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Gareth



Member Since: 12 Dec 2011
Location: Bramhall
Posts: 547

England 2003 Defender 90 Td5 CSW Oslo Blue
Need to change the serpentine belt, any tips?

My TD5 (with aircon) has got a loud squeeling noise, looks like the serp belt is slipping.

It's dark now so can't see anything. I'm going to buy a new belt on Monday, but is there anything else I should be replacing? Or anything else that's likely to have caused it?

It came on very quickly, one frosty morning, and has been squeeling ever since. Any tips? 1966 S2a 109 aka Betsy
1968 S2a 88 aka Bob
2002 TD5 90 CSW
2013 D4 HSE Lux
2014 Jaaaag F Type 3.0 Supercharged.

Post #583895 10th Dec 2016 6:54pm
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bm52



Member Since: 04 Apr 2010
Location: Kent
Posts: 2187

United Kingdom 2014 Defender 110 Puma 2.2 XS CSW Havana

not had a TD5 but on a 300 I had the squeak was caused by the failing bearing on the belt tensioner.
Might be worth checking.

Post #583899 10th Dec 2016 7:14pm
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 609

Canada 2000 Defender 110 Td5 XS CSW Epsom Green

Second that, for a Td5 as well... pick up a tensioner even if just to have as a spare if its not needed. You can then rebuild the old one with a bearing replacement and keep it if it is noisy. Check all the pulley's while you are in there. The tensioner is fairly inexpensive as is a replacement bearing. 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

Post #583901 10th Dec 2016 7:20pm
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lightning



Member Since: 23 Apr 2009
Location: Stockport
Posts: 518

United Kingdom 

Our 90 TD5 was making a similar noise. If you spray the belt with WD-40 and the noise stops, then it's the belt.
If the noise does not stop then it's most likely the tensioner bearings.

The belt can be changed without removing the fan, but it's quite tricky. Put a ring spanner on the tensioner bolt and release the tension, then hook the spanner under the radiator hose to hold it there.

It's possible to extract/replace the belt but if you have a tool to get the fan off it's much easier.

Post #583958 10th Dec 2016 10:10pm
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custom90steve



Member Since: 21 Jan 2010
Location: South West England
Posts: 17782

United Kingdom 

Wouldn't the WD40 make the belt regularly slip?

I've never had a TD5 but on the 2.4 Puma you can remove it without removing the fan.
A strategically placed crowbar does the job with enough leaverage. 🇬🇧 Made In GB. 🇬🇧

Post #583978 10th Dec 2016 10:59pm
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Alien



Member Since: 18 Jan 2015
Location: Bacchus Marsh
Posts: 230

Australia 

Also consider changing the idler bearing fitted where the ACE pump is on the DiscoveryII (under the air conditioner).
My experiance has been(Disco2) either the tensioner or idler bearing chirps, they then seize and burn through the belt with the harmonic balancer being damaged as the belt breaks.
There is a third bearing to check mounted in the timing case for the fan.

I gave up on trying to just change bearings as I had mixed results personally and with mates also.
A complete bolt on tensioner is the only way I go now, if the bearing has worn so has the pivot it works on aswell as the spring.

Removing the fan does make it easier but as has been said it can be done with it still fitted, what's a little skin of your knuckles?
Draw a picture of how it runs around the pullies, some are ribbed for the belt, others smooth as the back of the belt runs on them.
I usually fit the belt over the air conditioner last as I find it easier to do this way.
Double check the belt is sitting properly in all the groves, particularly the harmonic balancer before starting up.
Keep all the old parts for emergency spares, I mark the old belt for direction of rotation too.

Cheers, Kyle. Cheers,
Kyle.

Post #583993 10th Dec 2016 11:48pm
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Gareth



Member Since: 12 Dec 2011
Location: Bramhall
Posts: 547

England 2003 Defender 90 Td5 CSW Oslo Blue

Cheers chaps. Sounds pretty straight forward. 1966 S2a 109 aka Betsy
1968 S2a 88 aka Bob
2002 TD5 90 CSW
2013 D4 HSE Lux
2014 Jaaaag F Type 3.0 Supercharged.

