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Thread: Got a belt squeak,thinking tensioner, but what about other idle pulley bearings? Reply to Thread
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  Topic Review (Newest First)
06-25-2018 02:15 PM
MrOneEyedBoh
Quote:
Originally Posted by djmaguire View Post
^^^ ...for a single alt arrangement. The dual alt tensioner has the BA suffix.

I only say it because I think that some of the confusion in past posts is due to lack of clarity between single and dual alt setups.
Good info!
06-25-2018 02:06 PM
djmaguire
Quote:
Originally Posted by MrOneEyedBoh View Post
Yeah I was about to post this:

All three:
1) Tensioner: 3C2Z-6B209-AA
2) Grooved Idler Pulley: 3C3Z-8678-EB
3) Smooth Idler Pulley: 7C3Z-8678-B
^^^ ...for a single alt arrangement. The dual alt tensioner has the BA suffix.

I only say it because I think that some of the confusion in past posts is due to lack of clarity between single and dual alt setups.
06-25-2018 01:58 PM
MrOneEyedBoh Yeah I was about to post this:

All three:
1) Tensioner: 3C2Z-6B209-AA
2) Grooved Idler Pulley: 3C3Z-8678-EB
3) Smooth Idler Pulley: 7C3Z-8678-B
06-25-2018 01:56 PM
djmaguire
Quote:
Originally Posted by MrOneEyedBoh View Post
... I guess if I pull the tensioner and replace that as a unit, I only have to buy bearings for one smooth and one ribbed pulley right?
I do believe that you are correct.

Might as well stick these here too...

3C2Z 6B209 AA / ---------------------------------------------------Belt Tensioner (Single Alternator)*
3C2Z 6B209 BA / ---------------------------------------------------Belt Tensioner (Dual Alternator)*
3C3Z 8620 DB / ----------------------------------------------------F Series Single Alternator Belt
3C3Z 8620 BC / ----------------------------------------------------F Series Dual Alternator Belt
3C3Z 8620 HB / ----------------------------------------------------F Series Aux Alternator Belt
3C3Z 8620 AB / ----------------------------------------------------E Series Single Alternator Belt
3C3Z 8620 BB / ----------------------------------------------------E Series Dual Alternator Belt
3C7Z 8620 AC / ----------------------------------------------------Excursion Alternator Belt
3C3Z 8678 EB/ ---------------------------------------------------- Idler Pulley

...from this:
https://www.powerstroke.org/forum/ge...rnational.html
06-25-2018 01:47 PM
MrOneEyedBoh
Quote:
Originally Posted by djmaguire View Post
I'm going to do this relatively soon. I'm just going to stick these posts here so that I have them for later. ...and in case they help anyone else. I made the attachments from the 2004 Service Manual.
Thanks I have the Ford manual on CD, but I dont see much on the pulleys. Do you know what bearings are used in EACH pulley? I guess if I pull the tensioner and replace that as a unit, I only have to buy bearings for one smooth and one ribbed pulley right?
06-25-2018 01:34 PM
djmaguire I'm going to do this relatively soon. I'm just going to stick these posts here so that I have them for later. ...and in case they help anyone else. I made the attachments from the 2004 Service Manual.

Quote:
Originally Posted by bismic View Post
...
Tensioner bearings (both) and smooth idler pulley bearings: 6203-2RS
Grooved Idler bearings: 6303-2RS
McMaster-Carr
Quote:
Originally Posted by Lilpooh View Post
For those of us that have dual alternator set ups, the above post is correct for the primary (main) belt/pulleys. The pulleys for the dual alternator set up all use the 6203-2Rs.
Quote:
Originally Posted by portcity_gt View Post
I just want to add to this thread, in the above post to me it reads like you need three small (6203) bearings and one large (6303) bearing. While that may be the case on a dual alternator truck, on my single alternator truck it was two each 6203 and 6303 to replace all tentioner and idler pully bearings.
06-25-2018 01:26 PM
MrOneEyedBoh Yeah I think Its 6203 and 6202 ( 2 each, but I dont know... ) but Im replacing the tensioner and thats one or two bearings that I wont need. Thus I dont want to buy a bearing and not need it...

Ive read somewhere that Gates updated the pulley to be better, and now Im thinking about just buying them from Rock Auto..
06-25-2018 05:58 AM
G8orFord I think @ZMANN had a list somewhere.
06-25-2018 02:47 AM
repalmer Sorry, I was thinking about the pulley assembly. I just replaced the bearing in one of my pulleys, bearing part #6203. I think it was on the tensioner though, so not sure if it's the same. Might want to pull yours off and get part number then reinstall till new ones come in
06-25-2018 02:00 AM
MrOneEyedBoh They won't sell just the bearings. I'd have to buy them from McMaster etc
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