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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2759

United Kingdom 
Rattle after replacing brakes?
I fitted new rear discs, calipers and pads last week.
Everything works OK but it rattles like anything at lower speeds when you hit a bump unless you are braking, when it's silent.
It's kind of a tsssssh tsssssh tsssssh as you go over rough tarmac rather than an actual rattle.
What did l do wrong? I fitted the anti rattle shims and springs, and used copper grease on everything.
Post #563911 14th Sep 2016 5:38pm
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Screbble



Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2098

United Kingdom 2004 Defender 90 Td5 XS CSW Zambezi Silver
Is it possible that one of the calliper pistons is stuck/seized in the cylinder bore for some reason and there's a slight gap between the piston face and the new pads?

As you've fitted the shims and springs correctly then I'm really not sure what else it could be.

I suppose that given the extent of the work carried out you may have knocked or misaligned something?

Given the potential risk, it might be worth getting the wheels off again and checking all fasteners for tightness.
Post #564013 14th Sep 2016 9:39pm
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williamthedog



Member Since: 29 Dec 2012
Location: south wales
Posts: 3441

2011 Defender 90 Puma 2.4 PU Tamar Blue
Were the pads too loose when they went into the caliper.
If they were they're rocking in the caliper
Post #564045 15th Sep 2016 5:34am
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agentmulder



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

Kuwait 
Wouldn't the pistons take care of any gap pretty smartly after the first depress??

>>edit, I see what you mean now... rocking on the other axis... good point

Was going to suggest the rotor has runout issues (it's not on true), but if it's only on rough tarmac, that puts that theory to rest (yeah?). I'd say just open it all up again and check it's still fastened to spec.

Check runout anyway if you didn't. Solved the bowel problem, working on the consonants...
Post #564047 15th Sep 2016 5:52am
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
Did you check for play at your wheelbearings? Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)
Post #564051 15th Sep 2016 6:20am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17372

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
It is very normal for the rear pads to rattle in the caliper. I am sure that there have been many threads about this in the past.

If thsi is the source of your rattle, it isn't harmful, just incredibly irritating!
Post #564063 15th Sep 2016 7:18am
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gazman



Member Since: 17 Aug 2015
Location: Liverpool
Posts: 652

United Kingdom 2003 Defender 90 Td5 HT Alpine White
my caliper is worn causing my rear pads on the ns to rattle. it did stop eventually 2014 - current ..... 2003 defender td5 90 (my car)
2009 - current .... 2005 zx10r
Post #564090 15th Sep 2016 8:31am
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2759

United Kingdom 
Thanks for the replies.

It's a high pitched tinny rattle. The anti rattle shims are held on by the pins that hold the brake pads, and have a C shaped hole in them, are they fitted with this hole to the front, or to the rear?
Maybe l fitted them the wrong way round.

There were no instructions and the old calipers did not have the shims to compare.
Post #564115 15th Sep 2016 10:41am
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2759

United Kingdom 
It seems these are anti squeal and not anti rattle shims.

I took it apart again and put copper grease on the sides of the pads where they slide on the caliper.

The noise stopped for a few miles then came back. It seems the pads are not a snug fit in the calipers and there's also a bit of play at the pins.

Calipers and pads are Britpart XS which are supposed to be their premium range.
Post #564214 15th Sep 2016 4:18pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17372

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
lightning wrote:
Britpart ...


I think you may just have identified the root cause!
Post #564232 15th Sep 2016 5:16pm
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agentmulder



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

Kuwait 
Likely it's the 'premium' noise you're heading.

FWIW, no squeals from Ferodo pads in my recently rebuilt calipers... Solved the bowel problem, working on the consonants...
Post #564270 15th Sep 2016 6:55pm
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2759

United Kingdom 
roel wrote:
Did you check for play at your wheelbearings?


Yes l had to remove the hub to fit the new discs.
Post #564398 16th Sep 2016 7:08am
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agentmulder



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

Kuwait 
TD5 has two not system huh? (Not stake nut)

I guess what Roel is asking is did you set the axial load on the (taper) bearings 'properly'?

(Inverted commas as there are a few ways to do this in the various literatures, official or not)

They need a fair bit of load, doing it 'by the book' in my case led to hubs with more friction than I expected, but driving they appear spot on once wheels are on (no heat build up)... Indicating to me that setting g them 'nice and spinny' when it's just the hub may lead to loose bearings once the extra sideways forces of the wheels are applied (over rough terrain) Solved the bowel problem, working on the consonants...
Post #564407 16th Sep 2016 7:54am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

stake nut on TD5 both my 90 have stake nut for wheel bearing
Post #564408 16th Sep 2016 8:01am
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
Original a td5 has a one stake nut system with a spacer between the bearings. Mine has not anymore as I had a little bearing play and changed to the old 2 nut system.
But when you replace the discs and probably bearings too the original spacer should be the right size but why does Land rover supply diiferent sizes? Twisted Evil

What I wanted to point out is that if you have some bearing play your pistons will be pushed in further and the pads have more space to rattle. Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)
Post #564413 16th Sep 2016 8:46am
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