Grinding type sound coming from rear of truck Please help.... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bigmikey · 06-07-2004, 02:59 AM

I just replaced all the brakes on my 69 3/4 ton chevy truck, and about a week and a half later, I started hearing this grinding type noise. I thought it was the brake shoe constantly rubbing the wheel drum. So I took it off and that wasnt it. I have no idea what else it could be. Any thoughts

thanks in advance.. P.S. it only does it while moving.

69 Short Fleet · 06-07-2004, 04:27 AM

Is it coming from the front or rear of your truck? Does it go away after you apply yor brakes or does it grind "brakes on" and "brakes off", and I take it your truck has drums all the way around? Are your wheel bearings OK. Doug

bigmikey · 06-07-2004, 05:09 AM

it is coming from the rear. It does it while applying the brakes or not, but when I am at a stand still the noise is gone. I looked at the wheel bearings and there was a little wear. They were repacked with grease when the brakes were done. I just have no clue

ACES · 06-07-2004, 05:38 AM

Differential problems maybe?
You might want to drain the oil and check for metal flakes.

jlive68 · 06-07-2004, 06:23 AM

Check the pumpkin, as Aces said if thats not it then we can go other places. Also were the bearing put in right???? Hope you figure it out.....

LONGHAIR · 06-07-2004, 10:57 AM

Did you have the drums turned? If not you will get strange noises and bad braking until the new shoes wear-in to meet the drum surface.

Johnny Outdoors · 06-09-2004, 01:00 AM

check for rust on the drum edge rubbing on the backing plate it will show a slight polished mark
take a chipping device (your choice) and knock all the rust off of the drum
check the backing plate was not bent or moved on removal of drum
a little rust will make a lot of noise
a sure test is to saw the wheel side to side while moving foreward slowly
if the noise increases on the turns the drum is flexing and rubbing on the backing plate
just my 2 cents

sam's 72 · 06-09-2004, 02:39 AM

One thing to check out is your carrier bearing. When mine went out I thought it was something in the rearend or rear brakes due to the reconasins ( noise traveling down the drive shaft to the rear of truck ) After checking out every thing that you are checking. I jacked the truck up, started it up, put it in gear. Got under the truck and found the bearing was the culprit.

Sam

SweetandLong68 · 06-09-2004, 02:39 AM

Also Check to make sure the pinion bolt is tight...

hehe Just speaking from what happened to mine when it was making that sound...Tightened it up and it went away like magic.

lata
CHRIS

SweetandLong68 · 06-09-2004, 02:41 AM

Been there too.

Definetly check the carrier.

lata
CHRIS

bigmikey · 06-09-2004, 11:11 AM

what is the carrier bearing?, and where is it located?, thanks for the help guys, it is greatly appreciated. I hope its just one of those things and not the rearend.

cdowns · 06-09-2004, 12:58 PM

carrier bearing: on a 2piece driveshaft it's located at about the back of the cab and holds the front half of the driveshaft up in place

06-07-2004, 02:59 AM	#1
bigmikey Registered User Join Date: Mar 2004 Location: SLC utah Posts: 64	Grinding type sound coming from rear of truck Please help.... I just replaced all the brakes on my 69 3/4 ton chevy truck, and about a week and a half later, I started hearing this grinding type noise. I thought it was the brake shoe constantly rubbing the wheel drum. So I took it off and that wasnt it. I have no idea what else it could be. Any thoughts thanks in advance.. P.S. it only does it while moving.

06-07-2004, 05:38 AM	#4
ACES Life is a gamble Join Date: Oct 2003 Location: Lee's Summit, MO Posts: 796	Differential problems maybe? You might want to drain the oil and check for metal flakes. __________________ 1970 Orange CST C-10 w/350, posi, Longbed The torpid artist seeks inspiration at any cost, by virtue or by vice, by friend or by fiend, by prayer or by wine. -- Ralph Waldo Emerson

06-07-2004, 06:23 AM	#5
jlive68 Senior Member Join Date: Apr 2004 Location: Greenville, Tx. Posts: 286	Check the pumpkin, as Aces said if thats not it then we can go other places. Also were the bearing put in right???? Hope you figure it out..... __________________ 1968 chevy U.S. Navy

06-09-2004, 01:00 AM	#7
Johnny Outdoors SOON TO BE A STEP SIDE Join Date: Apr 2004 Location: Little Valley, N.Y. Posts: 169	check for rust on the drum edge rubbing on the backing plate it will show a slight polished mark take a chipping device (your choice) and knock all the rust off of the drum check the backing plate was not bent or moved on removal of drum a little rust will make a lot of noise a sure test is to saw the wheel side to side while moving foreward slowly if the noise increases on the turns the drum is flexing and rubbing on the backing plate just my 2 cents __________________ 67 CHEVY LONGBED----- BEST 51 DOLLARS EVER SPENT ON EBAY! 4.3 LITER INJECTED MOTOR WITH 5 SPEED GOING IN SOON

06-09-2004, 02:39 AM	#8
sam's 72 Senior Member Join Date: Nov 2001 Location: Pasadena, Texas, USA Posts: 1,005	One thing to check out is your carrier bearing. When mine went out I thought it was something in the rearend or rear brakes due to the reconasins ( noise traveling down the drive shaft to the rear of truck ) After checking out every thing that you are checking. I jacked the truck up, started it up, put it in gear. Got under the truck and found the bearing was the culprit. Sam __________________ 72 LWB chevy truck. Pasadena, Texas

06-07-2004, 04:27 AM	#2
69 Short Fleet Registered User Join Date: Nov 2002 Location: Kelowna B.C. Canada Posts: 1,086	Is it coming from the front or rear of your truck? Does it go away after you apply yor brakes or does it grind "brakes on" and "brakes off", and I take it your truck has drums all the way around? Are your wheel bearings OK. Doug

06-07-2004, 05:09 AM	#3
bigmikey Registered User Join Date: Mar 2004 Location: SLC utah Posts: 64	it is coming from the rear. It does it while applying the brakes or not, but when I am at a stand still the noise is gone. I looked at the wheel bearings and there was a little wear. They were repacked with grease when the brakes were done. I just have no clue

06-07-2004, 10:57 AM	#6
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	Did you have the drums turned? If not you will get strange noises and bad braking until the new shoes wear-in to meet the drum surface.

06-09-2004, 02:39 AM	#9
SweetandLong68 Your UncleBen Join Date: Dec 2002 Location: Indian Trail, NC Posts: 590	Also Check to make sure the pinion bolt is tight... hehe Just speaking from what happened to mine when it was making that sound...Tightened it up and it went away like magic. lata CHRIS __________________ 68 C10 shortbed -- Street/Strip

06-09-2004, 02:41 AM	#10
SweetandLong68 Your UncleBen Join Date: Dec 2002 Location: Indian Trail, NC Posts: 590	Been there too. Definetly check the carrier. lata CHRIS __________________ 68 C10 shortbed -- Street/Strip

06-09-2004, 11:11 AM	#11
bigmikey Registered User Join Date: Mar 2004 Location: SLC utah Posts: 64	what is the carrier bearing?, and where is it located?, thanks for the help guys, it is greatly appreciated. I hope its just one of those things and not the rearend.

06-09-2004, 12:58 PM	#12
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	carrier bearing: on a 2piece driveshaft it's located at about the back of the cab and holds the front half of the driveshaft up in place __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

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