superloop
Member
Alright everyone,
I am stumped here...
I was driving behind DW and when she would apply the brakes, I would hear a hissing sound, only when brakes applied. I thought nothing of it because we are holding air perfectly and she stops like she should. However, I was working on another coach (same chassis and drive train set-up) and his did not make any noises when brakes applied.
The noise seems to be coming from the exhaust area, this is what has me scratching my head...
Now, if I get in it after it has been sitting, lets say over night, and all the air is "dumped" from the system. I can fire her up, press on the brake and no noises at all... but, when it reaches 90-125 PSI area, if I press on the brake the sound i get is what is in the video.
She only makes a sound if the engine is on, no matter if parking brake is applied or not.
**** I have a video that will not load ****
She is a 2002 Ultimate Advantage with Cummins ISC 350 on a Spartan chassis.
Any ideas?
-Lupe
I am stumped here...
I was driving behind DW and when she would apply the brakes, I would hear a hissing sound, only when brakes applied. I thought nothing of it because we are holding air perfectly and she stops like she should. However, I was working on another coach (same chassis and drive train set-up) and his did not make any noises when brakes applied.
The noise seems to be coming from the exhaust area, this is what has me scratching my head...
Now, if I get in it after it has been sitting, lets say over night, and all the air is "dumped" from the system. I can fire her up, press on the brake and no noises at all... but, when it reaches 90-125 PSI area, if I press on the brake the sound i get is what is in the video.
She only makes a sound if the engine is on, no matter if parking brake is applied or not.
**** I have a video that will not load ****
She is a 2002 Ultimate Advantage with Cummins ISC 350 on a Spartan chassis.
Any ideas?
-Lupe