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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
bums or electrical shock. Remove
rings, bracelets, watches,
necklaces, and any other jewelry
before working around HET
Tractor.
NOTE
· 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.
Inspect CTIS power manifold and controller
to see that all connectors are fully plugged in.
DEFLATION VALVE VOLTAGE TEST
(1)
Manually set tire pressures to 75 psi (517 kPa)
(2)
Disconnect deflation valve connector from power manifold
(3)
Place positive (+) probe of multimeter on deflation valve
connector, position 2.
(4)
Place negative (-) probe of multimeter on known good
ground.
(5)
Turn CTIS selector switch to CROSS COUNTRY position
(TM 9-2320-360-10)
(6)
Turn engine switch to ON position (TM 9-2320-360-10).
(7)
Move CTIS switch to ON position and/or press START
button (TM 9-2320-360-10). Look for 22-28 volts on
multimeter.
(8)
Turn engine switch to OFF position (TM 9-2320-360-10).
(9)
Connect deflation valve connector to power manifold.
Change 1 2-831
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