TM 9-2320-360-10
2-13. CENTRAL TIRE INFLATION SYSTEM (CTIS) OPERATION
a. CTIS Operation
(1) Start engine (para 2-12).
CAUTION
When CTIS rotary selector switch is set to EMERGENCY do not
exceed 5 mph (8 km/h). Distance traveled should not exceed 15
miles (24 km).
When LOW AIR indica tor lights (red), CTIS will not operate due
to low air pressure.
NOTE
CTIS ON/OFF switch should remain ON unless a system failure
occurs.
If HET Tractor is stopped during CTIS selection change, an
increase in engine rpm is required to provide adequate air
supply.
CTIS automatically turns off if HET Tractor air pressure drops
below 85 psi (621 kPa) to provide priority to HET Tractor air
brake system. CTIS will automatically resume operation when
air pressure increases to 110 psi (758 kPa) or above.
During CTIS operation, it is normal to hear air coming out of
wheel valve when inflating or deflating.
If CTIS malfunctions, turn the ON/OFF switch to OFF then turn
ON. This action will reset the controller and may eliminate the
problem.
(2) Slowly press down on accelerator pedal (1).
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