Does anyone have a part number for brake chamber for drivers side drive axle or have a good used one for 76 Mci 8
http://cgi.ebay.com/ebaymotors/MCI-Coach-Brake-Chamber-_W0QQcmdZViewItemQQhashZitem112f75482QQitemZ4613166210QQptZOtherQ5fVehicleQ5fParts (http://cgi.ebay.com/ebaymotors/MCI-Coach-Brake-Chamber-_W0QQcmdZViewItemQQhashZitem112f75482QQitemZ4613166210QQptZOtherQ5fVehicleQ5fParts)
http://www.bendixvrc.com/itemDisplay.asp?documentID=2393 (http://www.bendixvrc.com/itemDisplay.asp?documentID=2393)
I found a pair of them om Ebay a couple months ago. Not easy to come across. I ordered parts to rebuild them for spares. Rebuilder Supply rebuilds for 265.00 or so + your core. This is the place on Ebay above selling new ones. Tom Y
I should have said these are DD3 chambers. Mci has them also. Tom Y
We bought a pair from HB Industries about three years ago. They were $365.00 each then.
Don and Cary
4107 GMC
Neoplan AN340
Are they DD3 on the tag axle and front also?
Quote from: chart1 on March 11, 2011, 06:55:14 PM
Are they DD3 on the tag axle and front also?
No
Bob
Are the fronts and tags the same and if so what are they?
My MCI 8 had 24/30 on the tag and steers but I have saw 30/30 on others
good luck
24/30 30/30 ????? ???
Sorry Cory type 24 on the steers type 30 on the tags or type 30 on both you need to read between the lines with me lol
good luck
k thanks
WOW ..the type 30 are a lot cheaper than the DD3
Quote from: chart1 on March 11, 2011, 07:59:54 PM
WOW ..the type 30 are a lot cheaper than the DD3
Cory,
Yes, they are a lot less complicated and a lot more common than the DD3s
Bob
Good news there are 4 of the cheap ones on the bus and 2 of the expensive ones. Bad news is the expensive ones are the ones that are bad. >:(
Big $$$$ yes, but not that hard to work on. And after market parts are out there, as there are a lot of these on the road yet. I picked one up from a GMC and you can see the effects of no air dryer, or one that did not work. Tom Y
There are three types of brake chamber that bus people usually have to worry about. The DD3 are used on about all the older MCI's and many other brands of buses for the drive axle position only, and about always in the 30 size. The DD3 has a unique emergency/parking brake system suitable for buses. The "30" is the size of the main chamber diaphragm in square inches, and that governs the power the chamber will deliver for a given amount of air pressure.
The other, far more common and less expensive, drive axle brake chamber is a spring brake type. That's a type 30/30, or a type 24/30, or similar designation. the "/30" indicates that it has a spring chamber and the size of the spring. These come in standard stroke and long stroke models, the long stroke type is the preferred type since it allows more stroke on the pushrod before adjustment is mandatory. Spring brake chambers are larger physically than the DD3 and on MCI's they interfere with the suspension and cannot be substituted without major surgery.
A steer or tag axle brake chamber is a Type 20 or a Type 24, with no "/XX" in the name, and that indicates a plain brake chamber with no added spring brake section. As always, the number designates the size of the diaphragm and the power the chamber develops for a given air pressure. Brake balance depends on the correct size of chamber and the correct slack adjuster per the design of the bus, axle weights, etc. The front chambers on my MC-5C are Type 20's, and on some larger buses they may be Type 24's. These also come in standard stroke and long stroke types, and a useful upgrade is to change to long stroke when you buy new (and these are regular maintenance items) but the advice is that you always have the same type on both sides of an axle, and on the whole vehicle so that no one gets confused when checking brake stroke and slack adjustment.
Brian
Most of the larger buses like a H-45 Prevost with disc brakes use the SC 16 , on the Eagle most of those were type 24 or 30 with 30/30 spring brakes, you never know what you will find on these old buses
good luck