Spring Brakes Installed!

[Sam 4106]

Hi Paul,
Thanks for the explanation. I was not aware of the difference. You did a good job educating me.
Thanks, Sam 4106

[johns4104s]

Sojourner,

Please if possible email me a sketch of the MCI 9 duel system. Do you have a part# on the newer spring break?

Thanks John

Paul,

Looks great, did you have to run more tubing? Do you need to add a tank for the duel system?

Thanks John.

[Dreamscape]

Hi John,

I did not have to run any tubing, at least not yet. I will when I convert to a dual system. The only extra tank I may consider is one for an emergency resevoir in case I have a real problem. When I do go to dual, I will make the primary resevoir for the rear and the secondary that is located in the front. for the front brakes. Other than that I'm very happy. Now I need to take it on a run a find out for sure.

Paul

[JohnEd]

Paul,

Excellent photo doc.

Thanks for taking the time.

John

[johns4104s]

Paul,

When you say dual what do you mean?
I am familiar with the system installed on one of my 04,s. The air supply comes from the front tank up tp the dead man switch, then on to the spring brake cans, This is over and above the normal brake system.The dead man also has a tube that exughsts to the outside, to dump the air. Also there is a one way valve that is positioned were the rear spring break hose splits.

John

[Dreamscape]

Hi John,

Here is the best I can explain. This was taken from a source on the net I found.

"Most air brake equipped vehicles on the road today are
using a dual air brake system. The system has been
developed to accommodate a mechanically secured
parking brake that can be applied in the event of
service brake failure. It also accommodates the need
for a modulated braking system should either one of
the two systems fail. It is actually two brake systems in
one, with more reservoir capacity resulting in a much
safer system. At first glance, the dual system might
seem complicated, but if you understand the basic air
brake system described so far, and if the dual system
is separated into basic functions, it becomes
quite simple.
As its name suggests, the dual system is two
systems or circuits in one. There are different
ways of separating the two parts of the system.
On a two–axle vehicle, one circuit operates the rear
axle and the other circuit operates the front axle.
If one circuit has a failure, the other circuit is
isolated and will continue to operate."

What you are referring to is like the emergency valve that Lee was discussing. I like what you call it better "Dead Man" switch. I think we are talking about the same thing, just your is set up different. Do you have a schematic showing the plumbing?

Paul