TM 9-2320-387-24-l
INSTRUMENTS CIRCUIT
DIAGNOSTIC FLOWCHART
KNOWN INFO
ELECTRICAL
GAUGES OK
INSPECT VACUUM HOSE FROM
AIR FILTER HOUSING TO
RESTRICTION GAUGE. IS THE
LINE INTACT?
POSSIBLE
PROBLEMS
AIR RESTRICTION
GAUGE
VACUUM HOSE
I
REASON FOR QUESTION
R the line leaks, any pressure
differential won’t be seen by the
gauge.
I
KNOWN INFO
I
VACUUM HOSE OK
POSSIBLE
PROBLEMS
AIR RESTFtICTlON GAUGE
DOES THE GAUGE READ YELLOW
WHEN VACUUM IS APPLIED TO
THE HOSE AND DOES IT HOLD
THE READING?
OPTIONS
APPLY VACUUM TO HOSE
(YOU CAN JUST SUCK ON
THE HOSE TO TEST IT).
REASON FOR QUESTlON
Thii will check gauge operation.
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2-360
