Ronmar
Well-known member
- 3,813
- 7,407
- 113
- Location
- Port angeles wa
Well the wet tank typically has feeds to-from:
air dryer
both service tanks via check valves(prevents backflow and crossover)
ctis manifold and fan solenoid in the passenger dash
hydraulic manifold for cab suspension
governor on air compressor and front red gladhand check valve in front bumper below red gladhand location.
check-valve in the dryer output could be leaking back
check valve in the front bumper could be leaking out the front gladhand
ctis or fan solenoid could be leaking in the dash
hydraulic control valve for cab suspension could be leaking
governor could be leaking.
one way to go about this is to remove and cap the outlet lines and monitor leakage. You of course cannot remove and cap the governor line or the air dryer line and still run the truck, so will have to provide external air if you want to eliminate those.
you can also make a simple leakdown tester With a male quick connect, hooked to a valve and into one port of a T fitting. On the second port of the T fitting you place a gauge and the 3rd port an appropriate sized line fitting. You can then disconnect the lines off of the tank and connect them to this test rig. Open the valve and apply 120PSI if air on the gauge then close the valve and monitor the gauge for signs of leakage on that circuit…
air dryer
both service tanks via check valves(prevents backflow and crossover)
ctis manifold and fan solenoid in the passenger dash
hydraulic manifold for cab suspension
governor on air compressor and front red gladhand check valve in front bumper below red gladhand location.
check-valve in the dryer output could be leaking back
check valve in the front bumper could be leaking out the front gladhand
ctis or fan solenoid could be leaking in the dash
hydraulic control valve for cab suspension could be leaking
governor could be leaking.
one way to go about this is to remove and cap the outlet lines and monitor leakage. You of course cannot remove and cap the governor line or the air dryer line and still run the truck, so will have to provide external air if you want to eliminate those.
you can also make a simple leakdown tester With a male quick connect, hooked to a valve and into one port of a T fitting. On the second port of the T fitting you place a gauge and the 3rd port an appropriate sized line fitting. You can then disconnect the lines off of the tank and connect them to this test rig. Open the valve and apply 120PSI if air on the gauge then close the valve and monitor the gauge for signs of leakage on that circuit…
