My Parking Brake Will Not Release
My Ultimate Freedom with a Cummins ISL 400 and Allison transmission will not let me release the parking brake. I push it in to release, and it just pops back out. I have noticed that it has been do...
Forum Discussion
happy-2 wrote:
Can you pump the brake peddle till the compressor comes on and see how high the pressure goes?
Pressure goes up OK, to 100 psi.
