???Drum Brake Assembly???
 

Greetings folks. I was wondering if someone can post a diagram the rear drum brake assembly for a 72 with a GM 12 bolt rear end. Thanks Mister E:chevy:
OR if there is a link with step by step...hey even better;)

Re: ???Drum Brake Assembly???
 

Heres a pic if it will help.

Re: ???Drum Brake Assembly???
 

Thanks. Do you have a different angle showing where the ebrake cable goes? Thanks again.

Re: ???Drum Brake Assembly???
 

man that pic looks all to familar!!! i just re done my brakes this weekend, that e-brake cable is a pain, and if yr mech challenged as i am leave the other side alone until ya get the opposite side complete. i wore a path in the cement walking around lol, good luck and use jack stands for yr saftey

Re: ???Drum Brake Assembly???
 

see the shiny arm on the rear of his pic? right behinde the adjuster? thats where your e brake cable attaches not to the shiny arm but the arm right behinde it

Re: ???Drum Brake Assembly???
 

Can the ebrake cable be installed "later on"? I'm considering ordering one of those stainless ones from Inline.

Re: ???Drum Brake Assembly???
 

umm i dont think so, well i guess you would have to take your brakes back off when your ready to install yr new ones, but that will be a snap after you do this once it wont take long, are you gonna go ahead and replace your wheel cylinders while your at it, there only like 10 bucks each.

Re: ???Drum Brake Assembly???
 

The shoes are on backwards. The short lined shoe is the primary and goes to the front.

Re: ???Drum Brake Assembly???
 

EDIT... I missed this... this one was brought back from the dead. :D

Me too.... :D

Mr E, can you take a picture of the brackets you have there. I recently did this same install this past weekend (1st time I might add) but failed to get a shot from the bottom side of the brake system. If you can post a picture of the brackets I think we could walk you through it in a snap.

As far as adding the e-brake after the drums are together, I think you are our of luck, unless you have extra small hands.

Re: ???Drum Brake Assembly???
 

Here is the best drum brake assembly information on the planet...LOL

http://www.pbase.com/nufsed/drumbrake
You can click on pics to make them bigger!


I followed those instructions and I had not done a drum brake job in over 20 years....here's mine finished!

http://lh6.ggpht.com/_2wzS50GoNjQ/SU...s%20%23100.jpg

Re: ???Drum Brake Assembly???
 

Thats the best link ever! thank you from all of those whom use it from this site!

Special brake drum thank you
 

http://67-72chevytrucks.com/gallery/...mc_moons_2.jpg

I am about to build the rear brakes on a 67 gmc c2500 3/4 ton. The rear brakes, nor emergency brake cables etc... do not exist on the truck so this thread has been very helpful. Thank you so much for posting the link to the "Brake Drum Assembly How to" it is for a 6 bolt hub but the setup is the same as the 8 bolt floating hub from what I can tell.

Re: ???Drum Brake Assembly???
 

I was just getting ready to ask that ?. The short brake shoe faces the front on both the rear and front correct.

Re: ???Drum Brake Assembly???
 

heres one

Re: ???Drum Brake Assembly???
 

Can anyone get a photo of a 3/4 ton axle please. I can't seem to figure out why I mixed up the two brake struts and now I cant remember where they go besides at the top in between the brake shoes and under the wheel cylinders.

Re: ???Drum Brake Assembly???
 

Yep short linned shoe to the front

Re: ???Drum Brake Assembly???
 

the truck is facing right in the photo. This is a picture of the right side of the truck. See the emergency brake cable?
I screwed it up first because I was working on the drivers side and didn't think about the fact this pic could have been of the passenger side.

Re: ???Drum Brake Assembly???
 

Does anyone know if all truck 12-bolts use the same shoes and such?
For example; does 63-72 all interchange or does the 73+ 12-bolt also interchange with the earlier 12-bolts?

Re: ???Drum Brake Assembly???
 

Thank You guys. yall were alot of help

Re: ???Drum Brake Assembly???
 

I found this thread that 10-bolt and 12-bolt interchange, but I still haven't found an answer to my question above.
http://Www.67-72chevytrucks.com/vboa...d.php?t=114315

Re: ???Drum Brake Assembly???
 

I,am 99% sure all 12 bolt truck shoes are the same but I do know there are 2 different shoes and drums, 1 is h/d brakes other is std brakes.

Re: ???Drum Brake Assembly???
 

Wow! A post that refuses to die. Been brought back from the dead five times. :c2:

Re: ???Drum Brake Assembly???
 

