hydraulically operated, adjustable platform with a
ladder assembly. It has free swivel caster assemblies,
with each having a foot lever-actuated mechanical
brake and lock mechanism. The platform is equipped
with safety guardrails and locking pins that lock the
extension scissors. This prevents the platform from
collapsing in the event of a hydraulic system failure.
The height range is 7 to 12 feet. Overall height of the
B-5A is 10 feet 7 inches lowered and 15 feet 6 inches
raised, and it has a weight bearing capacity of 600
B-2 MAINTENANCE PLATFORM.--The B-2
maintenance platform (fig. 1-29) consists of a fixed
height, 10-foot lower structure, a variable height upper
structure, and a manual pump actuated hydraulic
system for raising and lowering the upper structure.
The platform has guardrails and the steps have
handrails. It has free swivel caster assemblies, with
Figure 1-30.--A/S48M-2 diesel servicing platform.
each having a foot lever-actuated mechanical brake and
lock mechanism. The lower structure also includes four
jack pads that act as brakes. The height range is from 13
to 20 feet. Overall height of the B-2 is 16-1/2 feet
position personnel and equipment within functional
lowered and 23-1/2 feet raised, and it has a weight
proximity of a work site at a maximum elevation of 44
bearing capacity of 600 pounds. The work platform is 4
feet. The platform turntable is capable of 360-degree
feet by 4 feet square.
rotation in either direction. Platform functions are
primarily controlled from the upper control box;
A/S48M-2 (DIESEL) AND A/S48M-3 (ELEC-
however, some functions can be controlled from the
TRIC) SERVICING PLATFORMS.--The plat-
lower control box. All platform functions are
forms, A/S48M-2 diesel powered (fig. 1-30) and
electrohydraulic. These platforms have four-wheel
A/S48M-3 electric powered (fig. 1-31) are used to
drive with steering accomplished by hydraulic steering
cylinders on the front and rear axles.
NET-4 ENGINE TRANSPORT TRAILER.--
The Net-4 engine transportation trailer (fig. 1-32) is a
four-wheel trailer designed for transporting large jet
engines and airframe sections. The towbar is
extendable for transporting unusually long loads.
Figure 1-29.--B-2 maintenance platform.
Figure 1-31.--A/S48M-3 electric servicing platform.