D5 (2005 on) - Cambelt Failures

Jinxie · Jan 14th, 2018, 19:01

I'm totally unconvinced that changing the design from cam chains to cam belts was a good idea at all, the more I read about the subject!

Elsewhere on this site I read a report from someone who said that their clutch failing caused the air-con pump belt to fail which took out the cam belt and consequently the entire engine was scrap. How does this occur? I mean, why would the clutch failing result in the air-con belt breaking??

Since I'm about to change the cam belt on mine, I guess I should do the aux belt at the same time, plus both tensioners and the water pump I suppose. I'm hoping there's just two belts in total on this engine, but can anyone confirm that?

Thanks!

S60D5-185 · Jan 14th, 2018, 19:09

Quote:

Originally Posted by Jinxie

I'm totally unconvinced that changing the design from cam chains to cam belts was a good idea at all, the more I read about the subject!

Elsewhere on this site I read a report from someone who said that their clutch failing caused the air-con pump belt to fail which took out the cam belt and consequently the entire engine was scrap. How does this occur? I mean, why would the clutch failing result in the air-con belt breaking??

Since I'm about to change the cam belt on mine, I guess I should do the aux belt at the same time, plus both tensioners and the water pump I suppose. I'm hoping there's just two belts in total on this engine, but can anyone confirm that?

Thanks!

They are not talking about the Clutch in the transmission but the Clutch Pulley on the Air Con Pump.

The Alternator pulley also has a freewheel device in it which must be checked when doing the Aux belt.

Rooster · Jan 14th, 2018, 21:44

I bought my xc90 with a knackered engine after aux belt failure,

This was down to previous owners neglect though as alternator freewheel pully had seized and belt was flapping about and this was ignored unit plastic idler pully failed due to stress and threw belt off taking timing belt with it,

If belts are looked after and noises are not ignored then they are good for hundreds of thousands of miles

Jinxie · Jan 16th, 2018, 22:38

Having now had the chance to whip out the right side wheel arch protector, it seems my particular engine boasts 3 belts instead of the 2 I'd been expecting. In addition to the timing belt there are 2 anciliary belts to content with, which is a pain. I've also noted that there's a huge ally casting (partly acting as a head-steady) not just squished up against, but squished into (by design for some reason) the timing belt cover, making removal of same extremely difficult. Haynes manual makes no mention of it. I think if I don't get this casting off and out of the way I will not have enough access to change the timing belt.

Mine's a D5422T and there's a bloke on YT changing his timing belt, also on a D5422T but he doesn't have that dirty great casting to contend with for some reason. :-/

Scooser · Jan 16th, 2018, 23:01

Quote:

Originally Posted by Jinxie

Having now had the chance to whip out the right side wheel arch protector, it seems my particular engine boasts 3 belts instead of the 2 I'd been expecting. In addition to the timing belt there are 2 anciliary belts to content with, which is a pain. /

Presume one is the aux belt and the other is the aircon stretch belt, if it’s anything like my 2009 D5 engine.

cheshired5 · Jan 17th, 2018, 00:01

Quote:

Originally Posted by Jinxie

Mine's a D5422T and there's a bloke on YT changing his timing belt, also on a D5422T but he doesn't have that dirty great casting to contend with for some reason. :-/

There's no such D5 engine code so do you have a link to the video?

Jinxie · Jan 17th, 2018, 00:57

Quote:

Originally Posted by cheshired5

There's no such D5 engine code so do you have a link to the video?

Here you go: https://www.youtube.com/watch?v=NOQse-cekKc

Cheers.

Jinxie · Jan 17th, 2018, 01:04

Quote:

Originally Posted by Jinxie

Here you go: https://www.youtube.com/watch?v=NOQse-cekKc

Cheers.

Sorry, I typo'd the wrong code in that earlier post. Mine is actually the D5244T, still the same number designation as the bloke in the video is working on, though.

cheshired5 · Jan 17th, 2018, 08:57

Yes it's a D5244T in that video but from your description of a third belt, yours isn't a D5244T.

Yours will be a D5244Tx ('x' denotes an additional single or double digit number).

Jinxie · Jan 17th, 2018, 11:14

That's all it says on the timing belt cover, though; nothing after the last 'T'

I'm attaching a couple of pictures showing the heafty alloy casting that's making the cover removal impossible at present. (see next post)

Jan 14th, 2018, 19:01	#1
Jinxie Member Last Online: Apr 12th, 2020 22:21 Join Date: Jan 2017 Location: Douglas View Photos By: Jinxie	Cambelt Failures I'm totally unconvinced that changing the design from cam chains to cam belts was a good idea at all, the more I read about the subject! Elsewhere on this site I read a report from someone who said that their clutch failing caused the air-con pump belt to fail which took out the cam belt and consequently the entire engine was scrap. How does this occur? I mean, why would the clutch failing result in the air-con belt breaking?? Since I'm about to change the cam belt on mine, I guess I should do the aux belt at the same time, plus both tensioners and the water pump I suppose. I'm hoping there's just two belts in total on this engine, but can anyone confirm that? Thanks!

Jan 14th, 2018, 21:44	#3
Rooster Speed freak Last Online: Apr 3rd, 2020 22:04 Join Date: Nov 2003 Location: Yorkshire	I bought my xc90 with a knackered engine after aux belt failure, This was down to previous owners neglect though as alternator freewheel pully had seized and belt was flapping about and this was ignored unit plastic idler pully failed due to stress and threw belt off taking timing belt with it, If belts are looked after and noises are not ignored then they are good for hundreds of thousands of miles __________________ 04 XC90 D5 --- Big bus 00 pug 306HDi --- Run about 88 pug 309GTi --- Project track car 07 CB600 Hornet --- 2 wheel fun

Jan 17th, 2018, 08:57	#9
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	Yes it's a D5244T in that video but from your description of a third belt, yours isn't a D5244T. Yours will be a D5244Tx ('x' denotes an additional single or double digit number). __________________ 2002 S60 SE D5 Manual 209000 miles

Jan 17th, 2018, 11:14	#10
Jinxie Member Last Online: Apr 12th, 2020 22:21 Join Date: Jan 2017 Location: Douglas View Photos By: Jinxie	That's all it says on the timing belt cover, though; nothing after the last 'T' I'm attaching a couple of pictures showing the heafty alloy casting that's making the cover removal impossible at present. (see next post) Last edited by Jinxie; Jan 17th, 2018 at 11:50.

Jan 16th, 2018, 22:38	#4
Jinxie Member Last Online: Apr 12th, 2020 22:21 Join Date: Jan 2017 Location: Douglas View Photos By: Jinxie	Having now had the chance to whip out the right side wheel arch protector, it seems my particular engine boasts 3 belts instead of the 2 I'd been expecting. In addition to the timing belt there are 2 anciliary belts to content with, which is a pain. I've also noted that there's a huge ally casting (partly acting as a head-steady) not just squished up against, but squished into (by design for some reason) the timing belt cover, making removal of same extremely difficult. Haynes manual makes no mention of it. I think if I don't get this casting off and out of the way I will not have enough access to change the timing belt. Mine's a D5422T and there's a bloke on YT changing his timing belt, also on a D5422T but he doesn't have that dirty great casting to contend with for some reason. :-/

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