H Brake Questions

I am trying to repair the brakes on my 51H and I have the following questions.

1. Is the Bull Pinion, Part No.353539R2, the shaft that the brake drum fits on? I believe it is, but I want to make sure before I buy the wrong seals.

2. If it is, is Part No.48498D the correct seal? If it is correct, what is the current SKF number for it?

3. Is Part No. 63090D a felt seal? If so, is there a better seal to use?

4. Where do you go to get the brake linings replaced? Can any brake shop do it, or is it a specialty lining?

5. The left drum is badly scored? Can it be machined smooth or does it need to be replaced?

I know this seems like a lot of questions, but it is my first time into the brakes and I want to be sure and get it right.

Thanks for the help.

I don't know about the seals, but #1 answer is yes, the bull pinion is the brake shaft too. I have good used drums for $10 plus postage if you'd like one.
Zach

Seal that goes behind drum is 76510C91. New brake bands go for about $50 each.

You will have to take your bands to someone who does industrial brakes like Northeast Brake Equipment in Minneapolis. A regular car shop won't be able to do them.

If your existing bands have the top clevis rivited on to the band, they are original and are worth relining. If you don't want to reline them, I'd be interested in them. I had to have a heavy duty lining put on one side to compensate for wear in the drum.

I don't know the situation currently, but the aftermarket brake bands were too long (even your local dealer has aftermarket at this point). If you buy new bands and can't adjust them enough, you will have to cut the band and have it rewelded to be shorter.

Another problem with the aftermarket bands is that the top clevis is made buy rolling the end of the band into a loop and spot welding it. The spot welds are not strong enough and will rip out if you use the brakes hard and often. If you are not stopping one wheel to turn around short, it probably won't be an issue. I'm not excited about the idea of brake failure no matter what I'm doing.

A third issue is that the metal band itself is thinner than the stock ones. Once you have shortened the bands and rewelded the clevis, the eye of the clevis can tear.

Like I said, I'm looking for some original bands ro reline...

Greg

Zach,

Please give me your email address so I can contact you directly.

Thanks.

Doug

Bruce,

Any tips on how to remove the seal without dimantling the bull pinion bearing cage?

(quoted from post at 14:30:20 05/23/11) Bruce,

Any tips on how to remove the seal without dimantling the bull pinion bearing cage?

Click to expand...

Drill a couple holes in it and screw some heavy duty screws in. You can then use the screws to pry the seal out.