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Belt tensioner bearings

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Trax99:
 :doh:

any of the mechanical clever clogs on this site know how much play there should be on the pulley bearings for the alternator/water pump drive belt tensioner?
I've got a horrible whiney, wirring noise going on that has slowly being getting worse over the last few weeks and I've gone throught the following:-

water pump - nope is still good
alternator - could be but they bloomin expensive and I don't want to change it without checking everything else  8-[
belt tensioner - it's holding tension but the pulley itself can be "rocked" from side to side in situ hence my question.

cheers

Disco-andy:
sounds like the normal belt tensioner thing, yes the barings can be changed, and is the cheapest option. try ebay for parts.

have a search round there are loads of post on this

Range Rover Blues:
There shouldn't be any noticeable play in it.  It could be on it's way out because the play will undoubtledly have caused the seals to wear out too.

KingWolf:
Here's a nice link to a step by step guide to changing the bearings.

hope it helps,

Mark.

http://www.reedx.net/landrover/maint/tensioner/index.htm

RichardM:
Don't leave it too long before you sort it out, if there is too much play then the belt can jump of the pulleys and shred itself.

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