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Pinky



Member Since: 09 Jun 2016
Location: England
Posts: 208

England 2011 Defender 110 Puma 2.4 DCPU Baltic Blue
Knock after polybushes
Hi, just had polybushes fitted to front radius arms, rear radius arms, A frame, and panhard rod. Also had a new A frame ball joint put in while it was apart. Now on hard braking or big body roll I get a knock, sometimes happens when pulling away especially if pulling away around a corner. Sounds as if it's coming from under neath my seat area. ( did check that as well).

It's a 2011 110 2.4 puma with 98k on the clock.

I have checked all the bolts and they are as tight as I can get them, and checked for anything loose but can't find anything. Any ideas as it seems to be getting worse Big Cry
Post #547865 11th Jul 2016 5:23pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20354

United Kingdom 
Have you checked rear lower shock bushes?
Post #547867 11th Jul 2016 5:31pm
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Pinky



Member Since: 09 Jun 2016
Location: England
Posts: 208

England 2011 Defender 110 Puma 2.4 DCPU Baltic Blue
Only in as much as grabbing the shock and trying to shake it! Nothing obvious but I'll have a better look in the morning.
Post #547872 11th Jul 2016 5:54pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20354

United Kingdom 
Look at them from the rear and rock the body up and down slightly, you'll see any excess play if there is any.
Then there are the rear damper / shocker upper bushes.

And the front, they are a possibility. But especially check the rear.

Maybe all fine though..


Last edited by custom90 on 11th Jul 2016 8:46pm. Edited 1 time in total
Post #547874 11th Jul 2016 5:58pm
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Pinky



Member Since: 09 Jun 2016
Location: England
Posts: 208

England 2011 Defender 110 Puma 2.4 DCPU Baltic Blue
I'll give them a look.
Post #547925 11th Jul 2016 8:45pm
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Browny90



Member Since: 20 Jul 2015
Location: Derbyshire
Posts: 183

United Kingdom 2004 Defender 90 200 Tdi SW Stornoway Grey
I would go round and double check the fit and tightness of all the arrears which has new bushes. it sounds like a maybe the one of them is loose.. just double check to rule it out! My 1986 90 is currently on a full rebuild, with new chassis, Paint etc.. Very much a hybrid, TD5 Chassis, tub & bulkhead with a 200TDI and LT77 GB Painted in Stornoway Grey Smile 2 years off the road, but getting close to completion now
Post #548005 12th Jul 2016 7:01am
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Cupboard



Member Since: 21 Mar 2014
Location: Suffolk
Posts: 2971

United Kingdom 2011 Defender 110 Puma 2.4 HT Corris Grey
If you've put polybushes in and then torqued everything up as tight as you can get it, your suspension has just been made a lot stiffer and less compliant than it was before so you're going to be putting a lot more force through the various components. The cause of the knock may well have been there before, it's just you're now provoking it when you weren't previously.
Post #548007 12th Jul 2016 7:04am
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dave18



Member Since: 11 Jul 2015
Location: Gorleston, Great Yarmouth
Posts: 497

United Kingdom 1984 Defender 110 300 Tdi CSW Portofino Red
Interesting my 110 was fully polybushed by the PO about 2 years ago circa 8k miles and the past two month been getting a similar knock . been mainly when turning right thou. Thought it was swivels or bearings but they are fine!!!
Post #548364 13th Jul 2016 5:51am
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Pinky



Member Since: 09 Jun 2016
Location: England
Posts: 208

England 2011 Defender 110 Puma 2.4 DCPU Baltic Blue
I have embarrassingly discovered the source of the knock when braking hard or big body rolls.
I have a large pull out drawer fitted in the tub which has about a dozen or so pigeon holes for holding various bits of equipment for work. One of the lesser used further back holes has a selection of odd sized sockets for the landy.
This weekend I tightened my front wheel bearings and it occured to me that the 52mm lump of a socket might be the culprit!
Sure enough, put it back in a different, more padded hole, and bob's your uncle, no more knock! Embarassed
I guess it was just stable enough during normal driving but the heavy braking or body roll was enough to propel it against the ali sides of the pigeon hole. DOH!! Banging Head
Post #551147 25th Jul 2016 3:55pm
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2227

United Kingdom 1984 Defender 90 BMW M57 3.0 Diesel HT Auto Pennine Grey
Laughing The Land Rover 90 - Many are called, few are chosen.

50 Shades of Pennine Grey
Post #551499 27th Jul 2016 4:39am
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Loz2286



Member Since: 31 Aug 2015
Location: High Wycombe
Posts: 121

United Kingdom 
You're not the first to do this. I chased a knocking sound in my Series 2 for about six months until i discovered that the big adjustable spanner i had in the under seat tool box had become unrolled from the old T shirt I had it wrapped in. 1999 Td5 110 CSW
1961 Series 2 88 LPG
Post #551541 27th Jul 2016 9:33am
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