MM2600, Lesson 1
outriggers that are also hydraulically operated. The outriggers provide stability when operating on a
slope or with the boom fully extended. With minimum boom extension and outriggers in place, the
crane has a lift capacity of 10,000 pounds. With the boom fully extended without outriggers in place,
the lift capacity is 1,800 pounds. Variations in boom extension and outrigger use allow varied lift
capabilities between 1,800 and 10,000 pounds. The crane's bulldozer blade is used to clear a path for
the crane through normal debris or snow.
The 20-ton wheel-mounted crane is used for handling containerized loads of ammunition, palletized
separate-loading projectiles, and large guided missile containers. It is wheel mounted and designed for
rough terrain. The boom is a 30-foot girder type, cable-winch operated with a block-and-tackle cable
hoist. The cable has a lift capacity of 40,000 pounds (20 tons).
pound, and 4,000-pound rough terrain forklifts and the 4,000-pound electric forklift.
The 6,000-pound rough terrain forklift (RTFL) (figure 1-7) has been the workhorse of the ammunition
field for more than a decade. It can operate over all types of terrain. Its fork assembly can hydraulically
extend, retract, raise, lower, tilt forward, tilt backward, and tilt sideways. The RTFL has three steering
options, using both front and rear axles (figure 1-8). They are standard two-wheel steering; cramp
steering, which gives it a short turning radius; and crab steering, which enables it to move sideways at
a 20-degree angle. The 6,000-pound RTFL is also equipped with two-wheel and four-wheel drive,
enabling it to traverse mud, sand, and steep grades with ease.
Figure 1-7. 6,000-pound Rough Terrain Forklift.
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