TM-9-2320-272-10
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; OPERATOR'S MANUAL
SEPTEMBER 2004
CHANGE 2
TM-9-2320-272-10 - Page 267 of 481
TM 9-2320-272-10
2-158
a.
General.
Expansible van trucks transport communication equipment into the
field. Van bodies are 8 ft (2.4 m) wide in travel position. In the field, van sides expand
to nearly 14 ft (4.3 m).
b.
Selecting Operating Site.
Whenever possible, position van on level, firm ground.
.
WARNING
.
Block vehicle wheels if operating site is on a grade, no matter
how slight. Failure to do this will result in injury or death.
c.
Leveling Van Body.
(1)
Remove four adjustable leveling jacks (4) and foot pads (5) from stowage
compartment in rear of van body.
(2)
Attach foot pad (5) to bottom of each jack (4). Assemble and install inner
and outer tubes of jack (4) and adjust length to approximate height of brackets (1)
(marked H) at each corner of van. Secure jack (4) with chained pin (7).
(3)
Insert upper foot (2) of jack (4) into bracket (1). Install jack handle (3) and
unscrew jack (4) until foot pads (5) are in firm contact with ground. Anchor each jack
foot pad (5) with two jack spikes (6). Do not attempt to raise entire van off of ground
with leveling jacks.
(4)
Repeat procedure at each corner of van until body is level.
d.
Expanding Van Body.
.
WARNING
.
Open van door slowly. Personnel may be on
ladder. Use caution when using ladder.
CAUTION
Vehicle must be approximately level for
expansion or retraction of van body.
NOTE
This operation requires two crewmembers.
(1)
Ladder setup:
(a)
Release toggle clamp (11) secur-
ing right ladder (10).
(b)
Lift ladder (10) up to remove.
(c)
Install ladder (10) in brackets below rear doors.
(2)
Remove chained pin (16) from lock handle (15). Pull handle (15) out and
disengage handle (15) end from retaining bracket (17). Repeat procedure at all four
van corners.
2-27. OPERATION OF EXPANSIBLE VAN TRUCK
7
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