SJ 46A & SJ 46AJ
December 2007 Page 15
Section 2 - Operation Major Assemblies
2.3 Major Assemblies
The aerial platform consists of four major assemblies:
the base, turret, boom assembly and platform.
2.3-1 Base
The base is a rigid one-piece weldment. Models
equipped with dual-fuel engine have mounting straps
for propane tank on each side. The rear axle is hydraulic
motor-driven and has a spring-applied, hydraulically
released brakes. The front axle is steerable by a
hydraulic cylinder. The rear axle is coupled to the front
axle by a drive shaft.
2.3-2 Turret
The turret rotates 360 degrees continuously. Upon
the turret are two compartments. One compartment
contains the engine, hydraulic pumps and battery. The
swing drive is in the center of the turret underneath
the main boom. The other compartment contains the
base control console, main hydraulic manifold, function
valves, the hydraulic and fuel tanks.
2.3-3 Boom Assembly
The boom assembly consists of the riser, telescoping fly
and main boom assembly. The riser is mounted on the
turret with the main boom attached to the riser. The riser
mechanism uses two double-acting hydraulic cylinders
with holding valves to control vertical movement.
AJ models are equipped with a 60 in. (152 cm) jib,
controlled by a double-acting hydraulic cylinder.
2.3-4 Platform
The platform is constructed of a skid-resistant deck
surface allowing visibility through the deck and a 43 in.
(110 cm) high tubular steel railing system with mid
rails and 6 in. (15 cm) toe boards. The platform can be
entered through a swing gate at the side of the railing
system. The platform can be rotated in either direction.
An optional AC outlet is also located on the platform.
2.4 Serial Number Nameplate
The serial number nameplate, located at the rear of the
aerial platform, lists the following:
Model number
Serial number
Maximum capacities
Maximum number of persons permissible on the
platform
Maximum manual force
Aerial platform weight
Maximum drivable height
Maximum platform height
System pressure
Lift pressure
Maximum wheel load
Model year
Voltage
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