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Geoff 90



Member Since: 21 Jan 2012
Location: Wexford/Dublin
Posts: 26
Rear break imbalance
Hey another question for everybody. My td5 90 failed its doe the same sort of test as the mot on not getting enough of a reading on the rear breaks. The pads are about 12 weeks old and a garage I got to retest the rear breaks said I had a slightly tired left rear calliper so I had that changed. Thought it was easier for them to do it for me as they could bleed the system a lot easier than me. So went to collect the landie yesterday and was told it hasn't fixed the problem.

Just wondering did anybody have any idea what else I could do to try fix the problem. The garage say changing the break master cylinder might fix the problem but surely if that was the problem it would effect the breaks all around!? Was thinking I might change out the break fluid as its never been changed to see if it helps.

Sorry about the long winded post
Post #175314 13th Oct 2012 9:25am
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324
United Kingdom 
Could be the flexihoses? They can fail by ballooning slighting, which would reduce the effective pressure downstream. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #175321 13th Oct 2012 9:49am
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Geoff 90



Member Since: 21 Jan 2012
Location: Wexford/Dublin
Posts: 26
I thought the same myself but they said they can't see anything wrong with the lines. I was recommended the garage because they have an ex landie mechanic working there so was hoping he might have seen the problem before.
Post #175322 13th Oct 2012 9:52am
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me@td5.org



Member Since: 16 Jan 2011
Location: Warwick
Posts: 856
2000 Defender 90 Td5 HT Epsom Green
Mine failed on the same thing. I had new disks and pads all around at the same time so was surprised to find out that the rear disks were shot. Had everything stripped down and rebuilt and a new brake pipe all the way from the bias valve. Went straight through after that. Well on the brakes anyway..
Post #175338 13th Oct 2012 11:02am
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wslr



Member Since: 18 Jul 2010
Location: Wellington, Somerset
Posts: 581
United Kingdom 
A slightly tired brake caliper isn't good enough. Rebuild it or fit a new one. That will usually sort it out.

Perhaps the one on the other side needs looking at.
Post #175495 13th Oct 2012 7:55pm
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Geoff 90



Member Since: 21 Jan 2012
Location: Wexford/Dublin
Posts: 26
Fitted a new calliper already and it didn't sort it going to drive it for a few days and get it re checked and see if the readings are any better
Post #175500 13th Oct 2012 8:01pm
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grafty99



Member Since: 15 Aug 2012
Location: North Devon
Posts: 4785
United Kingdom 2002 Defender 90 Td5 HT Caledonian Blue
dodgy brake bias valve? 2002 90 Td5 Station Wagon
1990 Vogue SE
Triumph Tiger Explorer 1200
Td5 90 Thread http://www.defender2.net/forum/topic50767.html
Tdi 110 Thread https://www.defender2.net/forum/topic69562.html
RRC Thread http://www.defender2.net/forum/topic54492.html
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Post #175554 14th Oct 2012 12:00am
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bpman



Member Since: 21 May 2008
Location: Oslo
Posts: 8069
2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black
why do I think calipers should be replaced in pairs (on the same axle) ?
Post #175559 14th Oct 2012 6:12am
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Geoff 90



Member Since: 21 Jan 2012
Location: Wexford/Dublin
Posts: 26
Where is the break bias valve!? Guessing there is no way of telling if its gone other than replacing it!? Yeah your probably right I should have replaced the pair
Post #175577 14th Oct 2012 8:09am
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me@td5.org



Member Since: 16 Jan 2011
Location: Warwick
Posts: 856
2000 Defender 90 Td5 HT Epsom Green
It is on the bulkhead below your servo
Post #175623 14th Oct 2012 10:10am
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8022
 2011 Defender 110 Puma 2.4 USW Stornoway Grey
try plumbing rear brakes straight to servo see if you still get the problem - ie bypass the bias valve.

could be the one flexi pipe (top of rear diff) balloning, pence to change and nothing lost.

unlikley to be the MC but it could be if the rear port has some crud in it.

do they feel spongy - not just air in it?

how old is the caliper on the other side? change it anyway - callipers are what £20? Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #175649 14th Oct 2012 12:14pm
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