SECTION V: TROUBLESHOOTING
TM 9-2350-256-20
WARNING
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry contacts a metal
surface a direct short may result in instant
heating of tools, damage to equipment, and
injury or death to personnel.
K Place jumper wire from wire 27K to terminal of MECH
TRANSMISSION OIL PRESSURE light. Place red lead
of multimeter on terminal of light and black lead to
ground. Turn MASTER switch on and check for voltage.
Turn MASTER switch OFF. If voltage is present, go to
step L. If voltage is not present, replace MECH
TRANSMISSION OIL PRESSURE light (see paragraph
6-8).
L Reconnect connector to MECH TRANSMISSION OIL
PRESSURE light. Disconnect gage panel to bulkhead
wiring harness from gage panel. Place a jumper wire
from pin K to socket K. Place red lead of multimeter on
pin L of wire 72A and black lead to ground. Turn
MASTER switch on, and check for voltage. Turn
MASTER switch OFF. If voltage is present, go to step M.
If voltage is not present, repair/replace wire 72A of gage
panel wiring harness (see paragraph 6-44).
M Reconnect gage panel to bulkhead wiring harness to gage
panel. Disconnect gage panel to bulkhead wiring harness
from mechanical transmission low oil pressure switch.
Place red lead of multimeter in wire 72A and black lead
to ground. Turn MASTER switch on, and check for
voltage. Turn MASTER switch OFF. If voltage is
present,
replace
mechanical
transmission
low
oil
pressure switch (see paragraph 6-18). If light continues
to remain lit, with the mechanical transmission operating,
the mechanical transmission has low oil pressure. If
voltage is not present, repair/replace wire 72A of gage
panel to bulkhead wiring harness (see paragraph 6-45 for
dual voltage; 6-46 for single voltage).
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