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.
A/C circuit breaker, A/C relay, and 24vdc magnetic switch (R22) are always electrically hot and can
cause severe injury to personnel. Care must be exercised when working around these components.
CONTINUITY TEST
(1) Remove dashboard cover
(TM 9-2320-360-20).
(2) Disconnect A/C switch harness from A/
C control switch.
(3) Set A/C control switch to ON position
(low, medium, or high blower speed)
position (WP 0008 00).
(4) Set multimeter switch to ohms.
(5) Is there continuity measured across A/
C control switch compressor contacts?
(a) If there is no continuity, replace A/
C control switch (WP 0021 00).
Verify repair, go to Step 13 of this
fault.
(b) If there is continuity, repair A/C
switch harness brown wire (See
WP 0057 00, Fig j) or notify DS
Maintenance. Verify repair, go to
Step 13 of this fault.
VERIFY REPAIR
(1) If removed, install A/C evaporator
subsystem (WP 0036 00).
(2) If removed, install dashboard cover
(TM 9-2320-360-20).
(3) Install doghouse door (WP 0028 00).
(4) Start engine (TM 9-2320-360-10).
(5) Operate A/C for 10 minute, at high A/C
blower speed (WP 0008 00).
(a) If A/C does not provide cold air to
A/C ducts, turn engine switch and
A/C control switch to OFF position
and notify DS Maintenance.
(b) If A/C provides cold air to A/C
ducts, fault has been corrected.
END OF WORK PACKAGE
HETF00450
0017 00-15/(0017 00-16 Blank)