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Wism

Member Since: 27 Jun 2016
Location: Surrey, UK
Posts: 21

Clunk/snap noise when braking

Hi all,

Had an issue with braking so took it back to the used car dealer under warranty and they found that a rear caliper was seizing so they decided to replace both rear calipers, as they claim. Since receiving my Landy back from them there is this "clunk" noise when a brake. I can also feel it on the brake pedal. It feels like the brake cable has snapped but the brakes work fine. Can anyone advise me what this is?

10th Aug 2016 9:31pm

Mash

Member Since: 09 Feb 2015
Location: Guernsey
Posts: 1674

The brakes are all hydraulic so should be no snapped cable, if you look under ther rear you will be able to see the callipers easily, when ever a calliper is fitted new or old new bolts should be fitted so they should be an easy give away, the bolts are 13mm multi hex but I can't recall the torque setting off the top of my head. 90 wolf - Jasmin http://www.defender2.net/forum/topic39408.html
90 V8 - Maggie http://www.defender2.net/forum/topic42564.html
110 TD5 - Buggsy http://www.defender2.net/forum/topic59029.html
52HG25 lightweight https://www.defender2.net/forum/topic72342.html
D3 Hse - Fiona
Capri 2l S - Anna

Think I might have a problem............

10th Aug 2016 11:31pm

agentmulder

Member Since: 16 Apr 2016
Location: Outer Space
Posts: 1324

First thought was similar... They haven't fastened the caliper bolts properly and the caliper is moving on its mount.

This is something you shouldn't be driving on until you've checked them . Worst case would be both bolts falling off then the caliper saying goodbye whilst ripping the hydraulic line, i.e. fluid loss, 'pump your brakes to stop' style problem.

No need to fret though, it's an easy check - remove each wheel and give the the calipers a good wiggle fore and aft to check for play.

If loose nip it up, and the others, then take it for a nice an easy test drive, if no more problem, still drive straight to mech for a complete check of lines, connections, fluid bleed and re-torque of all parts worked on, preferably with you hovering with your free coffee and complete service voucher (that you'll sell and then go elsewhere).

If not loose, still head in and take it easy on the way, but don't necessarily claim it was their fault, it is a LR after all ... Solved the bowel problem, working on the consonants...

11th Aug 2016 12:45am

agentmulder

Member Since: 16 Apr 2016
Location: Outer Space
Posts: 1324

I guess also possible is a disc runout issue or groove ?

Less dramatic failure, but still, take it back... Solved the bowel problem, working on the consonants...

11th Aug 2016 12:47am

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

Could just be the old brake pads rattling around in the nice clean new callipers with no baked on brake dust to hold them in place Ray
My build thread
http://www.defender2.net/forum/topic17615.html

11th Aug 2016 8:18am

agentmulder

Member Since: 16 Apr 2016
Location: Outer Space
Posts: 1324

If you're forking out for calipers (instead of replacing seals and pistons) you'd think the stealer could at least replace the pads! They were probably low and therefore exposing the pistons to corrosion anyway (which could/would have caused the seizure). Solved the bowel problem, working on the consonants...

11th Aug 2016 8:33am

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17470

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

It could be that new pads are slightly loose in the calipers. It is not unusual for there to be a slight clunk as the pads pick up when the brakes are applied.

If Britpart calipers and pads were used (quite likely) the pads probably don't fit the calipers very well anyway!

Needs to be checked out asap though, anyway.

11th Aug 2016 8:59am

yanto

Member Since: 03 Sep 2009
Location: caerleon
Posts: 230

I have a click when I brake from the front, had a look and the pins and springs are slack so check them out too.

11th Aug 2016 6:47pm

agentmulder

Member Since: 16 Apr 2016
Location: Outer Space
Posts: 1324

What you guys are describing is tantamount to transmission slop, and similarly the more loose it gets the worse the wear gets.

An unsustainable situation yeah? Solved the bowel problem, working on the consonants...

11th Aug 2016 7:46pm

Wism

Member Since: 27 Jun 2016
Location: Surrey, UK
Posts: 21

Thanks all for the advice. I will be removing the wheels and checking the calipers over the weekend. I have realised its not happening every time I am braking.

11th Aug 2016 9:18pm

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