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Author Topic: Auxillary belt tensioner pulley V6  (Read 493 times)

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artsoul_no1

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Auxillary belt tensioner pulley V6
« on: 24 November 2019, 11:08:15 »

Hi all

Trying to undo and replace auxillary bely tensioner pulley but nut is a bit stiff. Before I go to town on it can anyone confirm whether it is a standard or reverse thread

Thank you
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terry paget

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Re: Auxillary belt tensioner pulley V6
« Reply #1 on: 24 November 2019, 12:24:36 »

Standard.
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Re: Auxillary belt tensioner pulley V6
« Reply #2 on: 24 November 2019, 12:53:23 »

STD 15mm, remove, take seal out of pulley, clean bearing race, re-grease, refit. :y
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Doctor Gollum

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Re: Auxillary belt tensioner pulley V6
« Reply #3 on: 24 November 2019, 13:07:58 »

Use a half inch breaker rather than a ring spanner ;)

Refitting is bft against the tensioner spring.
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Nick W

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Re: Auxillary belt tensioner pulley V6
« Reply #4 on: 24 November 2019, 14:24:17 »

STD 15mm, remove, take seal out of pulley, clean bearing race, re-grease, refit. :y


if it's really bad then a brand new pulley costs under a tenner. You don't need to replace the entire assembly.


Idler failure is a big cause of multi-pulley belt faults, not just on Omegas, so the  few minutes it takes to loosen the belt, grease the idler bearing and refit the belt is worth adding to your service schedule.


Every other annual service or whenever you remove the belt for other work would be enough :y
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Eboy.com

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Re: Auxillary belt tensioner pulley V6
« Reply #5 on: 24 November 2019, 14:50:13 »

Standard thread, but the nut is self tightening, so if its been on a while, it needs a long lever.


Regreasing is OK as long as there is no wear, and its just dry.  If any play, notchiness, unevenness, replace the pulley.  If you go to a dealer, some argue its only available as part of the tensioner, but that's incorrect.


We have seen tensioner pulleys cause the aux belt to fail, and take out the cambelt, which in turn takes out the valves.
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artsoul_no1

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Re: Auxillary belt tensioner pulley V6
« Reply #6 on: 25 November 2019, 14:17:08 »

STD 15mm, remove, take seal out of pulley, clean bearing race, re-grease, refit. :y


if it's really bad then a brand new pulley costs under a tenner. You don't need to replace the entire assembly.


Idler failure is a big cause of multi-pulley belt faults, not just on Omegas, so the  few minutes it takes to loosen the belt, grease the idler bearing and refit the belt is worth adding to your service schedule.


Every other annual service or whenever you remove the belt for other work would be enough :y


Thanks Nick

It hasnt been off since you greased it a few years back. Got a new pulley and belt ready to go on

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artsoul_no1

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Re: Auxillary belt tensioner pulley V6
« Reply #7 on: 25 November 2019, 14:17:37 »

Thanks for all the replies much appreciated
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artsoul_no1

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Re: Auxillary belt tensioner pulley V6
« Reply #8 on: 27 November 2019, 10:28:21 »

All done. Thanks for everyones help much appreciated
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neil74

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Re: Auxillary belt tensioner pulley V6
« Reply #9 on: 27 November 2019, 13:36:40 »

My tensioner completely seized up and started to shred the belt.. but I was lucky because I had just pulled up outside the house and noticed the god awful noise it was making and switched off quickly.
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artsoul_no1

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Re: Auxillary belt tensioner pulley V6
« Reply #10 on: 27 November 2019, 13:43:39 »

Mine sounded like a fishing reel changed just in time I think
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Re: Auxillary belt tensioner pulley V6
« Reply #11 on: 27 November 2019, 13:57:50 »

I imagine it's a good idea to inspect & re-grease/replace the aux tensioner pulley/roller on all models of Omega, not just the V6.
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terry paget

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Re: Auxillary belt tensioner pulley V6
« Reply #12 on: 27 November 2019, 21:46:35 »

2.5 manual petrol estate
I suffered failure of the auxiliary belt pulley bearing driving from my son Jonny's wedding in Bristol to the reception in Dawlish Warren, south Devon, about ten years ago. It was a cold November night, I was about 5 miles short of my destination. Lights went dim, power steering failed, warning lights came on. Car still ran, but soon overheated. I managed to drive 2 miles further. I walked the last 3 miles to the reception.

AA recovered the car to my home 2 days later. I replaced pulley, bearing and belt.

I agree wite the above advice. Now I grease the bearing every 2 years.
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Migv6 le Frog Fan

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Re: Auxillary belt tensioner pulley V6
« Reply #13 on: 27 November 2019, 22:03:19 »

Had the same thing on my previous Omega several years ago. First time I ever used breakdown recovery to get home. Luckily no damage done apart from pulley breaking up and shredding the belt.
Reading this thread has made me decide to replace the pulley and belt on my current car at the next service, which is due in the next couple of months.
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Nick W

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Re: Auxillary belt tensioner pulley V6
« Reply #14 on: 28 November 2019, 10:15:56 »

I imagine it's a good idea to inspect & re-grease/replace the aux tensioner pulley/roller on all models of Omega, not just the V6.


it's worth doing whatever car(or machine) they're fitted to. Which is most these days, as ribbed belts are more efficient than vee, and make a more compact installation.
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Enceladus

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Re: Auxillary belt tensioner pulley V6
« Reply #15 on: 30 November 2019, 03:07:59 »

What's the best grease to repack these bearings? I think I might have used CV joint grease before with no issues, but I can't be sure.
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Re: Auxillary belt tensioner pulley V6
« Reply #16 on: 30 November 2019, 09:40:51 »

What's the best grease to repack these bearings? I think I might have used CV joint grease before with no issues, but I can't be sure.


Normal regular HMP grease as found in a grease gun. 

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Eboy.com

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Re: Auxillary belt tensioner pulley V6
« Reply #17 on: 01 December 2019, 11:08:16 »

I just use LM.  Namely, because its what I had.
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Kevin Wood

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Re: Auxillary belt tensioner pulley V6
« Reply #18 on: 01 December 2019, 11:52:08 »

I just use LM.  Namely, because its what I had.

Yes, anything thick and slippery, politicians excepted, should do the job!
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