Why is there no air in my secondary tank?
You can bypass the dryer and drain the tanks, that wouldn’t explain the secondary not building. Get it into a shop before your on the side of the road without any air. Big Don, Dave_in_AZ, Lepton1 and 1 other person Thank this.
Is there a secondary air problem in my truck?
Also I hear pretty good and don’t hear any other leaks when truck is parked. When driving the truck Primary air stays right at 125 doesn’t move unless braking then builds right back up and stays right on money.
Where is the air supply on a Cummins ProStar?
POSSIBLE FAULT CODES SPN 3490 FMI 7 Cummins Fault 3225 SERVICE PROCEDURE N13 with SCR The engine air supply is run directly from the manifold on a Bendix ADIS dryer, used in all ProStars, and off the secondary air tank on all other units not equipped with the AD-IS dryer. Both configurations are shown below.
Where is the air supply line on a Cummins ISX 15L?
Cummins ISX 15L with SCR Since the ISX does not have an ACV the only concern we have seen on this application is that complete line is missing from the either the auxiliary manifold (AD-IS Dryer) or the secondary air tank pressure protection valve (all other dryers). Both configurations are shown below.
Why do I have two air tanks in my truck?
My truck has two air tanks a primary and secondary. I have separate gauges for each and they do not always have the same pressure in each. One would think the air pressure would equalize between the two and they would be the same. Is one isolated by a check valve or something?
What’s the secondary air gauge on a truck?
When driving the truck Primary air stays right at 125 doesn’t move unless braking then builds right back up and stays right on money. Here’s the problem though – Secondary air gauge when driving drops from 120 down to 97-100 EVERY TWO MINUTES like clockwork then builds right back up and spits at pop off I guess at the air dryer??