Tensioner
Thread Starter
Drifting
Joined: Jun 2010
Posts: 1,944
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From: CT
Tensioner
I cant seem to find how much tension should be on the stock belt tensioner.Yes I used the SEARCH feature. Can I measure it by using a torque wrench on the bolt? Mine moves with about 15 ftlb's
Race Director
Joined: Dec 2005
Posts: 11,858
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From: God's Country, ID
Specs for LS2: Tighten the accessory drive belt tensioner bolts to 50 Nm (37 ft. lbs.) starting with the lower bolt first.
Last edited by DSOMC6; Jun 8, 2011 at 02:01 AM.
Melting Slicks
Joined: Jan 2005
Posts: 2,326
Likes: 5
From: louisville "derby city" kentucky
look on the tensioner body. there is a scale markings. on the belt arm is a mark. it should be within the scale. that is all of the information i have ever been able to gather on tensioners. a good rule of thumb is when replacing the belt, check and see it it is off the scale. if so, replace it. 
Race Director
Joined: Jan 2005
Posts: 10,924
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From: Daytona Beach FL
There's no spec listed in the Service Manual.
The Service Manual says:
So....no spec on how much tension the tensioner should be applying to the belts. Just remove the belt and check the tensioner for smooth and free movement.
Bob
The Service Manual says:
Drive Belt Tensioner Diagnosis
Notice: Allowing the drive belt tensioner to snap into the free position may result in damage to the tensioner.
Important: When the engine is operating, the belt tensioner arm will move. Do not replace the belt tensioner because of movement in the belt tensioner arm.
1. Remove the drive belt.....
2. Position a hex-head socket on the belt tensioner pulley bolt.
3. Move the belt tensioner through its full travel.
4. If any binding is observed, replace the drive belt tensioner.....
5. Install the drive belt....
Notice: Allowing the drive belt tensioner to snap into the free position may result in damage to the tensioner.
Important: When the engine is operating, the belt tensioner arm will move. Do not replace the belt tensioner because of movement in the belt tensioner arm.
1. Remove the drive belt.....
2. Position a hex-head socket on the belt tensioner pulley bolt.
3. Move the belt tensioner through its full travel.
- The movement should feel smooth.
- There should be no binding.
- The belt tensioner should return freely.
4. If any binding is observed, replace the drive belt tensioner.....
5. Install the drive belt....
So....no spec on how much tension the tensioner should be applying to the belts. Just remove the belt and check the tensioner for smooth and free movement.
Bob
