11 Inch Brake question

Hi All,

I have a '64 CJ5 that the previous owner converted to 11 inch brakes. I have taken them apart, put new bearings/races/seals in the kingpins/knuckles and I'm currently putting them back together. After a search of previous posts, I know they are the self energizing type, so the short shoe should be in the front. The difference in length between the short shoe and the long shoe is only about 1/4 inch, so it's not obvious which is the short or long shoe. Could you take a look at the pictures and see if it looks ok? (I'm afraid I may have them backwards)

Thanks

right front


left front

 

Looks correct. In the Tech Library section check out the first pic in the 11" Drilled Drum Conversion article. It shows the setup as it came off of a 72 Waggy. As long as you have the correct star wheel adjuster in place you'll be OK. The star wheel should have an R or an L stamped into the end of it to show which side of the vehicle it goes on. When the little plate turns the star wheel, the shoes should spread farther apart.

tommy b

 

Here's the way I set mine up;
brakes work good.

 

Actually the picture shows the shows on backwards. It shows the short one on the rear and the long one on the front. The self adjusting cable goes towards the rear of the vehicle along with the shoe with the longer lining.... Nickmil

 

Thank you for taking the time to look at the brake pictures. I used a piece of string to measure the circumference of the linings. It may not be obvious from the picture where the linings stop and start. I added some markings to the pictures.




If you measure the angles, they are almost identical. Based on the other pictures that I'm seeing, it looks like the position of the lining maybe more important. In the other pictures that I have seen, it looks like the rear brake shoe has the lining lower on the shoe (closer to the starwheel). I'll go ahead and reverse the shoes.

Thanks,

Eric

 

I think you've got it right, although it's hard to see the lining length on the front shoe in your original pics.
I'm more concerned about the position of the linings on the shoe...something just looks weird to me there....the position of the linings looks different than it should be.
228 used to be the 11" relined shoe part number, with a B or R following for bonded or riveted.

 

I sold a lot of brake shoes 30 years ago, and replaced quite a few myself, and I recall that the longer shoe was, say an inch or so longer than the shorter shoe. An obvious difference.

I understood that this was an effort to make the two shoes wear out at the same rate, since otherwise they would wear at different rates due to the self-energizing property. However, this should only matter to the shoe manufacturer/rebuilder, since it means you don't need to use as much lining material if you make them different lengths. If the shoes are the same (long) length, you'll find that one shoe is thicker than the other at relining time, but as a customer you shouldn't care.

There's still a difference between the front/rear shoes though. If you look at the TSM, you'll see that they label a primary (front) and secondary (back) shoe. The TSM picture shows the secondary lining covering the entire surface of the shoe, not stopping about 2" short like both your shoes do. The primary shoe has the gap at the top, as you've shown it, but the secondary shoe lining covers the whole shoe.

Where did you buy these shoes? In the past, customers had a few different quality levels available, with the lowest being the rebuilt bonded (glued-on) shoes. You could also get rebuilt riveted and new riveted (like factory parts). If you want to look into it, you could take these shoes back and see if you could get the higher quality parts. These'll work, but their lifetime won't be as long as if you had the shoes with uneven lengths.

hth!

 

I got these at Napa. I think they were Tru Stop. I'll go back and see if they have another brand/level.

 

Looks ok left/right to me too. NB the labels are above each pic.

 

Ok, didn't see the lableling the first time around. The hardware is ok but the linings still look backwards to me because the primary shoe shows the lining way down on the backing. When the shoes are pushed outward by the wheel cylinder it's possible the backing could hit the drum first, especially as the lining wears....
I think I'd take them back and get some standard long secondary shorter primary shoes. Then there'd be no question. Nickmil

 

I took the board's advice and went back to Napa. I returned the TruStop for the United brand. What a difference! It's obvious which are the short and long shoes now:

United Right Front:


United Left Front:



Thanks again.

Eric

 

looks much better

 

I'm confused. I think you're missing some stuff: where is all the rust, brake dust, gear oil, and brake fluid?

 

I didn't forget. But I decided to add that slowly, over time.

 

Very Good! Looks great! Nickmil