If activating the manual overrides does not determine which solenoid is leaking, change out one
solenoid at a time, replenishing the supply air each time by starting the truck and building the air
supply with the TIREBOSS SYSTEM “SHUT OFF” at the controller. You are checking the supply
side of the circuit and the TIREBOSS system should be off for this portion of the test.
Once again this will not allow a tire pressure drop as it is independent of the tire supply circuit.
Please note that although the solenoids are supposed to be air tight, a slight leak here will not
cause any operational problems with the tire pressure control or the air brake system. It would
never be noticed with the truck running but would allow a slow leak down of the wet tank pressure
overnight, but only down to the set point of the TIREBOSS pressure protection valve, approx. 95-
100 psi.
For a fi nal test, hook up all of the air lines that were removed, leaving the exhaust manifold off,
open the wheel valves and start the truck with the TIREBOSS controller off.
If there are no leaks, turn the controller on and allow the tire pressures to stabilize (NOT INFLAT-
ING OR DEFLATING) so the solenoids are in the NEUTRAL–CLOSED POSITION.
If there are no leaks install the exhaust manifold.
SERVICE MANUAL
TIREBOSS
TM
Tire Pressure Control
3-14
f:tec\manuals\Service\SERVICEv5.indd - V6-0615
To Next Page
Loading...
