TM-9-2320-387-24-1

TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 1

DECEMBER 1997

CHANGE 1

TM-9-2320-387-24-1 - Page 366 of 1205

TM 9-2320-387-24-l

INSTRUMENTS

Cli?C;i

,&s>

KNOWN INFO

~Sf .,o~sDIAGNOSllC

FLOWCHART

I

1

ELECTRICAL

GAUGES OK

POSSIBLE

PROBLEMS

AIR RESTRICTION

GAUGt

VACUUM LINE

KNOWN lNF0

AIR RESTRlCTlON

GAUGE

OK

VACUUM

LINE OK

POSSIBLE

PROBLEMS

HEATER FAN MOTOR

WIRING

HEATER FAN SWmCH

ClRCUlT BREAKER

1

DOES THE AIR FILTER

RESTRICTION GAUGE WORK?

WITH THE ROTARY SWITCH IN

THE RUN POSITION, DOES THE

HEATER FAN WORK?

OPTIONS

VISUAL

REASON

FOR QlJESllON

/

The heater fan should wok

with

therotaryswitchintheRUN

&@_(c&

-On.

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