core (IWRC) and shall be
required length and size of each
equipped with end chain and
sling cable. A silhouette of the
hook. An integral, adjustable,
vehicle showing the center of
automatic safety brake shall be
gravity shall be provided on the
provided. The winch shall be
transportation plate. Stenciling
equipped with a roller guide.
or other suitable marking shall
Angles of the winch driveline U-
identify all lifting and tie down
joints shall be not greater than
attachments.
Tie
down
16.5 degrees.
markings shall clearly indicate
A winch drum guard shall be
that
the
attachments
are
furnished.
The guard shall
intended for the tie down of the
confine the cable to the area
equipment on the carrier (also
between the drum flanges. The
see 3.1.1.21). See 4.4
guard shall consist of not less
MHW
WINCH HYDRAULIC
than 6.4 mm (0.25 inch) vertical
When code MHW is specified, a
side plates, conforming to the
winch assembly mounted on the
outside radius of the drum
front of the vehicle shall be
flanges. Six bars, 9.5 mm by 32
provided. The winch shall be
mm (0.375 inch by 1.25 inches),
powered by the manufacturer's
shall be welded to the vertical
standard power takeoff or
side plates. Three bars shall be
powered hydraulically.
If
located on the top and spaced
hydraulically
powered,
the
equally on the top radius, and
hydraulic system shall comply
three bars shall be located on
with
the
requirements
in
the bottom and spaced equally
paragraph 3.1.1.11. The winch
on the bottom radius.
The
shall conform to SAE J706. The
vertical distance between the
winch shall be of the single drum
vertical side plates and the drum
type and shall have one forward
flanges shall be not more than
and one reverse speed.
All
half
the
specified
cable
winch controls shall be mounted
diameter.
inside the cab. Winch controls
The chassis bumper shall be
shall be located to provide no
mounted forward of the winch.
interference with the entrance or
The bumper shall be either a
exit of the driver. The winch
channel or a pipe type front
shall have a rated single line pull
bumper. When a pipe type front
capacity of not less than 89 kn.
bumper is furnished, the nominal
(20,000 pounds) pull on the bare
diameter shall be not less than
drum. The winch line speed on
75 mm (three inches), and the
the bare drum shall be between
wall thickness shall be not less
4.6 and 9.1 meters/min (15 and
than that specified in schedule
30 feet per minute) at an engine
40 of ASTM A53. The pipe type
speed equal to 35 percent at
front bumper shall have half-
engine-governed speed.
The
round ball ends. The open area
winch shall be wound with not
on either side of the winch
less than 56 m (185 feet) of 16
between the bumper and
mm (0.625 inch) diameter,
grill/fenders shall be covered
preformed, 6x37, improved plow
with
a
combination
step
steel, independent wire rope
plate/gravel guard. The step
Federal Standard 807M
Page 42 of 65
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