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Unread 06-27-2012, 03:57 PM   #1
RVD56
Registered User
2002 KJ Liberty 
 
Join Date: May 2011
Location: Harper Woods, MI
Posts: 14
Serpentine Belt

Need to replace my serp belt, but the parts store by me says there are 2 belt size options and I cannot find any info on this. Both belts have mostly the same specs except the outside diameters are different. I will list them below and if anyone has any info on which is for a 2002 Liberty Sport 3.7L with A/C, it would be appreciated. Maybe one size for no a/c, and one for with a/c???

Thanks!
Rob

Belt Option 1:
Rating: OE Quality (OEQ)
Section: K
Number of Ribs: 6
Top Width (in): .807
Top Width (mm): 20
Outside Circumference (in): 86.835
Outside Circumference (mm): 2206
With 86-3/8 Inch Belt Outside Circumference


Belt Option 2:
Rating: OE Quality (OEQ)
Section: K
Number of Ribs: 6
Top Width (in): .807
Top Width (mm): 20
Outside Circumference (in): 87.91
Outside Circumference (mm): 2233
With 87-1/4 Inch Belt Outside Circumference

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Unread 06-27-2012, 07:26 PM   #2
tjkj2002
Registered User
2002 KJ Liberty 
 
Join Date: Dec 2009
Location: Colorado
Posts: 8,254
Buy your serp belt at the dealership,it's the EPDM belt that is the best out there and yes it's pricey.Don't forget to put in a new tensioner also,the whole assembly,as the internal spring wears out just like the belt.
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'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
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Unread 06-28-2012, 07:56 AM   #3
jp7794
Registered User
2006 KJ Liberty 
 
Join Date: Jul 2008
Location: MO
Posts: 351
Quote:
Originally Posted by RVD56 View Post
Need to replace my serp belt, but the parts store by me says there are 2 belt size options and I cannot find any info on this. Both belts have mostly the same specs except the outside diameters are different. I will list them below and if anyone has any info on which is for a 2002 Liberty Sport 3.7L with A/C, it would be appreciated. Maybe one size for no a/c, and one for with a/c???

Thanks!
Rob

Belt Option 1:
Rating: OE Quality (OEQ)
Section: K
Number of Ribs: 6
Top Width (in): .807
Top Width (mm): 20
Outside Circumference (in): 86.835
Outside Circumference (mm): 2206
With 86-3/8 Inch Belt Outside Circumference


Belt Option 2:
Rating: OE Quality (OEQ)
Section: K
Number of Ribs: 6
Top Width (in): .807
Top Width (mm): 20
Outside Circumference (in): 87.91
Outside Circumference (mm): 2233
With 87-1/4 Inch Belt Outside Circumference
Your numbers don't make sense. 86 3/8" should be 86.375 and 87 1/4" should be 87.250. I replaced mine with this belt and idler pulley for just under $70. I did the math and the circumference of the belt is 87.292".
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Unread 06-28-2012, 02:05 PM   #4
RVD56
Registered User
2002 KJ Liberty 
 
Join Date: May 2011
Location: Harper Woods, MI
Posts: 14
Quote:
Originally Posted by jp7794 View Post
Your numbers don't make sense. 86 3/8" should be 86.375 and 87 1/4" should be 87.250. I replaced mine with this belt and idler pulley for just under $70. I did the math and the circumference of the belt is 87.292".
Numbers are theirs, not mine. Copied/Pasted off of their website. I will replace both the belt and tension pulley. Thanks to you both!
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Unread 06-28-2012, 02:55 PM   #5
tjkj2002
Registered User
2002 KJ Liberty 
 
Join Date: Dec 2009
Location: Colorado
Posts: 8,254
Quote:
Originally Posted by RVD56 View Post
Numbers are theirs, not mine. Copied/Pasted off of their website. I will replace both the belt and tension pulley. Thanks to you both!
Just make sure you replace the whole tensioner and not just the pulley.Also make sure you get a EPDM belt,only OEM(for '02 KJ's) and Gates make EPDM belts for the KJ.
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'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
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