wrote:
non metallic subtetute?


It'l be lithuim Cool



Lithium's a metal so could be a compound of it?

________________________________________

S Reg Diablo standardsSpec SORNED
R Reg Nile standard spec written off then repaired
X Reg Astor in need of TLC
R Reg Nile to restore
Set of Lions to fit.
Posted 20th Dec 2009 at 01:35
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,839

Status: Offline

Post #12
rubber brake grease, look for a brake grease that doesn't contain copper basically Smile

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Posted 22nd Dec 2009 at 16:11
phillipm

Seasoned Pro

Location: Rotherham

Registered: 15 Oct 2006

Posts: 20,607

Status: Offline

Post #13
It'll probably be ceramic or silicon-based

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Posted 22nd Dec 2009 at 17:20
tvrfan007

Seasoned Pro

Location: In the garage

Registered: 29 May 2005

Posts: 3,488

Status: Offline

Post #14
Agree with the above it'll likely be silicon based. Smile

Red rubber grease served me ok. Smile

________________________________________

I'm Si btw Tee hee

Night Blue VW Golf GTD
Bianca LBSC Rallye - Track/Road Slag Project Thread
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Posted 22nd Dec 2009 at 17:41

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