Are there two idler pulleys or just one? Replacing belt/tensioner/pulley
#1
Burning Brakes
Thread Starter
Are there two idler pulleys or just one? Replacing belt/tensioner/pulley
So I have an obnoxious squeal on load and my local shop diagnosed my tensioner needing replacement. Easy enough, but since Ill be down there I also want to swap the belt for a gatorback and change the idler pulley. First time doing this on a vette but you gotta learn somehow. I found this write up which seems easy enough: http://www.superchevy.com/how-to/cor...-belt-install/
Ive been trying to find an idler pulley to buy and each one says its the A/C idler pulley. Is that the same thing? Excuse my ignorance. This is the part I found that looks identical to the pulley referenced in the link above: http://www.ebay.com/itm/like/371138679635?lpid=82&chn=ps
If I buy that idler pulley, the tensioner, and the belt, should I be good to go?
Alright.. according to this image there are two:. Is #38240 for the main drive belt or 38241?
Ive been trying to find an idler pulley to buy and each one says its the A/C idler pulley. Is that the same thing? Excuse my ignorance. This is the part I found that looks identical to the pulley referenced in the link above: http://www.ebay.com/itm/like/371138679635?lpid=82&chn=ps
If I buy that idler pulley, the tensioner, and the belt, should I be good to go?
Alright.. according to this image there are two:. Is #38240 for the main drive belt or 38241?
#2
Team Owner
Which "tensioner" did this shop say needs replacing?
There are two idlers (that closely resemble one another) and two tensioners, all 4 of which carry different part numbers.
The "main" serpentine belt has 6-grooves and the AC belt has 4 grooves.
Btw, in your picture 38240 is the "main" idler.
There are two idlers (that closely resemble one another) and two tensioners, all 4 of which carry different part numbers.
The "main" serpentine belt has 6-grooves and the AC belt has 4 grooves.
Btw, in your picture 38240 is the "main" idler.
Last edited by LoneStarFRC; 05-30-2015 at 11:22 PM.
#3
Team Owner
The so-called "main" idler is GM part # 12564401
The so-called "main" tensioner is GM part # 12559325
The so-called "main" tensioner is GM part # 12559325
#4
Burning Brakes
Thread Starter
Which "tensioner" did this shop say needs replacing?
There are two idlers (that closely resemble one another) and two tensioners, all 4 of which carry different part numbers.
The "main" serpentine belt has 6-grooves and the AC belt has 4 grooves.
Btw, in your picture 38240 is the "main" idler.
There are two idlers (that closely resemble one another) and two tensioners, all 4 of which carry different part numbers.
The "main" serpentine belt has 6-grooves and the AC belt has 4 grooves.
Btw, in your picture 38240 is the "main" idler.
Thanks for the help guys
Last edited by mikex7; 06-01-2015 at 04:17 PM.
#5
Team Owner
They said was "alternator tensioner". I recently had my alternator replaced so I said which are you referring to, and he said there is only one tensioner for the main belt. So I guess I might be a little confused. Its my undertanding that theres a pulley on the alternator.. Maybe he was referring to that? Dont know. If a mechanic told you "alternator tensioner", would you think that was the alternator pulley or the main tensioner? I guess I could just call them but its been a few weeks so the memory might not be fresh.
Thanks for the help guys
Thanks for the help guys
Btw, the pulley alone can be easily replaced on the "main" tensioner without replacing the entire assembly. Cheaper too.
HTH
#6
Team Owner
DORMAN Part # 419604
FOUR SEASONS Part # 45996
GATES Part # 38008
HAYDEN Part # 5996
DAYCO Part # 89015
ACDELCO Part # 1540486
Any one of these will work. Pick one. I like Gates, Dayco or Delco. My preference.
www.rockauto.com
FOUR SEASONS Part # 45996
GATES Part # 38008
HAYDEN Part # 5996
DAYCO Part # 89015
ACDELCO Part # 1540486
Any one of these will work. Pick one. I like Gates, Dayco or Delco. My preference.
www.rockauto.com
#7
Burning Brakes
Thread Starter
DORMAN Part # 419604
FOUR SEASONS Part # 45996
GATES Part # 38008
HAYDEN Part # 5996
DAYCO Part # 89015
ACDELCO Part # 1540486
Any one of these will work. Pick one. I like Gates, Dayco or Delco. My preference.
www.rockauto.com
FOUR SEASONS Part # 45996
GATES Part # 38008
HAYDEN Part # 5996
DAYCO Part # 89015
ACDELCO Part # 1540486
Any one of these will work. Pick one. I like Gates, Dayco or Delco. My preference.
www.rockauto.com
#8
Team Owner
[QUOTE=mikex7;1589756350]Thanks, I appreciate that. I looked up the Delco and its saying its the A/C pulley.
ACDELCO Part # 1540486 {#19190157} Professional
Accessory Drive
$13.32
Show me where this listing says A/C pulley. Does it have 6 grooves like I said?
Read post #2 again.
If you are looking for the main tensioner (which, as I said, is for the alternator, power steering, etc) you can buy the assembly OR (as I said) buy just the pulley for it.
ACDELCO Part # 1540486 {#19190157} Professional
Accessory Drive
$13.32
Show me where this listing says A/C pulley. Does it have 6 grooves like I said?
Read post #2 again.
If you are looking for the main tensioner (which, as I said, is for the alternator, power steering, etc) you can buy the assembly OR (as I said) buy just the pulley for it.