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rear brake re-fix
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xcentric
 


Member Since: 01 Apr 2015
Location: Shropshire, UK
Posts: 1081

2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4
rear brake re-fix

Gone through a set of pads and a disc on driver's side in a few thousand miles, so suspect the calliper is sticking. Is it simpler/easier/quicker to replace the calliper wholesale, or to attempt to repair it with a seal kit etc? Not done one before..... (did the brakes last time, which was fine thanks to Bodsey's bible
  
Post #196226311th Jul 2018 3:29 pm
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

I looked at new calipers on AF recently, they are only about £60. It's not worth the faff, just put new ones on.
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #196226911th Jul 2018 3:46 pm
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kajtzu
 


Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6538

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

Unless you really know what you’re doing I wouldn’t mess with a seal kit - you might also need new pistons, too.... Usually when the seals fail water enters the interior and it’ll end up eventually rusting in there. I would also advocate getting a brand new caliper from somewhere.
  
Post #196227711th Jul 2018 4:00 pm
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xcentric
 


Member Since: 01 Apr 2015
Location: Shropshire, UK
Posts: 1081

2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

AF say it may just be the sliders - how does one diagnose whether the calliper has failed or not?
  
Post #196227811th Jul 2018 4:03 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20713

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

By attempting to push the piston back in...
 My D3 Build Thread

TDV8 Retrofit Build Thread 
 
Post #196227911th Jul 2018 4:08 pm
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xcentric
 


Member Since: 01 Apr 2015
Location: Shropshire, UK
Posts: 1081

2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

by hand? I can wind it back in with the calliper tool, so I assume you mean with finger pressure?
  
Post #196228311th Jul 2018 4:16 pm
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

unlikely to be able to push pistons back by had, unless you've got Gorilla Grip!

I usually use a G Clamp, should take mild pressure from the clamp to move them.
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #196231211th Jul 2018 5:24 pm
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Browny90
 


Member Since: 19 Jul 2016
Location: Ashbourne
Posts: 686

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

They will mean the caliper sliders, not the pistons..

Its where the 8mm bolts bolt into, (where you need the 13mm Spanner and skinny 17mm Spanner) there is a rubber boot over the slider. you should be able to slide them in and out by hand..

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 Disco4 MY16 SDV6 Landmark Black
Disco4 MY12 SDV6 XS Orkney Grey (Gone)
Defender 90 200tdi Completely rebuilt. 
 
Post #196249312th Jul 2018 7:58 am
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L319
 


Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2079

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

Mine were sticking, it turned out they were basically dirty, gave a good clean and a smear of grease and all OK. As stated, only needed a couple of spanners.
  
Post #196255912th Jul 2018 12:01 pm
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Sydney
 


Member Since: 11 Aug 2013
Location: St Neots
Posts: 903

United Kingdom 2006 Discovery 3 TDV6 Base 7 Seat Manual Zermatt SilverDiscovery 3

If you haven't stripped them before then just buy some new calipers as the dust seals can be a real pain in the hoop...
 De-Tango
V8 Brakes
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Post #196268912th Jul 2018 5:48 pm
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Bardley
 


Member Since: 02 May 2018
Location: Hertfordshire
Posts: 437

United Kingdom 2011 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4

As Browny says.. check the slide pins first.
Just undo the bolts and see if the pins will move freely.
That's the cheaper option before you layout for new calipers, and is a more likely cause.
 2011 MY D4 HSE
Previously 2001 D2 TD5, 1996 D1 300Tdi, 1985 90 2.2 petrol.
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Post #196573921st Jul 2018 1:20 pm
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ItSmee
 


Member Since: 05 Nov 2015
Location: Berkshire
Posts: 34

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Zermatt SilverDiscovery 4

I would check the slider pins first especially if the brake pad wear is uneven between the inboard and outboard pad. If you fit new calipers to sticky sliders you will still have the same problem. You can check the slider operation by removing the cliper and check for ease of movement on the sliders (should move with very light finger pressure). Do not overextend the sliders as this will pop the pin boots off which can allow grit into the pins.
Landrover sell new slider pin kits which contain new pins, grease and pin boots (one kit per wheel required). It is best to remove the calliper carrier when changing the sliders. This makes it a simple bench fitment and also helps to ensure that the holes the pins go into are totally clear of debris and old grease before fitment.
  
Post #196918531st Jul 2018 4:29 am
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xcentric
 


Member Since: 01 Apr 2015
Location: Shropshire, UK
Posts: 1081

2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Just to complete the thread - redid the disk and pads, with new calliper. Seal on end had gone at least, and sliders were sticky. Redone with more copper grease this time, in half the duration of the time before. Dodgy connection Fiona in brake wear sensor meant I shorted them out. All is good, even after 2 weeks in Pyrenees.
  
Post #197701823rd Aug 2018 7:45 pm
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galwaygreen
 


Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525

United Kingdom 2016 Discovery 4 3.0 TDV6 Graphite LE Auto Loire BlueDiscovery 4

for something that weighs 2 7 ton you need good brakes..new caliper over repair every time
  
Post #197703423rd Aug 2018 8:15 pm
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