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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.
TRAILER B.O. TAIL RELAY TEST
(1)
Turn ENGINE switch to ON position.
(2)
Place BLACK OUT LIGHTS switch in the
on position.
(3)
Place BLACK OUT MARKER switch in
the on position.
(4)
Place positive (+) probe of multimeter on
wire no. 1680C at TRAILER B.O. TAIL
relay.
(5)
Place negative (-) probe of multimeter on
ground and look for 10-14 volts on
multimeter.
(6)
Place BLACK OUT LIGHTS switch in the
off position.
(7)
Place BLACK OUT MARKER switch in
the off position.
(8)
Turn ENGINE switch to OFF position.
CIRCUIT BREAKER TEST
(1)
Remove eight screws and panel
from console.
(2)
Turn ENGINE switch to ON
position.
(3)
Place positive (+) probe of
multimeter on lower terminal of
circuit breaker.
(4)
Place negative (-) probe of
multimeter on ground and look
for 10-14 volts on multimeter.
(5)
Turn ENGINE switch to OFF
position.
Change 2 2-573 (2-574 and 2-575 blank)
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