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Author Topic: Aux belt tensioner bearing change?  (Read 1468 times)

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The Barge Captain

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Aux belt tensioner bearing change?
« on: 21 December 2006, 16:40:46 »
Has anybody ever replaced the bearing in the auxillary drive belt tensioner ? Mine sounds slightly rough and i have a new correct size bearing lying about in my workshop, only it seems a bit reluctant to drift out, and i don't want to break the pulley trying.
Is it replaceable?
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Bo Bo

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Re: Aux belt tensioner bearing change?
« Reply #1 on: 21 December 2006, 16:43:28 »
Have you tried re-greasing it?
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Andy B

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Re: Aux belt tensioner bearing change?
« Reply #2 on: 21 December 2006, 16:48:52 »
Quote
Has anybody ever replaced the bearing in the auxillary drive belt tensioner ? Mine sounds slightly rough and i have a new correct size bearing lying about in my workshop, only it seems a bit reluctant to drift out, and i don't want to break the pulley trying.
Is it replaceable?
A proper press might be better or various suitably sized sockets and a large vice tp press it out.
I did as BoBo suggests though. I carefully prised the seal from the bearing and repacked it, it was practically dry.
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Marks DTM Calib

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Re: Aux belt tensioner bearing change?
« Reply #3 on: 21 December 2006, 16:50:48 »
The plastic is moulded around the bearing so it cant be removed.....repack it if dry, replace if rough....not hugely pricey new (25 quid?)
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Andy B

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Re: Aux belt tensioner bearing change?
« Reply #4 on: 21 December 2006, 17:15:26 »
Quote
The plastic is moulded around the bearing so it cant be removed.....
Surely that depends how hard you hit it or how much pressure you use to press it out. ;)



Quote
....not hugely pricey new (25 quid?)
Considering that just the bearing will be £10 at the most it's not hugely cheap either.
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The Barge Captain

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Re: Aux belt tensioner bearing change?
« Reply #5 on: 21 December 2006, 18:13:22 »
Already got a bearing 6203 just need to try and fit it. Never keen on prising seals off of bearings though.
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Andy B

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Re: Aux belt tensioner bearing change?
« Reply #6 on: 21 December 2006, 18:23:24 »
Quote
......
 Never keen on prising seals off of bearings though.
Just don't bend it while you're removing it. They usually go back in quite easily though.
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Matchless

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Re: Aux belt tensioner bearing change?
« Reply #7 on: 22 December 2006, 08:52:44 »
Mark and I have just spent a week rebuilding an engine after the aux tensioner pulley failed...plastic outer broke up, shredded the aux belt and a flailing bit of belt then got into the cambelt cover and derailed the cambelt. Result...bent valves.

The bearing cannot be changed, the plastic pulley is moulded around it.
I used to ease out the seals, wash out bearing and regrease. After the recent experience I would fit a new pulley....its much cheaper and easier than a top-end rebuild.
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The Barge Captain

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Re: Aux belt tensioner bearing change?
« Reply #8 on: 24 December 2006, 15:02:46 »
Seals prised out quite easily.  Bearing dry but not rough, so regreased and rebuilt.
Your experience sounds like a terrible piece of bad luck mate  :(
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