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TM 9-2320-360-20-1
WARNING
Jewelry can catch on equipment and cause injury
or short across electrical circuit and cause severe
burns or electrical shock. Remove rings,
bracelets, watches, necklaces, and any other
jewelry before working around HET Tractor.
NOTE
The CTI system initially and periodically checks
for system air leaks The CTIS will display a
flashing LOW AIR light and shut off if 6 PSI cannot
be maintained by the CTI system. The manifold
will click during this check for approximately 1.5
minutes.
Air system pressure must be 120 psi (827 kPa)
before beginning troubleshooting. If air pressure
gage does not indicate 120 psi (827 kPa), wait for
system air pressure to build before beginning
troubleshooting.
CTIS air lines are pressurized only when CTIS is
in Inflate, deflate, or test cycles.
Tests 1 thru 5 can be made consecutively while
the CTI system is in the inflate cycle.
Normal inflation time from EMERGENCY to
HIGHWAY setting is approximately 12 minutes at
high idle.
Excess inflation times, sometimes accompanied
by a flashing LOW AIR light is normal if engine is
at idle RPM and/or air operated accessories are
being used.
PRESSURE SWITCH TEST
(1)
Disconnect single wire connector to low pressure
switch
(2)
Turn engine switch to ON position
(TM 9-2320-360-10).
(3)
Move CTIS switch to ON position
(TM 9-2320--360-10).
(4)
Touch the power manifold end of the connector to
known good ground and observe low air indicator
light
(5)
Turn engine switch to OFF position and move
CTIS controller switch to OFF position
(TM 9-2320-360-10).
(6)
Connect single wire connector for low pressure
switch
Change 1 2-859
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