TB 9-2320-360-13&P-1
WAR N 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 24 vdc magnetic switch (R22) are always electrically hot and can
cause severe injury to personnel. Care must be exercised when working around these components.
VOLTAGE TEST
(1) Remove three electronic control box
assembly covers (TM 9-2320-360-20).
(2) Place positive (+) probe of multimeter
on top wire RED #2 at A/C circuit
breaker.
(3) Place negative (-) probe of multimeter
on ground.
(a) If 22 to 28 vdc are not measured,
disconnect batteries
(TM 9-2320-360-20) and repair
wire RED #2 (see WP 0057 00,
Fig j), or notify DS Maintenance.
Verify repair, go to Step 8 of this
fault.
(b) If 22 to 28 vdc are measured, go to
Step 7 of this fault.
CONTINUITY TEST
(1) Disconnect batteries
(TM 9-2320-360-20).
(2) Disconnect bottom wire RED #3 from
A/C circuit breaker.
(3) Set multimeter switch to Ohms.
(4) Is there continuity measured across A/
C circuit breaker terminals?
(a) If there is no continuity, replace A/
C circuit breaker (WP 0024 00).
Verify repair, go to Step 8 of this
fault.
(b) If there is continuity, repair wire
RED #3 (see WP 0057 00, Fig j) or
notify DS Maintenance. Verify
repair, go to Step 8 of this fault.
HETF00192
0015 00-9
