Air Parking Brake
We recently bought a 2014 Allegro RED on the Freightliner chassis. I am new to diesels with air brakes. After I am parked for several days, the air brake button is hard to release. Push it in, and i...
Forum Discussion
Ivylog wrote:
You need to read up on air brake operation. Until the air pressure gets above 60 psi it's not going to stay in... brakes released.
Right. My understanding is that the emergency/parking brakes are applied using springs and it takes air pressure to release the parking brake. So yes, there must be sufficient air pressure to release them.
