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gadgit's Avatar
 
Join Date: Dec 2005
Location: england
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Exclamation Balance belt tensioner.

I've been checking out the balance belt and I'm confused ?

Having checked the tension, the instructions say the tensioner should be returned to its original position by the use of a drill bit. I understand the logic of this, but.

My balance belt tensioner has a clean drilled hole offset for adjustment. As its not slotted if I put it back to its original position, I have not made any adjustment at all.

So, should it be slotted like the adjacent idle roller.

gadgit.
Old 01-03-2006, 02:23 PM
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Is your car equipped with an automatic tensioner or is it manually adjusted? What year is your car?

Speedy
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Old 01-03-2006, 03:16 PM
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Turn the balance belt tensioner clock wise to tension the belt. A good rule of thumb is to allow a 90 degree twist in the longest run. You may have to remove the large smooth roller to do this. You need to hold the tensioner in place while you tighten the 17 mm self locking nut.

Any time you replace the timing belt you should replace the balance belt too. I've posted a graphic of where to set the balance shafts many times. Search for it. It's much better than the Haynes or the one on www.clarks-garge.com
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Hugh - So Cal 83 944 Driver Person
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When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
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Old 01-03-2006, 06:56 PM
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Its an S2 89.

I understand all the above info and am happy how to adjust the balance belt. Its got an auto adjuster on the Cam belt, and yes I know its not automatic.

The point is, why does it say that you should return the balance belt adjuster back to the identical place (using a drill bit to get it exactly) if this does not do any good for adjustment. you surely can't have it in the same place if you have adjusted it.

I could understand it if the adjuster was slotted and not drilled clean. you could then adjust the tightness of the belt but still return it to the same place.

My question is, should it be slot drilled like the idler so it can move in any direction. I just want to be sure that someone hasn't fitted the wrong adjuster.

Yep, Socal, I've turned it clockwise to adjust it and am happy I.ve got it right.

I suppose the question is, does anyone bother to use a drill bit between the adjuster roller and the right hand pulley.

See what I mean??
Old 01-04-2006, 01:59 PM
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You don't use paint to mark the belts and you don't use any drill bits. I don't know what you are reading from but ignore it!

Here is the correct diagram for setting the balance shaft pullies and the belt:

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Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 01-04-2006, 02:28 PM
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Thanks Socal, just what I thought !!

Its in the haynes 944 manual, perhaps that answers the question?
Old 01-05-2006, 03:04 AM
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The instructions in the Haynes manual are for reusing the old belt, and setting the tension approximately without a 9201 or Kricket or other tool. If you put on a new belt, just set the tension and ignore the whole drill bit thing.
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Old 01-05-2006, 09:01 AM
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If you have taken the pulleys off of the balance shafts be darn sure you have them back on correctly. Note the position of the key ways.
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Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 01-05-2006, 09:49 AM
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Thanks chaps, I'm not that brave yet to tackle taking the pulleys off!!

The old girl is off to the specialist tommorow to have a look at the clutch. Seems it might won't a new one as its all sloppy around the clutch area. It might be in the get you home mode ? according to how I explained it to them.

Apparently they are going to check the clutch under the cover and see if the shaft turns freely back and forth. this will meen the rubber clutch centre is shot!

lucky for me I spotted this before I bought it and adjusted the price, just in case, so no problem.

thanks for the usual great help.
Old 01-05-2006, 10:24 AM
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