Brake Booster Rebuild

[1990new]

I recently replaced the booster on Rosie and decided to take the old one apart.
If I could find a source for the small seals, I could rebuild it easily. The diaphragm is still good. Has anyone done this? Do you know where I can get the seals?

[bravekozak]

E8BZ-2004-A is no longer available

[1990new]

E8BZ-2004-A is no longer available

I wonder where the parts are coming from for
the remanufactured ones that are available.
i've looked everywhere I can think of

[1990new]

I got the booster completely apart and have done a thorough cleaning on all the parts. Tomorrow I'm going to paint the metal parts inside and out.
I learned that you can get brake fluid inside the booster. There was about 1/2 cup of it in the old one I took off Rosie. I had replaced the master cylinder on Rosie last year but did not change the booster then. The brake fluid had eaten lots of paint off the inside of the booster.
It turns out the old master cylinder had been leaking brake fluid into the booster because the seal that surround the push rod that goes into the master from the booster was bad. This caused the vacuum to pull the fluid into the front side of the booster. After installing the new booster, in addition to the brakes working much better, Rosie is also running better and her gas mileage has improved.

Looks like all the other seals in the booster are OK.. just need that one little one that goes in front. It looks like the one show in this link.
http://4wdtrainingsolutions.com.au/w...-improvisation


I don't need the booster right now..just want to have a spare on the shelf.

[1990new]

I got the booster completely apart and have done a thorough cleaning on all the parts. Tomorrow I'm going to paint the metal parts inside and out.
I learned that you can get brake fluid inside the booster. There was about 1/2 cup of it in the old one I took off Rosie. I had replaced the master cylinder on Rosie last year but did not change the booster then. The brake fluid had eaten lots of paint off the inside of the booster.
It turns out the old master cylinder had been leaking brake fluid into the booster because the seal that surround the push rod that goes into the master from the booster was bad. This caused the vacuum to pull the fluid into the front side of the booster. After installing the new booster, in addition to the brakes working much better, Rosie is also running better and her gas mileage has improved.

Looks like all the other seals in the booster are OK.. just need that one little one that goes in front. It looks like the one show in this link.
http://4wdtrainingsolutions.com.au/w...-improvisation


I don't need the booster right now..just want to have a spare on the shelf.

Found a link to a PDF that explains the exact problem that I had:
http://my.cardone.com/techdocs/PT%2050-0001.pdf

[reddragon]

I stripped my booster the other day. I think it looks better now...

[1990new]

I stripped my booster the other day. I think it looks better now...

IT dose look great.
What kind of paint are you going to use to repaint it? I have to paint the inside of mine too.

[Dragonhealer]

There are only so many sizes of that seal, it's an industry standard thing.
1990new, if you will post the dimensions of that seal, and the shaft size, I'll see if we have some in our booster parts stock.

[1990new]

There are only so many sizes of that seal, it's an industry standard thing.
1990new, if you will post the dimensions of that seal, and the shaft size, I'll see if we have some in our booster parts stock.

Seal OD is 41mm
Shaft is 9.38mm I sanded shaft some to remove rust so I probably reduced the diameter a little.

The number on the seal is "810-24100" and the brand is "JKC" "M16" is also on the seal.

Than would be great if you can match it.

[Dragonhealer]

Perfect, nominal 3/8ths shaft, odds are good! Will let you know tomorrow

[1990new]

Perfect, nominal 3/8ths shaft, odds are good! Will let you know tomorrow

OK... Thank You.

[reddragon]

IT dose look great.
What kind of paint are you going to use to repaint it? I have to paint the inside of mine too.

That is already painted - clear gloss

[WmWatt]

The people who make rust paint for metals (eg Tremclad, Armor) usually offer a clear version. Just look on the shelf. Probably polyurethane plastic. I use a lot of that stuff on old bicycles I restore. I use one sold as concrete sealer because it costs less. I read an article by a guy who uses it on restored furniture recommending it. I brush it on as I find spray cans pretty wastefull with all the overspray although they use volatile butane to carry the polyurethane which does dry fast.

[1990new]

I really just want to get this one back to black. I only removed some of the black paint on the outside near the bottom. I'm roughed up the rest on the outside. The inside was mostly stripped so I completed the stripping there. Not worried about the looks there just want it to prevent rust. Outside needs to resist the heat and oils from the engine bay as the original paint did. Had rust on the outside on the lower part where the brake fluid leaked and caused the paint to peel.

[1990new]

OK... Thank You.

Did you have a chance to check on the seal?