Originally Posted by 96bounder
Other than normal maintence,i'm a firm believer in "if it aint broke,dont fix it"
I feel the same as you, drove a low boy for several years and was a diesel mechanic for more decades then I care to count LOL.
His DP had 73000 miles on and he had bought all new brake chambers being he read that was the proper way, to change all out due to an air leak.
So I removed the chamber that was leaking and tore it apart and there was no wear on the piston rod / bushing, replaced the diaphragm and then replaced the rest of them for his piece of mind, showed him how to cage the maxi and he caged the other one the other one.
He saved a bundle getting his money back for all the new cylinder's and he has a few extra spare diaphragms for a quick roadside repair for the future now.
Did enjoy helping him but he was very hard headed about it
. But when he talked to the parts and service manager at the trucks shop he came around and exchanged all the clys for diaphragms.
I kind of believe if he read that all DP drivers should have a yearly triple bypass, he would get two LOL
Just kidding he is a great guy and glad I could help him