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Front belt tensioner bearing replacement - with pictures
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ronp
 


Member Since: 29 Nov 2006
Location: 🌲Galloway⛰
Posts: 14060

Scotland 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

J@mes wrote:
Got any dimensions for your fanny removal tool?

J@mes !!! .... how very dare you !!!!



Laughing
 🌲🌲in the forest & the hills ⛰⛰  
Post #59421031st Jan 2010 7:09 pm
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J@mes
 


Member Since: 10 Nov 2008
Location: Bomber County
Posts: 4464

England 2014 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4

ronp wrote:
J@mes wrote:
Got any dimensions for your fanny removal tool?

J@mes !!! .... how very dare you !!!!



Laughing


You're a very dirty boy!

Bump for the fanny removal tool dimensions!
 2014 D4 XS
2005 D3 SE - Gone 
 
Post #5953182nd Feb 2010 8:19 am
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ridgeback_moor
 


Member Since: 11 Mar 2008
Location: Gateway to the Moors
Posts: 1789

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

http://www.disco3.co.uk/forum/topic44940.html?highlight=

AndrewS posted an image in this thread, although I'm not sure if it's working at the moment
 Previously:
2005 D3 2.7 TDV6 S
1984 90 2.25 Petrol CSW
1992 90 200TDi Hard Top
1995 Discovery ES 300TDi
2003 90 TD5 Truck Cab

 
 
Post #5954122nd Feb 2010 11:34 am
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The Transformer
 


Member Since: 22 Jan 2010
Location: Leicestershire
Posts: 1791

England 2010 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

Great to see so many write ups like this on the site, it fills me with more confidence that I will be able to keep on top of some of the problems that ours may throw up when we get it.
My worries of the jump between our D2 and the D3 are at least now lessened (trying not to read too many "I have a problem threads Laughing ) and I am hoping that I can DIY quite a few things as I have done on the D2.
  
Post #5954232nd Feb 2010 11:49 am
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Iain G
 


Member Since: 31 Jan 2009
Location: Filey
Posts: 430

United Kingdom 2005 Discovery 3 TDV6 GS Manual Santorini BlackDiscovery 3

I note there are two tensioners on the auxiallary belt, of which ridgeback did the lower. Can anyone tell me if it wise to do the upper tensioner bearing at the same time and is it the same size bearing?
  
Post #68213212th Aug 2010 7:52 pm
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Iain G
 


Member Since: 31 Jan 2009
Location: Filey
Posts: 430

United Kingdom 2005 Discovery 3 TDV6 GS Manual Santorini BlackDiscovery 3

I have now completed the task of replacing the cam belt including renewing the aux belt roller bearings. I can confirm the upper roller is a 6203-2RS bearing as per the lower roller. However to change this bearing requires the drilling out or 3 x steel rivets in order to seperate the two halves of the roller. I would therefore recommend a new roller instead of trying to renew the bearing. Here are some pics of me changing the upper bearing if anyone ever has the need to do it without being able to get hold of a new roller at short notice.

Picture of lower tensioner on RHS, versus roller on LHS:


Prise the cap off the roller to expose a Torx bolt:
Click image to enlarge


Undo bolt and roller from shaft:


Drill out the three rivets, taking care not to damage the plastic shield that holds the cap in place. Use a screwdriver or two to prise the two halves apart, then tap out the bearing. The following picture shows the condition of the upper bearing (RHS) versus the lower roller bearing (LHS). As you can see it doesn't appear to have such a hard time as the lower gets, thus I would suggest not replacing unless it is noisy:
Click image to enlarge


The parts of the upper roller ready for re-assambly:
Click image to enlarge


And pop-riveted back together:


So in the end was a pointless task, but I thought it was worth documenting. Neutral
  
Post #68387718th Aug 2010 9:53 pm
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TAC
 


Member Since: 10 Feb 2011
Location: Hayle, Cornwall
Posts: 2


brilliant post...most helpful.

On the sport with dynamic response i understand their is another tensioner or idler, is that the same as the upper or lower ones in this thread?
  
