TM-9-2320-272-23-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5

SEPTEMBER 2012
TM-9-2320-272-23-1

  TM-9-2320-272-23-1 - Page 972 of 1313

HEATER WILL NOT OPERATE IN LOW OR HIGH POSITION - Continued
CONDITION/INDICATION
IS HEATER SWITCH IN GOOD OPERATING CONDITION?
DECISION
NO - Replace heater switch (Volume 2, WP
0307). Go to Step (3) to verify problem is solved.
YES - Repair or replace circuit wire 400 (Volume 3, WP
0352). Go to Step (3) to verify problem is solved.
STEP
3.
IS YOUR ORIGINAL HEATER PROBLEM STILL PRESENT?
a.
Ensure vehicle is returned to normal operating condition.
b.
Check to see if your original heater problem still exists.
CONDITION/INDICATION
IS YOUR ORIGINAL HEATER PROBLEM STILL PRESENT?
DECISION
YES - Notify supervisor.
NO - Problem fixed.
END OF WORK PACKAGE
TM 9-2320-272-23-1
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