TB 9-2320-360-13&P-1
WARN I N G
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.
Ensure engine is cool before performing visual inspection; be sure to wear protective goggles to prevent
personal injury.
Ensure A/C hoses are cool before performing visual inspection. Failure to follow this warning may
result in severe burns.
VISUAL INSPECTION
NOTE: Perform Steps (1) through (4) only if
system is not at operating temperature.
(1) Start engine (TM 9-2320-360-10).
(2) Turn A/C control switch to ON (high
blower speed) position (WP 0008 00).
(3) Operate system for 5 to 10 minutes.
(4) Turn engine switch to OFF position.
(5) Inspect A/C hose at output of A/C
(a) If A/C hose is not hot, go to Step 8
of this fault.
(b) If A/C hose is hot, go to Step 3 of
this fault.
AUDIBLE INSPECTION
NOTE: Allow system to cool before
continuing.
(1) Disconnect A/C compressor receiver/
dryer harness connector from A/C high
pressure switch.
(2) Install jumper across A/C compressor
receiver/dryer harness, A/C high
pressure switch connector terminals.
(3) Turn engine switch to ON position
(TM 9-2320-360-10).
(4) Loosen air line at output of A/C engine
fan control solenoid valve
(WP 0026 00).
(a) If air pressure is not present at the
A/C engine fan control solenoid
valve, go to Step 7 of this fault.
(b) If air pressure is present at the A/C
engine fan control solenoid valve,
turn engine switch to OFF position,
tighten air line, and go to Step 4 of
this fault.
HETF00457
0019 00-5