Squealing belt... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Army_Dude · 01-16-2006, 05:10 PM

Whats the best way to diagnose which belt is squealing? I got one that is driving me nuts. They all look good. Not too loose or too tight.

Prerunner1982 · 01-16-2006, 05:48 PM

did you check the underside and see if its glazed or anything?

piecesparts · 01-16-2006, 06:14 PM

Usually it is not that hard, just rev the motor at the carb and it should become obvious. If it is doing it all of the time, then get a bar of soap, the small bars from a hotel works best. As you look for the noise stick the bar up against the rotating belt and coat the inside, the squeal will go away or change tune. If you are one that has problems doing this then use a spray belt dressing to find the squeal.

LOHRTBT · 01-17-2006, 02:11 PM

I have always used a Crayola crayon!

If you let it touch the side of the belt or the face of it..use black so you dont have a colored belt haha. It will quieten immediately and that will tell you which belt it is.

1976K5CHALET · 01-17-2006, 03:11 PM

If it isn't a glazed belt...and at the worst case...ensure the top of the belt is flush with the top of the pulley groove...as it should be as the pulley groove is designed for (x) series belts (15) i believe. I couldn't cure my squeel even with quality goodyear gator back belts so i bought new pulleys and it cured the issue.

Doug W.

jimfulco · 01-17-2006, 11:10 PM

Get out the WD-40 & give a little pop to each belt while the motor's running, and the squeaky one will quiet down.

hotrodhomi · 01-18-2006, 11:12 AM

Replace them all. They are cheap.

bmartin9122 · 01-18-2006, 11:54 PM

Yup... I just replaced all three for only $40. Gates too! If you can't afford that, then you can't afford to fill-up these thirsty babies.

There is a product called belt dressing by Gunk (I think) which is an aerosol spray. It will buy you a few squeak-fee days.

87 STEPPER · 01-19-2006, 07:35 AM

If your truck has the one surpintine belt look at the groovs of the crank pully mine were cloged with small chunks of rubber from the belt and it was causing it to slip and squeal i removed the pully and sand blasted it and repainted it and it stoped.

If you dont have access to a sand blaster then a wire wheel will do the job as well.

Good luck

01-16-2006, 05:10 PM	#1
Army_Dude Registered User Join Date: Dec 2005 Location: Fayetteville, NC Posts: 187	Squealing belt... Whats the best way to diagnose which belt is squealing? I got one that is driving me nuts. They all look good. Not too loose or too tight.

01-16-2006, 05:48 PM	#2
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,904	Re: Squealing belt... did you check the underside and see if its glazed or anything? __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

01-16-2006, 06:14 PM	#3
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: Squealing belt... Usually it is not that hard, just rev the motor at the carb and it should become obvious. If it is doing it all of the time, then get a bar of soap, the small bars from a hotel works best. As you look for the noise stick the bar up against the rotating belt and coat the inside, the squeal will go away or change tune. If you are one that has problems doing this then use a spray belt dressing to find the squeal.

01-17-2006, 02:11 PM	#4
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Re: Squealing belt... I have always used a Crayola crayon! If you let it touch the side of the belt or the face of it..use black so you dont have a colored belt haha. It will quieten immediately and that will tell you which belt it is. __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

01-17-2006, 03:11 PM	#5
1976K5CHALET Senior Member Join Date: Jan 2003 Location: Grand Junction, Colorado Posts: 610	Re: Squealing belt... If it isn't a glazed belt...and at the worst case...ensure the top of the belt is flush with the top of the pulley groove...as it should be as the pulley groove is designed for (x) series belts (15) i believe. I couldn't cure my squeel even with quality goodyear gator back belts so i bought new pulleys and it cured the issue. Doug W. __________________ Doug Wright aka K5NUTT over @coloradok5.com Owner of http://groups.yahoo.com/group/ChevyK5BlazerChalets Certified K5 Nut

01-17-2006, 11:10 PM	#6
jimfulco Registered User Join Date: May 2003 Location: Shreveport LA Posts: 3,170	Re: Squealing belt... Get out the WD-40 & give a little pop to each belt while the motor's running, and the squeaky one will quiet down.

01-18-2006, 11:12 AM	#7
hotrodhomi Registered User Join Date: Apr 2004 Location: Sacramento Posts: 3,737	Re: Squealing belt... Replace them all. They are cheap. __________________ '72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht

01-18-2006, 11:54 PM	#8
bmartin9122 Registered User Join Date: Jan 2006 Location: Texas Coastal Bend Posts: 169	Re: Squealing belt... Yup... I just replaced all three for only $40. Gates too! If you can't afford that, then you can't afford to fill-up these thirsty babies. There is a product called belt dressing by Gunk (I think) which is an aerosol spray. It will buy you a few squeak-fee days. __________________ 79 GMC Sierra Grande K15 --PPG paint code 62608 Sunburst Orange Metallic (WA802K) --Gentex auto-dimming rearview mirror model K31 --Carriage Works billet grille model 40071 --Go Industries 2.5" tubular stainless headache rack --Sylvania Silverstar sealed headlights model H6024ST --Texas Saddlebags center console model 101 --Brown's Welding class IV V-5 pipe bumper --Ramsey RE8000 winch --33" tires Last edited by bmartin9122; 01-18-2006 at 11:56 PM.

01-19-2006, 07:35 AM	#9
87 STEPPER STILL PLAYS WITH TRUX Join Date: Nov 2002 Location: Melbourne, Fla. Posts: 2,764	Re: Squealing belt... If your truck has the one surpintine belt look at the groovs of the crank pully mine were cloged with small chunks of rubber from the belt and it was causing it to slip and squeal i removed the pully and sand blasted it and repainted it and it stoped. If you dont have access to a sand blaster then a wire wheel will do the job as well. Good luck __________________ ~~Bruce~~ MY 87 STEPPER MY 99 2D/WD TAHOE

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