Lostmy65, also researching 12 bolt drum brake options, thinking of changing my 65 rear brakes to the newer 12 bolt heavy duty "JB 5" brake package. Just starting to see if it will work. Looks like the backing plates are different from earlier ones, offset to the center of truck to account for the wider brakes shoes. As notes here before by Keith Seymore, this is one of GM's really good brake systems, used as a design goal for trucks.

Any information/can it be done, on retrofitting rear JB 5 brakes to the early 12 bolt 2" brake shoe axles?

Note: using '79 Dana 44 front axle, with the JB 5 brakes. I am planning to use the complete JB 5 brake system on '64 K10 build. Keeping all the original '64 parts so they could be retorfit later.

Les

Re: ???Drum Brake Assembly???
 

I have a 67 C-20 that im currently in the process of doing the rear shoes, pain in the butt, have not been done in id say 30 years, axles have to come off to remove hub and drum, pain in the butt, should have bought new wheel cylinders, went with rebuild kit, got one done, pain in the butt, lol, drums were surprisingly ok, but will replace oil seals and repack bearings did i mention its a pain in the butt.

Re: ???Drum Brake Assembly???
 

I took my 70 front off late last fall put reassembly on hold for the winter then just as I was going to finish my tractor ran over my leg....... anyway time to finish em now and if it wasn't for this thread I don't know what I,d do................... thanks guys

Re: ???Drum Brake Assembly???
 

Does anybody have a picture of the front c10 drum brake assy............

Re: ???Drum Brake Assembly???
 

This help?

Re: ???Drum Brake Assembly???
 

Thanks tony but that is from a rear axle, the fronts are a little different and this is whhat i need help with

Re: ???Drum Brake Assembly???
 

I got the fronts figured out............ I,ll post pic,s asap.
Bob

Re: ???Drum Brake Assembly???
 

Old thread, but this was a great reference! My dumbass disassembed both rear drums and was left without a reference, this was a lifesaver.

Question: There's two different style springs for the nail heads, which one goes where? One is tapered in slightly, and is such a small difference that I wonder if it event matters?

Re: ???Drum Brake Assembly???
 

the tapered one goes on front shoe

Re: ???Drum Brake Assembly???
 

Thanks!! Just to clarify, does the tapered end go toward the shoe or towards the cap?

Re: ???Drum Brake Assembly???
 

Towards shoe, on front shoe

Re: ???Drum Brake Assembly???
 

A good rule of thumb on the brake shoes was stuck in my mind by a High School auto shop teacher.
" Big in the back, like your girlfriend's Butt"
I have never made a backwards mistake since I heard that.

Re: ???Drum Brake Assembly???
 

6 times. Great thread thanks

Re: ???Drum Brake Assembly???
 

I know this thread is pretty old but the link to the pictures was a life saver for me. Been a long time since I have done drum brakes. Add to that the PO had the shoes reversed so who knows what all was wrong. Add to that like a DA I took both rear brakes off at once. Had ordered hardware kit thought I was ready to go, no not all springs come in a hardware kit. Wait on mail order for them. Long story longer, about 2 weeks goes by for this 69 year old and lets just say this thread saved the day and made quick work of the replacement parts. I know it's done right and my son will be safe. Thanks again for the info and pictures.

Re: ???Drum Brake Assembly???
 

7th time, at least!

Yeah, the sequence pics for assembly at the beginning was huge for me. Hadn't done this in quite a while, and I was missing that 3rd hand required for a lot of jobs. Everything is harder when you're doing it wrong!Lol!

Lower spring and star adjuster together first, then mounting the forward shoe on first took care of most of my gravity challenges. Pretty straight forward from there...

Re: ???Drum Brake Assembly???
 

So what would an 11" drums strut and lever look like? I have a 1967 fleet shortbox. I have been trying to find one online but idk if what I found will work or is right, even if the listing or parts are correct. The length of each would help too. I was told that 66 and earlier would not work with mine.

Re: ???Drum Brake Assembly???
 

The 67's are the same as the 72's only with 6 lug axles. I dont know the lengths of the struts but they're flat where the 3/4 ton struts have a bent edge. The pics above are of a 72 and the pics in this link are of the 6 lug 1/2 ton axles. They all use the same 1/2 ton
hardware with 11" drums. https://www.pbase.com/nufsed/drumbrake

Re: ???Drum Brake Assembly???
 

Thanks for that. I have a buddy looking for some who I bought the truck from 1st. If not then the search goes on