The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-16-2019, 09:57 PM   #1
c10_69
Registered User
 
Join Date: Feb 2019
Location: ny
Posts: 15
Drum brakes overheating

Quick question for anyone who knows about drum brakes when I’m driving my brakes keep getting really hot when I get home I can smell them and the tire rim will be so hot it will burn you if you touch it I don’t know anything about drum brakes so was wondering if this is normal or need to be adjusted or what is going on thanks for any help.
Posted via Mobile Device
c10_69 is offline   Reply With Quote
Old 06-16-2019, 10:00 PM   #2
hjewell2
Registered User
 
hjewell2's Avatar
 
Join Date: May 2011
Location: mich
Posts: 655
Re: Drum brakes overheating

Brake shoes are adjusted out to far.
hjewell2 is offline   Reply With Quote
Old 06-16-2019, 10:04 PM   #3
c10_69
Registered User
 
Join Date: Feb 2019
Location: ny
Posts: 15
Re: Drum brakes overheating

I don’t know if this helps any one else answer my question but when I first use my brakes the pedal seems to have a decent amount of travel before brakes engage but as they heat up it will have little to no travel and be very firm
Posted via Mobile Device
c10_69 is offline   Reply With Quote
Old 06-16-2019, 10:14 PM   #4
swb4me
Registered User
 
Join Date: Sep 2015
Location: SE Idaho
Posts: 153
Re: Drum brakes overheating

A bit more information about your brakes would be useful. Are the shoes, wheel cylinders,etc new or old? Is the master cylinder new? How about the rubber lines? It's common for old rubber lines to collapse and keep the brakes from releasing after they are used.
swb4me is offline   Reply With Quote
Old 06-16-2019, 10:33 PM   #5
c10_69
Registered User
 
Join Date: Feb 2019
Location: ny
Posts: 15
Re: Drum brakes overheating

one wheel cylinder that I replaced with the help of a buddy is new as for everything else I am not sure because the truck used to belong to my grandfather and the truck sat for at least 7yrs after he passed away until my grandmother gifted it to me last spring
c10_69 is offline   Reply With Quote
Old 06-16-2019, 10:38 PM   #6
swb4me
Registered User
 
Join Date: Sep 2015
Location: SE Idaho
Posts: 153
Re: Drum brakes overheating

7 years of not being used is a long time. The rubber parts of your brake system should be replaced. At a minimum you should replace the rubber hoses and bleed the brakes until you have new fluid coming out of all four bleeder valves.
swb4me is offline   Reply With Quote
Old 06-16-2019, 10:57 PM   #7
Steeveedee
Who Changed This?
 
Steeveedee's Avatar
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,676
Re: Drum brakes overheating

If you didn't yet, also replace all the brake shoe return springs, as a minimum. As was mentioned, a complete hydraulic overhaul is recommended.
__________________
~Steven

'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper

Simi Valley, CA
Steeveedee is offline   Reply With Quote
Old 06-17-2019, 07:48 AM   #8
7tee
Registered User
 
7tee's Avatar
 
Join Date: Mar 2015
Location: Fletcher, N.C.
Posts: 309
Re: Drum brakes overheating

Quote:
Originally Posted by swb4me View Post
7 years of not being used is a long time. The rubber parts of your brake system should be replaced. At a minimum you should replace the rubber hoses and bleed the brakes until you have new fluid coming out of all four bleeder valves.
This could very well solve your problem, it sure did on mine a few years back...
__________________
1970 C/10 350/T5 SWB stepper...
1979 Corvette 350/Auto T-top...
2010 Acura RL...
2015 2500HD Z-71 Silverado...
7tee is offline   Reply With Quote
Old 06-17-2019, 10:37 AM   #9
Overdriven
Registered User
 
Join Date: Mar 2016
Location: Long Island NY
Posts: 598
Re: Drum brakes overheating

Out of curiosity is it the front, rear or both that are heating up? If it’s just the rear and you use the emergency brake it may not be releasing all the way. This is just another thing to check, the advice given above is still very good and should be followed.
Overdriven is offline   Reply With Quote
Old 06-17-2019, 02:16 PM   #10
Steeveedee
Who Changed This?
 
Steeveedee's Avatar
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,676
Re: Drum brakes overheating

Quote:
Originally Posted by Overdriven View Post
Out of curiosity is it the front, rear or both that are heating up? If it’s just the rear and you use the emergency brake it may not be releasing all the way. This is just another thing to check, the advice given above is still very good and should be followed.
That is an excellent point! It having sat that long, the parking brake mechanism could be all rusted up.
__________________
~Steven

'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper

Simi Valley, CA
Steeveedee is offline   Reply With Quote
Old 06-17-2019, 02:43 PM   #11
c10_69
Registered User
 
Join Date: Feb 2019
Location: ny
Posts: 15
I don’t use the parking brake and both rear wheels heat up
Posted via Mobile Device
c10_69 is offline   Reply With Quote
Old 06-17-2019, 04:33 PM   #12
basketcase
Senior Member
 
basketcase's Avatar
 
Join Date: Oct 2001
Location: Edgerton OH USA
Posts: 633
Re: Drum brakes overheating

Someone may have in the past and rust could be holding it partially applied. Check to be sure they are fully released.

Jack up the rear and see how hard it is to turn the wheels when they are cold. There should not be a noticeable drag but just a slight brushing sound as they turn is ok. Then get in your truck and press the brake pedal a few times and check to see if the drag has increased afterward. If it has that tells you that the shoes are not retracting properly after you let off the brake pedal.
__________________
'69 swb stepside in progress.
'59 Corvette lifetime project
basketcase is offline   Reply With Quote
Old 06-17-2019, 06:07 PM   #13
Sparky dave
Registered User
 
Join Date: Nov 2017
Location: Leeds west yorkshire
Posts: 307
Re: Drum brakes overheating

This is adjustment wheel to set the clearance of the shoes to the drum. If you jack up the rear and rock the wheels left to right they should turn easy. Make sure the handbrake is released and the cable is slack and not jammed. If you need to adjust the rear drums remove the wheels and there should be a hole or slot in the bottom of the drum so you shouldn’t need to remove it. you can insert a small flat screwdriver through the hole/ slot and turn the wheel inside. It should be adjusted so it ever so slightly rubs ( the wheel will still easily turn but you can slightly hear it rubbing)
However as previously mentioned if not been used for years a full break system service is the responsible course of action. If your not sure but still have to diy it. YouTube YouTube and YouTube some more. Good luck
Attached Images
 
Sparky dave is offline   Reply With Quote
Old 06-17-2019, 06:12 PM   #14
Sparky dave
Registered User
 
Join Date: Nov 2017
Location: Leeds west yorkshire
Posts: 307
Re: Drum brakes overheating

Pic of the slot/ hole

Note: some models came with self adjusting drums and they adjusted themselves when you went into reverse and hit the brakes
Attached Images
 
Sparky dave is offline   Reply With Quote
Old 06-17-2019, 11:07 PM   #15
KQQL IT
At the body shop.
 
KQQL IT's Avatar
 
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,254
Re: Drum brakes overheating

Our 68 broke the circles spring and the adjusters went full tight.
However both getting warm would lead me to the brake hose as said.
Attached Images
 
__________________
" That didnt make it any newer "
" Dont antique the equipment "
KQQL IT is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:13 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com