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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?
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.
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.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Originally Posted by mikex7
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
As soon as I hear someone say "tensioner" I'm going straight to either one of the two spring-loaded units (which is what makes them "tensioners"). One is six-groove (alternator, power steering and water pump) and the other is 4-groove (AC compressor)
Btw, the pulley alone can be easily replaced on the "main" tensioner without replacing the entire assembly. Cheaper too.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
[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?
Originally Posted by mikex7
Are both pulleys the same?
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.
05-30-2015, 10:58 PM
Are there two idler pulleys or just one? Replacing belt/tensioner/pulley
