SJ85 AJ
213217AAA
11
Major Assemblies
Section 1 – About This Mobile Elevating Work Platform (MEWP)
1.2 Major Assemblies
The MEWP consists of four major assemblies: the
base, turret, boom assembly and platform. Refer to
Figure 02
.
1.2-1 Base
The base is a rigid one-piece weldment. The rear
axle is hydraulic motor-driven and has spring-
applied, hydraulically released brakes. The front axle
is steerable by a hydraulic cylinder and has spring-
applied, hydraulically released brakes. The rear axle is
coupled to the front axle by a drive shaft.
1.2-2 Turret
The turret rotates 360 degrees continuously. Upon
the turret are two compartments. One compartment
contains the engine, hydraulic pumps, battery and
swing drive. The other compartment contains the
base control console, main hydraulic manifold,
function valves, hydraulic and fuel tanks.
1.2-3 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. The SJ85 AJ model is equipped
with a jib, controlled by a double-acting hydraulic
cylinder.
1.2-4 Platform
The platform is constructed of a skid-resistant deck
surface allowing visibility through the deck and a
high tubular steel railing system with mid rails and
toe boards. The platform can be entered through a
tri-entry drop bar or an optional swing gate at the
side of the railing system. The platform can be rotated
in either direction. An AC outlet is also located on the
platform.
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