12-03-2017, 05:08 PM
More I think about it, the more I think that there has to be something wrong with the AD9 Air dryer purge valve not opening at 120-130 psi.
At idle the D2 governor will purge at 120 psi. I can hear it.
Once driving, if the D2 opens to purge at 120 psi and sends air through the line to the dryer. If the dryer purge valve is stuck closed or sticks, the system will build pressure to 160 psi...Am I on the right track ?
Wondering if there is an adjustment for the purge valve on the air dryer...maybe the mechanic messed it up when they installed it. With all the air leaks I had in the brake and aux circuits the system was bleeding off pressure on its own.
At idle the D2 governor will purge at 120 psi. I can hear it.
Once driving, if the D2 opens to purge at 120 psi and sends air through the line to the dryer. If the dryer purge valve is stuck closed or sticks, the system will build pressure to 160 psi...Am I on the right track ?
Wondering if there is an adjustment for the purge valve on the air dryer...maybe the mechanic messed it up when they installed it. With all the air leaks I had in the brake and aux circuits the system was bleeding off pressure on its own.
MG