Post #76016211th Feb 2011 4:50 pm
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Dan_NL
 


Member Since: 19 Sep 2010
Location: world
Posts: 1210


J@mes, what's your mileage...??? Since the belts are done at 105K could be a i TIP ! to all to replace it the same time...
  
Post #76020511th Feb 2011 6:02 pm
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chocolademan
 


Member Since: 02 Nov 2010
Location: Snowy Oslo (formerly West Yorks)
Posts: 1245

Norway 2006 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Excellent post!! Managed to change it yesterday throught the fan Shocked Cut my hands up a bit, but went surprisingly well Very Happy

Put everything back again and the squealing had gone Thumbs Up

Trouble is... the squealing is back after 24 hrs!!! Shocked Shocked Big Cry Big Cry

I'm presuming it could be the aux belt roller bearings now??
Any idea's anyone? (D3 is now on 78k....)
 Faultmate MSV2 MultiVehicle
D3: Tailgate Actuator DIY: http://www.disco3.co.uk/gallery/albums/use...IY%7E0.pdf 
 
Post #87665230th Dec 2011 1:03 pm
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thorgal
 


Member Since: 26 Nov 2008
Location: on the east side
Posts: 527

United States 2005 LR3 4.4 V8 HSE Auto Bonatti GreyLR3

There is a TSB in the pulley. New design has raised edges, so the belt won't slip...
  
Post #87668530th Dec 2011 2:13 pm
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gruodiz
 


Member Since: 16 Nov 2011
Location: Klaipeda
Posts: 292

Lithuania 2006 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

What was the millage when it happened?
  
Post #8793065th Jan 2012 5:30 pm
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truck5181
 


Member Since: 31 Dec 2010
Location: york
Posts: 54

England 2005 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3
belt tensioner

mine started to squeal on our last offroad trip that involved a couple of river crossings (to test the newly fitted snorkel) Rolling Eyes anyway after looking on here for help and advice i decided to do it myself, not because im tight but because ive just had to pay for new wish bones front and rear, gearbox flush and the snorkel so could do without the labour charge Confused so yesterday i replaced both top and bottom tensioners and the belt, all went well and managed to do it without removing the fan Thumbs Up all i would say is ask someone to give a hand when putting the new belt on because its a tight little Censored
  
Post #88702622nd Jan 2012 2:40 pm
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Dave T
 


Member Since: 03 Jul 2009
Location: Glasgow
Posts: 6524

England 

Could someone have a look at theirs and tell me, when its running at tickover, do the tensioners sit quite steady (the lower one specifically) or do they have a bit of flutter in them?
 2015 RRS Corris Grey/Black roof
1994 Defender 90

2016 D4 Graphite Santorini Black
2012 D4 XS Orkney Grey
2005 D3 S Maya Gold

Convoy for Heroes 2011 
 
Post #88775524th Jan 2012 7:23 am
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DN
D3 Decade 


Member Since: 23 Jun 2006
Location: W.London.
Posts: 1919

United Kingdom 2006 Discovery 3 TDV6 Base 7 Seat Auto Zambezi SilverDiscovery 3

Dave, the lower (spring loaded) tensioner on mine, has always jumped about a bit at any engine speed,(even when car was new). The upper one I think is fixed and therefore just a guide roller,so sits steady.
  
Post #88781124th Jan 2012 9:41 am
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chocolademan
 


Member Since: 02 Nov 2010
Location: Snowy Oslo (formerly West Yorks)
Posts: 1245

Norway 2006 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Not checked the lower but my top one bounces around a lot and seems to do it in sync with the screaching its now started doing!

Changed the bearing, but still the same Rolling Eyes so new belt has been ordered.....

I filmed it so can upload it later today Thumbs Up
 Faultmate MSV2 MultiVehicle
D3: Tailgate Actuator DIY: http://www.disco3.co.uk/gallery/albums/use...IY%7E0.pdf 
 
Post #88784624th Jan 2012 11:39 am
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