LXI Brake Chambers

[Silver Eagle]

Needing part no. for drive axel brake chambers-
Thanks for the help -
MJD

[Silver Eagle]

Would like to change the air brake chambers on the drive axel on a 2000 LXI-

Can I use a standard 30-30 brake chambers on this coach ?

Thanks
MJD

[Randy Dupree]

30-30s will work,but 36-30 is better.if you can find them.

[Silver Eagle]

Thank You -
Will call the supply house tomorrow-

[Randy Dupree]

I have always used 30-30s,but one of our owners says he put 36-30s on and they work way better,hes an old trucker,i trust him.

[Silver Eagle]

Just did alittle research-
He is spot on-
I will be removing the old brake chambers and replacing with 36-30s

Thanks for sharing the info-

MJD

[Randy Dupree]

Originally Posted by Silver Eagle

Just did alittle research-
He is spot on-
I will be removing the old brake chambers and replacing with 36-30s

Thanks for sharing the info-

MJD

Thats what we do here my friend,we share the info!

[Dieselbird01]

Just my 2¢ worth but I suspect your coach probably came from the factory with MGM 3036 piston type brake chambers on the drive axle similar to what are on my 91 WB.

If so, that means that the service brake chambers are 30” diaphragm type chambers and the spring brake chambers are 36” piston type spring brake chambers.

An MGM engineer, that I spent quite a bit of time talking to, recommended not changing my service brake chambers from 30” to 36” because it could result in an unacceptable increase in “brake lag time”.

The same MGM engineer recommended not going from 36” piston type spring brake chambers to 30” diaphragm type spring brake chambers because 36” piston type spring brake chambers have several hundred pounds more “park brake” power than 30” diaphragm type spring brake chambers.

Keep in mind that the “park brakes” are also your “emergency brakes” which means that by going with 30” diaphragm type spring brake chambers, you’re also giving up several hundred pounds of “emergency brake” power on each drive axle brake chamber.

The MGM engineer said that the 3036 piston type spring brake chambers like I have are no longer available but that MGM MJS3028ET051 piston type spring brake chambers were a viable replacement for my coach. NOTE: I have not replaced mine so I can't confirm that the MGM MJS3028ET051 would fit my coach.

He pointed out that the springs used in the MJS3028ET051 piston type spring brake chambers are able to apply even more force than the springs in the old MGM 3036 “piston” type spring brake chambers that my coach came with. He also said that he would recommend 3036's if I decided to go with diaphragm type spring brake chambers instead of piston type spring brake chambers.

My recommendation would be to get the part number off of your old brake chambers and find new chambers that have specifications that are as good or better than the old ones.

There's a big difference in cost between piston type and diaphragm type spring brake chambers... but brakes are pretty important.

[Dieselbird01]

I just did a WOG search for MJS3028ET051.

Here's the short version of what I spent a bunch of time typing in my last post..


https://www.wanderlodgeownersgroup.c...ad.php?t=15064

[rshrimp]

Make your own decision! We are only talking about the parking brake here. All of the service brakes are diaphram type, even the service brake part of a piston style chamber.

From MGM: Why a piston style Chamber.

MJS Series “Piston/Diaphragm” Spring Brakes are
designed to provide dependable service for the
long haul, as well as withstand the rigors of “stop
and go” operations such as emergency response
and parcel delivery.
MJS Series Chambers provide fl eets with the ability
to keep moving, even with an air leak in the spring
side of the unit. Unlike diaphragm type spring
brakes, which can be rendered inoperable by a
minor rupture in the spring side diaphragm, MJS
Series piston brakes continue to function, even
if the “piston-seal” becomes worn or damaged.
This feature allows the piston brake to maintain
sufficient air pressure to “hold-off” the power
spring, allowing the vehicle to complete its route
and return home for repair, avoiding the high cost
of an “on-the-road” service call. This is a benefit
fully recognized by an overwhelming number of
transit bus operations, worldwide.
MJS Series Chambers also provide higher
parking forces: as much as 502 lbs. more at 1¼
inches of stroke over an equivalent size double diaphragm
model; another benefit recognized by
fire truck and emergency vehicle manufactures
and fleet operations throughout North America.
These trucks loaded with hoses, ladders and other
equipment; along with 500 gallons or more of
water, are expected to park and hold on all types of
terrain: from U.S. Forest Service mountain roads,
to the hills of San Francisco, to the streets of New
York. Our MJS Series piston/diaphragm brakes
meet these expectations every day.
MJS Series “Piston/Diaphragm” Spring Brakes:
service and dependability you can count on from a
name you can trust . . . MGM Brakes.