Jeep KJ 3.7L 2005

[Peter M]

Greetings from the UK,

Looking for help in obtaining the bolt size and type for the belt tensioner. I was going to replace the tensioner and belt only to find its rounded, got a mechanic coming Thursday to sort this but need to get replacement bolt.

Any help will be greatly appreciated.

 

[Gyro]

3.7 gas Part # 06504930AA size M10x1.5x70
2.8 diesel Part # 05015612AB
Gyro

 

[Peter M]

Hi Gyro,

much appreciated, thank you.

P

 

[Billwill]

I believe on the CRD the Tensioner Pulley Bolt is a Left Hand Thread....or one of the other pullies has it!

I have not personally changed the Serpentine Belt on my CRD...had the Dealers replace it and the cam belt every six years!

Do not know if the Gassers have a Left-Hand-Thread Bolt on the Tensioner but that would be a good reason for a rounded-off Bolt Head!

I will let the Experts on the 3.7 gasser here chip in.!

 

[Peter M]

I believe on the CRD the Tensioner Pulley Bolt is a Left Hand Thread....or one of the other pullies has it!

I have not personally changed the Serpentine Belt on my CRD...had the Dealers replace it and the cam belt every six years!

Do not know if the Gassers have a Left-Hand-Thread Bolt on the Tensioner but that would be a good reason for a rounded-off Bolt Head!

I will let the Experts on the 3.7 gasser here chip in.!

 

[Peter M]

Thanks for that information, I will also purchase left hand thread bolts to be on the safe side, better to be prepared.

P

 

[Billwill]

Thanks for that information, I will also purchase left hand thread bolts to be on the safe side, better to be prepared.

P

No let me look up the procedure for replacing the Serpentine bolt in the Manuals...they do point out when a bolt is a Left-Hand-Thread.
You need to get the correct strength bolt in any case and these Left-Hand Thread bolts are hard to find.

 

[Billwill]

Ok the Service Manual for the 3.7 Gasser makes no mention of the mounting bracket being held on by a Left-Hand-Drive bolt for the tensioner assembly.

Go to section 7 Cooling Accesories for the 2005 3.7 Service manuals.

The tensioner itself is spring-loaded and must not be taken apart!

The idler pulleys are stated as being Left-Hand-Threads.

www.colorado4wheel.com/manuals/Jeep/KJ/