Replacing a Spring Brake Chamber

It is not going to work IMO... Without air supplied to an emergency section the rod will be extended all the time as if your brakes applied.

 

I always caged them, and let them out on the ground, then measure how much is out then cut your new chamber push rod the same way. Be sure of where it need to be before cutting it. I always replaced the whole chamber because they look much better, the springs in the chamber are new, stronger and will hold better and when the DOT gives you an inspection 1 rust crack on the old can may put you OOS. this is a chamber i took off a Truck last month that we bought http://i1313.photobucket.com/albums...14c-1b0810fddb54_zps42b27bc2.jpg?t=1390076485 http://i1313.photobucket.com/albums/t552/oneway_towing/CAM004291_zpsd682430e.jpg?t=1390076403

 

Measure your axle that does have the Spring brake and simply duplicate it. Add the Spring release Air lines and that is all.The only thing that's different on yours is No Emergency line with a single chamber

 

I do not understand a reason to cage chambers before removing and then before installing. Never done it before that way

 

http://i1313.photobucket.com/albums/t552/oneway_towing/CAM00431_zpskxhdzhqo.jpg?t=1390077895 Brake chamber rod fully extended, (spring brake type 30 30 standard stroke)

 

Before you install anchor lock(2 chamber brake assemblies) by extending the emergency air lines to the new chambers, consider the fact that your truck likely has a 4 channel ABS system now. I don't think it is recommended to modify the system. You can check to see if you have a 4 or 6 channel system by checking which wheel ends have the speed sensor and in turn an exciter ring on the hub. If it is a 4 channel system, a wheel lock up/release cycle on a properly controlled wheel will also attempt to do it on your newly modified wheel end with results hard to predict. Even if it is a 6 channel system, the 2 chamber assemblies react differently than a single chamber assembly. i don't think a dealer would attempt a modification like this.

 

Its an option you can get at a dealer, It works well with ABS.

 

I do it when installing mainly for convenience... depending on the model of truck and slack adjuster, the slack adjuster sometimes gets in the way when you try putting it on uncaged.