TM-9-2330-238-14
CHASSIS, SEMITRAILER: 6-TON, 4-WHEEL M295A1; SEMITRAILER, VAN: EXPANSIBLE, 6-TON, 4-WHEEL M313; SEMITRAILER, VAN: SHOP, FOLDING SIDES, 6-TON, 4-WHEEL M447 AND M447C; SEMITRAILER, VAN: REPAIR PARTS, SHOP EQUIPMENT, 6-TON, 4-WHEEL M749; SEMITRAILER, VAN: REPAIR PARTS STORAGE, 6-TON, 4-WHEEL M750
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL
JULY 1992
TM-9-2330-238-14 - Page 67 of 462
TM
9-2330-238-14
2-14.
EXPANDING
AND
RETRACTING
VAN
BODIES
(M447,
M447C,
M749,
AND
M750)
(Con’t).
NOTE
Bottom
of side panels
are identified
by edge
containing
deflector
strip and seal.
(4)
Position
side
panels,
in numbered
order, leaning against
opened
lower
side doors
with bottom
of
side panels
facing
down.
WARNING
Clean up ail excess solutions
or compounds
from extrusions
and side panels.
Failure to
do so could result in slippery
surfaces
which
could
result in injury to personnel.
NOTE
If silicone
compound
is not
readily
available,
a
solution
of
soapy
water
may
be
substituted.
(5)
Apply
silicone
compound
(Item 12, Appendix
E) to rubber seals
of side panels
to ease installation.
(6)
While facing
ends of opened
side doors,
raise first panel
into position.
Leave about
1 in. (2.54 cm)
between
body
post
and side
panel
so pin on lower body
door will
enter clearance
hole at bottom
of side
panel.
(7)
Tilt top of side panel
inward
until it contacts
rubber
seals
along
end of upper
side door.
(8)
Push upward
and inward
on side panel
until side paneI
is seated
along
top
and bottom.
(9)
Slide
side
panel
toward
body
post
until pin in lower
door
engages
hole
in bottom
of side panel.
CAUTION
Ensure
that
hexagonal
wrench
is fully
engaged
in male
lock.
DO
NOT,
under
any
circumstances,
force
engagement
of male
lock
into female
lock.
Tighten
locks
only
until
a
moderate
positive
pressure
is obtained.
Any
attempts
to
pull
side
panels
together
will only shear teeth
of male lock or pull it out of position.
NOTE
If engaging
corner
locks is difficult, grasp edge
of upper side door and pull downward
while
locks
are engaged.
This causes
weight
of side panel to be partially transferred
from
lower
to upper
door through
counterbalance
system.
This in turn causes
upper
door to deflect
down enough
to center
locks. With clearance
at top and bottom
doors
equal,
corner
locks
along sides
of doors
may be tightened.
(10)
Remove
locking wrench
from jack storage
box. Use wrench
to partially
engage
male lock in mating
case
of end panel.
Partially
engage
male
locks
on body
post to mating
cases
in side
panel.
(11)
Male locks near outer ends of upper door and lower door should
be partially
engaged
in their mating
cases
in side
panel.
(12)
While facing
open van, lift up second
side panel and position
it as close
as possible
to previous
side
panel.
(13)
Tilt top of side
panel
inward
until side
panel
contacts
rubber
seals
along
end of upper
side door.
(14)
Ensure that pins aline with clearance
holes
at bottom
of side panel.
Push upward
and inward until
side
panel
is seated
top and bottom.
(15)
Partially
engage
locks along
upper edge
of side panel, then partially
engage
locks
along
previous
side panel
and finally
along
lower
edge.
(16)
Loosen
and/or tighten
locks along
previous
side panel,
until clearance
is X2 in. (2.38 mm) between
two side
panels.
2-21
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