MC8 parking brake can

[bear355]

   I have a 74 MC8.The rightside parking brake can (REAR) is leaking.It is not made like our GMC 4106 which we have rebuilt in the past.You can release them  with a bolt.How do we rebuild the ones on our MCI?

[JackConrad]

The MC-8 uses Bendix DD3 brakes on the drive axles. Here is a link to the Bendix website that explains the operation of the DD3. They can be rebuilt.  Bendix website has many helpful pages inclding part list and technical bulletins.  Jack

http://www.bendixvrc.com/itemDisplay.asp?documentID=2393

[Dallas]

The MC-8 uses Bendix DD3 brakes on the drive axles. Here is a link to the Bendix website that explains the operation of the DD3. They can be rebuilt.  Bendix website has many helpful pages inclding part list and technical bulletins.  Jack

http://www.bendixvrc.com/itemDisplay.asp?documentID=2393

Just be ready for a heart attack when you see the prices on repair and replacement parts! LOL!

DF

[Tom Y]

Bear, Which cans can you release with a bolt? If your 8 than someone has changed them to spring brakes. Which should not be opened.  Tom Y

[Sojourner]

Bear, Which cans can you release with a bolt? If your 8 than someone has changed them to spring brakes. Which should not be opened.  Tom Y

Amen!
Or does it have 2 or 3 line attach to it....3 line is DD3, not spring brake can. Or a photo of it to be sure what you have. If it is spring brake can and if in fact an older 60's version, they can be taken apart which is very dangerous. Now days, they are sealed unit as far as the heavy spring can end portion.

FWIW

Sojourn for Christ, Jerry)

[JackConrad]

If all you need is to replace the diaphragms, replacements are available much cheaper from Mohawk Industries.  Jack

[bear355]

   We ordered a diaphram kit from Mohawk at 1/2 what MCI wanted.