Post #584037 11th Dec 2016 10:01am
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Gareth



Member Since: 12 Dec 2011
Location: Bramhall
Posts: 547

England 2003 Defender 90 Td5 CSW Oslo Blue

Done Bow down

Very easy job, took me 45 minutes. I fitted a new belt and a complete tensioner. Now she is sounding great again! 1966 S2a 109 aka Betsy
1968 S2a 88 aka Bob
2002 TD5 90 CSW
2013 D4 HSE Lux
2014 Jaaaag F Type 3.0 Supercharged.

Post #585204 15th Dec 2016 12:12am
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bm52



Member Since: 04 Apr 2010
Location: Kent
Posts: 2187

United Kingdom 2014 Defender 110 Puma 2.2 XS CSW Havana

Thumbs Up

Post #585207 15th Dec 2016 12:17am
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Triple7



Member Since: 30 Aug 2015
Location: Down South
Posts: 69

United Kingdom 2004 Defender 90 Td5 SW Oslo Blue

GarethR wrote:
Done Bow down

Very easy job, took me 45 minutes. I fitted a new belt and a complete tensioner. Now she is sounding great again!


Did you use Genuine LR Parts? Do you have the P/N's handy for the Belt & Tensioner , i'll need to do this in the near future Thumbs Up

Post #585235 15th Dec 2016 7:23am
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Gareth



Member Since: 12 Dec 2011
Location: Bramhall
Posts: 547

England 2003 Defender 90 Td5 CSW Oslo Blue

Yes genuine parts, from Duckworths. Tensioner is ERR6951, belt is PQS101500 (that's with aircon)

Only slightly tricky bit was getting the fan off. I used a good fitting spanner, and gave it a good hard clout with a hammer. It's conventional right hand thread.

Use 15mm socket on tensioner nut to pull the tensioner off the belt whist you slip it off the pulleys.

14mm 12 pointed socket and long breaker bar to release tensioner bolt. 1966 S2a 109 aka Betsy
1968 S2a 88 aka Bob
2002 TD5 90 CSW
2013 D4 HSE Lux
2014 Jaaaag F Type 3.0 Supercharged.

Post #585393 15th Dec 2016 8:53pm
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Triple7



Member Since: 30 Aug 2015
Location: Down South
Posts: 69

United Kingdom 2004 Defender 90 Td5 SW Oslo Blue

Thanks GarethR for the valuable info

Post #585497 16th Dec 2016 7:02am
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Gareth



Member Since: 12 Dec 2011
Location: Bramhall
Posts: 547

England 2003 Defender 90 Td5 CSW Oslo Blue

No problem. Don't be put off by the fact that the Land Rover parts sticker on the box says Timing Belt Tensioner, it's not, it is actually the auxiliary drive tensioner. 1966 S2a 109 aka Betsy
1968 S2a 88 aka Bob
2002 TD5 90 CSW
2013 D4 HSE Lux
2014 Jaaaag F Type 3.0 Supercharged.

Post #585587 16th Dec 2016 3:36pm
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cobra_mark



Member Since: 17 Feb 2015
Location: West Yorks
Posts: 209

United Kingdom 2000 Defender 90 Td5 PU Caledonian Blue
Just changed my tensioner and pulleys

Sunday morning work out, just replaced the tensioner and pulley and the end pulley, the third pulley was done at the rebuild point, so a clean sweep.

Before



Click image to enlarge



After


Click image to enlarge




Click image to enlarge



[img:866:650]http://www

Post #602991 19th Feb 2017 11:30am
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Screbble



Member Since: 26 Apr 2015
Location: West Lancashire
Posts: 889

United Kingdom 2004 Defender 90 Td5 XS CSW Zambezi Silver

Good job and helpful photos Thumbs Up

As others have said, the pulleys, tensioner, and belt are relatively inexpensive, so worth keeping as spares even if the job doesn't need doing now.

On my to do list Thumbs Up

Post #603020 19th Feb 2017 2:39pm
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