Serp Belt squeek

[fpchief]

On my 2001 M1097a2, 6.5....after recovery of it non-running I replaced or put on a new alt, ps pump, both top idler pulleys, water pump, and new belt.

Now I have a belt squeak that I can not find. The intermittent squeak does change with RPM. I have the belt off now and there is no squeal with belt off so 100% sure it is the belt.

What I think is on the top idlers, it is flat on flat and for some reason it is squeaking. Driving me nuts and want to find the problem.

The grooved idler and belt tensioner are original and feel tight.

The only pulley that doesn't really spin freely is one of the top smooth idlers (if they are even idlers)

 

[frank8003]

How many hours on that setup so far since you fixed it?

 

[fpchief]

6-10 maybe

 

[fpchief]

Here is a vid...belt off no squeak of course. Only pulley that does not turn very freely is the passenger side top idler pulley (or whatever those top pulleys are called)....

I do think there is a good chance it is coming from the belt tensioner.

 

[Retiredwarhorses]

Start swapping pulleys..start with the large one “.AC delete” pulley..l

 

[frank8003]

Do not use belt dressing on EDPM belts
The constant velocity tensioner is suspect, change out that first.
The tensioner very common to fail on engines, it will fail, just don't know when.
Just put a new one. very common failure, my engines, Police engines, all types, engines that actually do run for a couple of whiles..

 

[fpchief]

Is there a SOS local? If I remember correctly I looked at replacing it when I had the front end torn apart and I didn't due to it being expensive...

 

[fpchief]

Start swapping pulleys..start with the large one “.AC delete” pulley..l

Yessir! I kinda figured it may lead to that. Got a couple checks to make this evening to hopefully verify it is a pulley and not the belt.

 

[dmetalmiki]

Try 'Talcum Powder'.
Simple quick non expensive or time consuming fix.

 

[Retiredwarhorses]

Yessir! I kinda figured it may lead to that. Got a couple checks to make this evening to hopefully verify it is a pulley and not the belt.

Has the belt been replaced since you got the truck?

 

[fpchief]

Yep. Brand new. All it had on front of the motor was the grooved idler, smooth idlers, and tensioner. All else up front is new Including water pump.

 

[fpchief]

Try 'Talcum Powder'.
Simple quick non expensive or time consuming fix.

I will give it a shake!

 

[Retiredwarhorses]

Here is a vid...belt off no squeak of course. Only pulley that does not turn very freely is the passenger side top idler pulley (or whatever those top pulleys are called)....

I do think there is a good chance it is coming from the belt tensioner.

Just a note, but your serp setup requires the tensioner that has no lip on the pulley, Your setup uses
a completely smooth idler all the way across

 

[fpchief]

Just a note, but your serp setup requires the tensioner that has no lip on the pulley, Your setup uses
a completely smooth idler all the way across

Yessir, smooth no lip tensioner, two smooth on top and the grooved compressor delete pulley.

 

[fpchief]

Continuing effort to find my squeak....the squeak does go away for a bit if I get belt wet....used stethoscope and found no noise in any pulley area. I do believe it is actually just the belt...is it plausible that the paint that was put on there at GP could be causing a squeak??

 

[fpchief]

Do not use belt dressing on EDPM belts
The constant velocity tensioner is suspect, change out that first.
The tensioner very common to fail on engines, it will fail, just don't know when.
Just put a new one. very common failure, my engines, Police engines, all types, engines that actually do run for a couple of whiles..

What is the deal with belt dressing on EDPM belts?

 

[frank8003]

What is the deal with belt dressing on EDPM belts?

Why Belt Dressing Is Not a Solution To Quiet a Noisy Belt

If you do decide to use belt dressing, then be prepared to eventually hear the belt noise again.

www.daycoproducts.com

Do not use belt dressing on EDPM belts - Google Search