02-25-2019, 01:13 PM
We can deduce a couple of things from this. The first is that your PPV Pressure Protection Valves on both your primary and secondary brake tank need to be replaced. Your brake tanks should not leak past about 90 psig in three hours. What would make them both go kaput, moisture leading to rust leading to debris in the system.
Second, you have a moderate air leak somewhere, and you may have found in either the Dupree valve and/or the actuator that operates the valve. Both can cause a hefty air loss.
Take some time and read a basic primer on how the air system works, and it will help you understand the brake side of the system. https://www.suspensionspecialists.com/te...k_2009.pdf Don't panic, the first couple of pages have the concepts you need to grasp. Then take a look at the posts that @"rheavn" made on finding air leaks.
Second, you have a moderate air leak somewhere, and you may have found in either the Dupree valve and/or the actuator that operates the valve. Both can cause a hefty air loss.
Take some time and read a basic primer on how the air system works, and it will help you understand the brake side of the system. https://www.suspensionspecialists.com/te...k_2009.pdf Don't panic, the first couple of pages have the concepts you need to grasp. Then take a look at the posts that @"rheavn" made on finding air leaks.
Richard and Rhonda Entrekin
99 Newell, 512
Maverick Hybrid Toad
Inverness, FL (when we're home
)