I just picked up a 1994 F-super duty with a parking brake assembly connected to the transmission. I'm not familiar with this set up and it looks like a a real project to replace the shoes. I don't have the special tools nor do I have a hydraulic press. Can I buy this as an entire unit from someone other than Ford ? I've been searching online and the Ford ones seem pricey. I'd hate to spend a $1,000 or so for a parking brake.

Any help would be greatly appreciated.

 

Also, if anyone has rebuilt one, was it all that difficult ? That may be my best bet.

 

Man, 133 views and no replies. I think I'm in trouble.

 

bump

 

it has been a long time since i have replaced the shoes in a driveline brake assembly.
you will need to drop the driveshaft, then remove the drum. after that is should be fairly easy to replace the shoes with regular toolbox tools.

 

That's what I thought at first. Then after looking into it I realized that the whole assembly needs to come off first, then you need to remove a 2 1/4" nut and then press out the shaft. After that you can replace the shoes. The shoes are the easy part.

I'm not sure if I need any special tools or not. I can use my friends press if needed. Just not sure if there's going to be any unexpected surprises.

This has got to be one of the stupidest set ups that I've seen in quite some time.

 

Finding the seals, bearings and "O" rings is the hardest part.



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Do you think I could get them at the Ford dealer ? Should be pretty common.

 

The Ford dealer will be of no help as they will tell you that “THEY’RE NOT REBUILDABLE. YOU HAVE TO BUY A BRAND NEW UNIT TO THE COST OF $1600.00”.
The O-ring should be a 1/8” x 2” I.D. O-ring but may be too tight as the old one may mic’s out .120.
and a new one mic’s out at .139 thick. So you may just have to find one that will fit.
The seals were from Car Quest Auto Parts store. They are in: National Seal, SLS 65x90x10 and National Seal SLS 75x100x12. They had to order them.
The old bearing were used.
The above information is for the one that was rebuild in the photo above. Yours may be different and have different sizes.

 

I agree with your opinion of the dealer. They want to sell the whole unit, but I'll check anyway. The brake assembly that you posted above is a little different than mine. I'll just have to check the measurements on mine and go from there.Thanks for the help.

 

Well I got a little time today to work on my truck. I got the drum off without removing the whole assembly. I had to chase the threads on the flange and then run two long bolts through which pushed off the drum. It took a little bit of heat and some patience, but I got it off.

To my surprise, the drum and shoes were in great shape. That's bad news because I thought that was what was making all the noise. Now if I spin the shaft on the unit, I can still hear the noise. I guess I have a bad bearing.

I tried taking the assembly off the transmission but it didn't work out so well. I hope the bearing didn't overheat and mess up the shaft on the trans. I'll tried again tomorrow if I have the time. Hopefully tomorrow will yield better results.

 

Any photos of your work on it would be good too.

 

I'll take some when I get back on it. Maybe it will help someone else later.

 

Send me a PM with your email, & I'll send you some files on how to rebuild it.
These things have a few ounces of ATF in them to lube the bearings. They usually don't get checked, and end up running dry...

 

Thanks for the offer. I have the book and have plenty of info on the rebuilding part. My problem at the moment is actually getting the assembly off the tranny. That thing is stuck and I can't get a good whack on it. Plus I don't want to break it. It seems like the hardest thing with working on old stuff is just getting things off. It took me longer to get the rear wheels off than it took to do the brakes.

If I get it off and need those files, I'll send a pm. Thanks.