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GerryG

Member Since: 07 Jul 2019
Location: Coatbridge
Posts: 27

Rear Brake Caliper Piston

Hey

I need to change the front and rear discs and pads 2008 RRSport TDV8 ( pads not worn ) discs are goosed, the rear piston wont retract, is there a way to get this back in or do I need a wind in tool, car has the EPB

Appreciate any help

Cheers

Gerry

Sat Aug 24 2019 11:59am

gogsy1956

Member Since: 15 Jun 2013
Location: Tyne and Wear
Posts: 920

2010 Range Rover Sport TDV8 HSE Bali Blue

Proper tool makes life a lot easier,, unless you have a large "G" clamp handy. 2010 RRS, TDV8
bali Blue / colour coded
side steps / flappy paddles
black perforated leather
22" overfinch
heated everything, TV,fridge ...... now with gold calipers and mud flaps !( black mud flaps that is) !!
Many years ago,,,,, 1955 series 1 landie , sometimes wish I had kept it

Sat Aug 24 2019 2:01pm

Brit Plumber

Member Since: 05 Jan 2018
Location: Sleaford, Lincolnshire
Posts: 1848

2012 Range Rover Sport Supercharged Autobiography Fuji White

The EPB works on shoes inside the drum part of the brake so no special wind back tool required. I just use a big G clamp. Have you popped the reservoir cap off to make sure you haven’t got to much fluid, especially if you’ve already sorted the fronts. 2012 5.0 SC AB
Mods:
TPMS
Genuine LR DRLs
Remote Boot close from key fob
2016 Discovery 4 Mirrors AKA RRS2
2014 L405 Surround Camera retro fit (WIP)
2013 RRS Dual View Screen fit (Complete)
2016 LR4 RSE
2014 LR4 Homelink
2016 FFRR Electrochromatic Wing Mirror Glass

70 plate Focus ST (Current)
1942 VEP Ford GPW Jeep (Willys) (Current)
1943 Whites M16 Halftrack (Current)
16 plate Eurofighter Typhoon, 2 x Eurojet engines with 20,000lbs thrust each. 1380mph

Sat Aug 24 2019 2:53pm

Andy K

Member Since: 18 Sep 2015
Location: GL
Posts: 4799

2005 Range Rover Sport TDV6 HSE Rimini Red

The year of your car is an important questuon

Sat Aug 24 2019 7:15pm

Brit Plumber

Member Since: 05 Jan 2018
Location: Sleaford, Lincolnshire
Posts: 1848

It’s a 2008 car according to his post. 2012 5.0 SC AB
Mods:
TPMS
Genuine LR DRLs
Remote Boot close from key fob
2016 Discovery 4 Mirrors AKA RRS2
2014 L405 Surround Camera retro fit (WIP)
2013 RRS Dual View Screen fit (Complete)
2016 LR4 RSE
2014 LR4 Homelink
2016 FFRR Electrochromatic Wing Mirror Glass

70 plate Focus ST (Current)
1942 VEP Ford GPW Jeep (Willys) (Current)
1943 Whites M16 Halftrack (Current)
16 plate Eurofighter Typhoon, 2 x Eurojet engines with 20,000lbs thrust each. 1380mph

Sat Aug 24 2019 7:27pm

Andy K

Member Since: 18 Sep 2015
Location: GL
Posts: 4799

You shouldn’t need a wind back tool.
It’s a sign the piston is siezed. Which is common.

New caliper time. Not expensive.

Sat Aug 24 2019 10:24pm

GerryG

Member Since: 07 Jul 2019
Location: Coatbridge
Posts: 27

Brit Plumber wrote:
The EPB works on shoes inside the drum part of the brake so no special wind back tool required. I just use a big G clamp. Have you popped the reservoir cap off to make sure you haven’t got to much fluid, especially if you’ve already sorted the fronts.

Got it with G Clamp, sure took some force though, other side ( pass ) is proper seixed, guy used it to tow a boat, reversing in water ) dont know whether to change the caliper or rebiild it

Sun Aug 25 2019 1:19pm

GerryG

Member Since: 07 Jul 2019
Location: Coatbridge
Posts: 27

gogsy1956 wrote:
Proper tool makes life a lot easier,, unless you have a large "G" clamp handy.

Thanks mate, used a G Clamp

Cheers

Gerry

Sun Aug 25 2019 1:19pm

insiorc

Member Since: 17 Jul 2016
Location: Scotland
Posts: 533

2013 Range Rover Sport SDV6 Autobiography Firenze Red

Andy K wrote:
You shouldn’t need a wind back tool.
It’s a sign the piston is siezed. Which is common.

New caliper time. Not expensive.

Are these calipers non serviceable? 20+ years ago I used to remove the pads, carefully push pistons out a little further then clean corrosion to check no pitting then push back in. If the pistons were pitted then new ones could be bought.
I've never worked on newer car calipers though.

Edit:. Just read on another post, it's not worth repairing due to costs of complete caliper. 13MY Range Rover Sport Autobiography SDV6 - mine
14MY Range Rover Evoque Dynamic SD4 Black Pack - wife's
99MY Defender 90 TD5, Soft Top Conversion - my toy, and bairns favourite

Last edited by insiorc on Sun Aug 25 2019 4:35pm. Edited 1 time in total

Sun Aug 25 2019 2:10pm

Brit Plumber

Member Since: 05 Jan 2018
Location: Sleaford, Lincolnshire
Posts: 1848

When I did mine last month, I popped a piece of wood in the Caliper and pushed the piston out on the foot pedal. Obviously you have to be careful how far you pump it out or else you will pop it out of the caliper and it will need refitting and the system bleeding. Once I had it out as far as I dare, I washed the the rubber boots with mild washing up liquid and covered it in tyre dressing and let that dry in. I then put rubber grease on and removed the remaining residue until it was near dry. I then pulled back the boot out of the piston groove and gave that a clean. There was some corrosion evident in the exposed areas but the booted areas were clean. I did scrape some deposits out of the piston groove and lubed with red rubber grease to help the boot seal and to protect the groove from more corrosion. 2012 5.0 SC AB
Mods:
TPMS
Genuine LR DRLs
Remote Boot close from key fob
2016 Discovery 4 Mirrors AKA RRS2
2014 L405 Surround Camera retro fit (WIP)
2013 RRS Dual View Screen fit (Complete)
2016 LR4 RSE
2014 LR4 Homelink
2016 FFRR Electrochromatic Wing Mirror Glass

70 plate Focus ST (Current)
1942 VEP Ford GPW Jeep (Willys) (Current)
1943 Whites M16 Halftrack (Current)
16 plate Eurofighter Typhoon, 2 x Eurojet engines with 20,000lbs thrust each. 1380mph

Sun Aug 25 2019 2:25pm

Andy K

Member Since: 18 Sep 2015
Location: GL
Posts: 4799

Yeah it's not worth rebuilding.
I put a new piston in mine, but it didn't fix it!

Turns out there is a groove that needs cleaning out, which causes it to seize. So if you know what you are doing, clean out the groove behind the seal.

But you may as well fit new ones

Sun Aug 25 2019 5:48pm

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