with
the
requirements
in
on the bottom radius.
The
paragraph 3.1.1.10. The winch
vertical distance between the
shall conform to SAE J706. The
vertical side plates and the drum
winch shall be of the single drum
flanges shall be not more than
type and shall have one forward
half
the
specified
cable
and one reverse speed.
All
diameter.
winch controls shall be mounted
The chassis bumper shall be
inside the cab. Winch controls
mounted forward of the winch.
shall be located to provide no
The bumper shall be either a
interference with the entrance or
channel or a pipe type front
exit of the driver. The winch
bumper. When a pipe type front
shall have a rated single line pull
bumper is furnished, the nominal
capacity of not less than 89 kn.
diameter shall be not less than
(20,000 pounds) pull on the bare
75 mm (three inches), and the
drum. The winch line speed on
wall thickness shall be not less
the bare drum shall be between
than that specified in schedule
4.6 and 9.1 meters/min (15 and
40 of ASTM A53. The pipe type
30 feet per minute) at an engine
front bumper shall have half-
speed equal to 35 percent at
round ball ends. The open area
engine-governed speed.
The
on either side of the winch
winch shall be wound with not
between the bumper and
less than 56 m (185 feet) of 16
grill/fenders shall be covered
mm (0.625 inch) diameter,
with
a
combination
step
preformed, 6x37, improved plow
plate/gravel guard. The step
steel, independent wire rope
plate/gravel guard shall be
core (IWRC) and shall be
secured to the front bumper and
equipped with end chain and
shall be not less than 6.4 mm
hook. An integral, adjustable,
(0.25 inch) or greater than 9.5
automatic safety brake shall be
mm (0.375 inch) from the
provided. The winch shall be
chassis sheet metal. The step
equipped with a roller guide.
plate/gravel guard shall be
Angles of the winch driveline U-
fabricated of not less than 14
joints shall be not greater than
gage (1.897 mm) (0.0747 inch)
16.5 degrees.
steel tread plate exclusive of
A winch drum guard shall be
projections.
The
step
furnished.
The guard shall
plate/gravel guard shall be
confine the cable to the area
capable of supporting 1460
between the drum flanges. The
kg/m2 (300 pounds per square
guard shall consist of not less
foot).
The step plate/gravel
than 6.4 mm (0.25 inch) vertical
guard shall be supported so that
side plates, conforming to the
it will not deflect more than 3.2
outside radius of the drum
mm (0.125 inch) under the
flanges. Six bars, 9.5 mm by 32
required load.
mm (0.375 inch by 1.25 inches),
MIL
DATA PLATES AND DD250
shall be welded to the vertical
When code MIL is specified, the
side plates. Three bars shall be
following
shall
be
supplied.
located on the top and spaced
1.
A Nameplate as described in
equally on the top radius, and
paragraph 5.6.1 of MIL-HDBK-1223
three bars shall be located on
"NONTACTICAL
WHEELED
the bottom and spaced equally
VEHICLES TREATMENT, PAINTING,
Page 53 of 79
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