* TM 9-2320-387-24-l
INSTRUMENTS CIRCUIT
KNOWN INFO
WIRING OK
POSSIBLE PROBLEMS
GAUGE
SENDING UNIT
KNOWN INFO
WlRlNG OK
POSSIBLE PROBLEMS
GAUGE
SENDING UNlT
RECONNECT WIRE 27H AT THE
OIL PRESSURE GAUGE. DISCON-
NECT WIRE 36A AT THE OIL
PRESSURE SENDING UNIT.
WITH THE ROTARY SWITCH
IN THE RUN POSITION, DOES
THE GAUGE READ OFF SCALE
ABOVE 120 PSI (827 kPa)?
DIAGNOSTIC FLOWCHART
r OPTIONS
TRY IT.
REASON FOR QUESTlON
This will detemine if the
gauge can respond to an
input signal.
TEST OPTIONS
WITH THE ROTARY SWITCH IN
TRY rr.
THE RUN POSITION, SHORT WIRE
36A TO ENGINE GROUND AT THE
OIL PRESSURE SENDING UNIT.
DOES THE GAUGE READ AT OR
BELOW ZERO?
REASON FOR QUESTION
This will determine if the
I
gauge can respond to an
.
.
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