TM 9-2320-363-20-1
Section II.2. TROUBLESHOOTING AND TESTING THE CENTRAL
TIRE INFLATION SYSTEM (CTIS)
The Central Tire Inflation System uses a dedicated
pneumatic system plumbed from the vehicle's existing
supply (wet) tank. Air lines between the Pneumatic
Control Unit and the Quick Release Valves (QRV) are
called "Upper Control Lines". Air lines between the
QRVs and the Wheel Valves are called "Lower Control
Lines".
Change 3 3-92.11
