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Overheating brake disc!!
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thepurser
 


Member Since: 07 Aug 2017
Location: Lindfield
Posts: 128

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4
Overheating brake disc!!

So I am having an ongoin issue with my drivers side rear disc getting excessively hot!
20 min journey and at the end of it the disc will sizzle like an iron if you spit on it.
Had it in the local garage three times now.
New discs, pads and calipers on the rear both sides.
New flexible brake hoses both sides.
New tyres all round.
Had the rear prop shaft replaced after Bodsy foun d it had destroyed the central bearing.
Bodsy has flushed and changed fluids in Gearbox, transfer box and diff.

Local garage is now suggesting that the ABS pump might need replacing.

Any helpful ideas before I keep spending money with a garage that doesn't know what the cause is?

May be unrelated but I have the following issues that I feel need attention.
The car pulls slightly to the left.
I am getting a vibration through the steering wheel at higher speeds although not always.
Car feels very rough over the road where I would expect it to be a much smoother ride.
Getting lots of rattles and clunks from the back end that I wouldnt normally expect.

For reference I have recently sold my 2012 D4 HSE and bought a 2014 D£ so ride and noixe levels are a comparison of the two.
  
Post #23635214th Mar 2024 6:15 pm
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sailormike
 


Member Since: 04 Apr 2007
Location: Norfolk
Posts: 180

United Kingdom 2016 Discovery 4 3.0 SDV6 HSE Lux Auto Waitomo GreyDiscovery 4

Are you sure it is the disc part overheating or the hand brake drum part in the centre?

When the area is hot is the brake caliper hot as well, if not it may be a badly adjusted hand brake.

I have had a hand brake not release properly causing a similar problem.
 Disco 4
Burstner motorhome
BMW 225e (only 1/2 way to electric) 
 
Post #23635324th Mar 2024 7:40 pm
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thepurser
 


Member Since: 07 Aug 2017
Location: Lindfield
Posts: 128

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4

Hi Sailormike,
Not noticed to be honest. Thanks. Will look for that next drive!!
Would hope that the garage would have checked that when they initially did the discs, calipers and pads and again when they stripped. re lubed and refitted them when the issue remained. Was told that included a handbrake adjustment.
It does make me doubt their skills, (however unfair that may be).
  
Post #23635344th Mar 2024 7:50 pm
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Oxford-boy
 


Member Since: 07 Sep 2015
Location: Oxford
Posts: 1111

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

I'd try a different garage and one recommended on here if I were you.. assuming the one you are currently using is not?
 Jim

2014 Discovery 4 XXV SDV6 Causeway Grey
2016 Discovery 4 HSE Lux SDV6 Loire Blue - now gone 
 
Post #23635845th Mar 2024 11:36 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8227

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

If the brake shoes on the hand brake have not been centralised and adjusted as per Bodsy’s brake Bible* they will overheat.

* available to view in the wiki on head of titles page Thumbs Up
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #23635895th Mar 2024 12:00 pm
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thepurser
 


Member Since: 07 Aug 2017
Location: Lindfield
Posts: 128

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4

Just got back from a 20 min drive, (mainly country roads and a mix of 60, 40 and 30 limits.
Disc hot enough to sizzle when you splash it!
Caliperwarm enough to comfortably touch so assume just radiated heat from the disc.
  
Post #23636415th Mar 2024 6:51 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8227

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Double post.
 It can when others can't,
It will when others won't,
It goes where others don't. 


Last edited by M3DPO on 6th Mar 2024 8:43 am. Edited 1 time in total 
Post #23636786th Mar 2024 8:39 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8227

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Obviously a sticking caliper or park brake wrongly adjusted!- chock the wheels, jack the wheel up put the gears into neutral park brake off and see if the wheel will turn.
Read Bodseys Bible on how to adjust the park brake it’s easy enough to do you only need an Alen key and a flat blade screwdriver.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #23636796th Mar 2024 8:43 am
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DaveT
 


Member Since: 01 Aug 2005
Location: Cornwall
Posts: 2576

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Indus SilverDiscovery 4

Having just been through similar...

I had checked the adjustment of handbrake shoes, and all appeared ok, but still the problem.
Removed the park brake shoes to replace them, and found that the lever arm on back of shoe was siezed. You wouldn't know without fully stripping it.
 Long succession of Disco's since 2001...
SIII Lightweight - neglected & rusting. Bulkhead, A panels, vent panel & outriggers now disintegrated - Next years project! 
 
Post #23637276th Mar 2024 7:45 pm
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thepurser
 


Member Since: 07 Aug 2017
Location: Lindfield
Posts: 128

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4

Dropped Bodsy a message to see if he would be in the area anytime soon, He recommended Clive who came this evening and has just left! Handbrake shoes replaced and a quick tidy around.
Great fella and a stroke of luck he was free and not too far away!!!

He did mention that the brake pipes are looking a little crusty and could do with replacing soon.

Fingers crossed!!
  
Post #23637306th Mar 2024 8:45 pm
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sailormike
 


Member Since: 04 Apr 2007
Location: Norfolk
Posts: 180

United Kingdom 2016 Discovery 4 3.0 SDV6 HSE Lux Auto Waitomo GreyDiscovery 4

Hopefully you are all sorted now. There is an amazing amount of information on this website!
 Disco 4
Burstner motorhome
BMW 225e (only 1/2 way to electric) 
 
Post #23637326th Mar 2024 9:01 pm
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thepurser
 


Member Since: 07 Aug 2017
Location: Lindfield
Posts: 128

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4

Big Cry Censored Big Cry Censored Big Cry Censored Big Cry

Still hot enough to sizzle spit!!!!!!!!

This is becoming a seriously expensive fault chase!
  
Post #23637937th Mar 2024 12:31 pm
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nigethecat
 


Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4244

Ukraine 2016 Discovery 4 3.0 SDV6 Commercial XS Auto Corris GreyDiscovery 4

M3DPO wrote:
Obviously a sticking caliper or park brake wrongly adjusted!.


Or both Big Cry
 I want to see the sweets before I get into your windowless van... I'm not stupid!

Corris Grey D4 Commercial SE 2016
Zermatt Sliver 2007 D3 SE manual (gone)
Indus Silver D4 HSE 2015 (gone)
Bonatti Grey D3 HSE 2006 (gone)
White D3 S (LHD) 2007 (gone)
Firenze Red D4 HSE 2014 (gone)
Black RRS 3.6TDV8 2008 (gone)
Rusty Green Defender 110 1997 (gone)
Black FL2 HSE 2013 (gone) 
 
Post #23637967th Mar 2024 1:05 pm
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thepurser
 


Member Since: 07 Aug 2017
Location: Lindfield
Posts: 128

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4

Hi Nigethecat,
Literally just had both sides stripped, cleaned, checked, new handbrake shoes, and adjusted by Clive from CDS4x4 last night.

He said all seemed in order although there was a lot of brake dust from the handbrake shoes.

Could this be anything other than brake related?
Bearing, Drive shaft, Diff etc?
  
Post #23637987th Mar 2024 1:27 pm
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13018

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

I'd have said flexible hoses - they can fail in one-way-valve mode - but you say they've all been done?
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #23638067th Mar 2024 2:17 pm
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