stack unit loads of supplies and equipment. Standard
warehouse forklifts have lifting capacities from 2,000 to
15,000 pounds and lifting heights from 100 to 210
inches.
Warehouse forklifts are equipped with a
telescopic mast that permits loads to be lifted beyond the
height of the collapsed mast. The height the forks can
raise before the inner slides move upward from the mast
and increase the overall height is called free lift.
4K ROUGH-TERRAIN (RT) FORKLIFT
The 4K rough-terrain (RT) forklift (fig. 8-2) is a
diesel engine-driven, rubber-tired, self-contained, rider
type of mechanized materials-handling vehicle. They
are designed to lift loads of 4,000-pound capacity with
a 24-inch load center to a maximum height of 100
inches. The lifting forks are mounted on the front of the
vehicle and the engine faces the rear. Controls for
operating the lifting forks (lifting, tilting, rotating, and
side shifting) are located to the right when the operator
is sitting in the operator’s seat.
The 4K (RT) forklift is designed for the loading and
unloading of flatcars, flatbed trailers, cargo aircraft, and
landing craft. Additionally, the 4K (RT) is used for
stocking, unstacking, and transporting heavy-crated
boxes, containers, and palletized loads of heavy equipment
and supplies over unprepared and unstable surfaces. This
forklift is the primary forklift used in rough terrain, such
as a beach, in deep sand, or where the terrain is covered
with ice, snow, or mud, or where hard standing is not
available. The 4K (RT) forklift can be used both indoors
and outdoors and is capable of fording streams or pools of
water up to 30 inches deep. This forklift can be transported
by tractor-trailer or by military aircraft.
The 4K forklift may be driven to project sites under
its own power without any special preparation; however,
when performing the prestart operational check, you
should ensure the safety pin (fig. 8-3) is disengaged
before operating. The safety pin prevents the forklift
Figure 8-3.—Safety pin location.
Figure 8-2.—4K rough-terrain (RT) forklift.
8-2
