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cam belt tensioning problem on a 84 944
I followed the directions for adj. timing belt. When I set belt to specifications and turn engine to two complete turns clockwise and one and a half teeth counter clockwise,belt is loose on the long run of the belt.Clockwise belt is set at the right specifications.Anybody know how to correct this problem?HK
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11-04-2008, 03:30 AM
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Join Date: Mar 2007
Location: Huntsville, Al.
Posts: 228
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Which procedure and which tensioning gauge are you using? If you are turning the engine counterclockwise at the crank, the slack should be in the long run. If you are turning the engine counterclockwise at the cam gear, the slack will be on the opposite side of the long run.
A.J.
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11-04-2008, 04:19 AM
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I am turning the engine by the crankshaft and I`M using a krikit gauge.Should there be slack in the long run of the belt,when you counter clockwise the engine?Should I keep trying to adjust the belt to get the slack out?HK
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11-04-2008, 06:46 AM
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Join Date: Mar 2007
Location: Huntsville, Al.
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You should take your tension measurement with the slack in the long run of the belt between the cam shaft sprocket and the sprocket on the crank. Turning the engine counterclockwise (1 and 1/2 teeth on the cam sprocket, approx 10 degrees) by rotating the crank will get you there. I have the cricket and the Arnnworx tool and have used them both. I found the cricket difficult to use for setting the cam and balance belt. Just my $.02
Good Luck, A.J.
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11-04-2008, 07:45 AM
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Join Date: Nov 2003
Location: Calgary, AB
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The whole point of the procedure is to get the belt worked into position, properly seated on the gears, then put all the tension on the long run.
Thats why it is 2 turns, then just a hair back. You're doing it right, and if you take all the slack out your belt will whine line crazy, demolish the rollers/tensioners and snap in a rather short time.
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11-04-2008, 08:25 AM
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Automotive Necromancer
Join Date: Nov 2006
Location: Beantown, MA
Posts: 1,544
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No whining
A properly tensioned new cam belt will not whine. the new Bal shaft belt tends to whine just a bit. If it howls at you, it it too tight. you want a half twist or so on the longest part of the belt. (I don't use tensioner tools, they confuse me, I go by feel)
the upper tensioner pulley on the Bal belt should just "skim" the belt.
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11-06-2008, 07:42 PM
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Thanks guys,you helped me a lot.Harry
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11-17-2008, 03:40 AM
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