PRXB problem...
My 1997 CC Allure has a PRXB Pacbrake, exhaust brake which replace the original sometime around 2005.
The coach now has 67000 miles on it of which I have put about the last 36,000 on it.
The engine is an 8.3L Cummins (mechanical) with an Allison 3060 tranny.
The problem: I am getting almost no breaking from the PRXB.
It operates fine every time the key is turned on it cycles once and I have observed this.
The cylinder extends fully and the butterfly valve appears to close. (viewing from the outside of course).
I ran a test to see if it was getting a good signal when driving , by running a wire from the switch on the throttle linkage all the way to the drivers seat and took a test drive.
When the switch was engaged my meter would show 12 + volts. and I can hear a slight change in the engine noise but hardly any breaking if at all. Tried this from 5th all the way down to 2nd gear… essentially the same results.
Any suggestions before I pull the brake of to inspect it further???
The coach now has 67000 miles on it of which I have put about the last 36,000 on it.
The engine is an 8.3L Cummins (mechanical) with an Allison 3060 tranny.
The problem: I am getting almost no breaking from the PRXB.
It operates fine every time the key is turned on it cycles once and I have observed this.
The cylinder extends fully and the butterfly valve appears to close. (viewing from the outside of course).
I ran a test to see if it was getting a good signal when driving , by running a wire from the switch on the throttle linkage all the way to the drivers seat and took a test drive.
When the switch was engaged my meter would show 12 + volts. and I can hear a slight change in the engine noise but hardly any breaking if at all. Tried this from 5th all the way down to 2nd gear… essentially the same results.
Any suggestions before I pull the brake of to inspect it further???
