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 - Page 812 of 1313
BLACKOUT DRIVE OR BLACKOUT MARKER LIGHT INOPERATIVE - Continued
CONDITION/INDICATION
ARE SOCKETS AND TERMINALS CLEAN AND IN GOOD CONDITION?
DECISION
NO - Blackout drive light defective. Replace defective blackout drive light (Volume 2, WP
0326). Go to Step (8)
to verify problem is solved.
NO - Composite light defective. Replace defective composite light (Volume 2, WP
0327). Go to Step (8) to verify
problem is solved.
YES - Go to Step (3).
STEP
3.
ARE LAMP HOLDERS IN GOOD OPERATING CONDITION?
T0747DAA
Figure 3.
Lamp Holder.
Visually check lamp holders for loose and broken wire terminals. Refer to point to point schematic.
CONDITION/INDICATION
ARE LAMP HOLDERS IN GOOD OPERATING CONDITION?
DECISION
NO - Repair or replace broken wire (Volume 3, WP
0352). Go to Step (8) to verify problem is solved.
YES - Go to Step (4).
TM 9-2320-272-23-1
0094
0094-3
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