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Figure 2-11. Reach Diagram SJB-33N
Figure 2-12. Dimensional Diagram SJKB-33N
SECTION 2, Page 14
PURPOSE OF EQUIPMENT
The SKYJACK SJKB Boom Work Platform are designed
to transport and raise personnel and tools to overhead
work areas.
USE OF EQUIPMENT
The work platform (Figure 1-2A/B.)are highly
maneuverable work station. Models SJKB-33N, 33i and
40i are designed for slab-type industrial applications.
Models SJKB-33C and 40C are designed for both slab-
type and rough terrain construction applications. Lifting
and driving these models MUST be on a flat, level,
compacted surface.
WARNINGS
The operator MUST read and completely understand
the front panel labels (Figures 1-1) and ALL other
warnings in this manual and on the work platform.
Compare the labels on the work platform with the labels
found throughout Sections 1 and 2 of this manual. If
any labels are damaged or missing, replace them
immediately.
DESCRIPTION
The work platform consists of four major assemblies,
the platform, boom assembly, turret and drive chassis.
An operator's control console is located on the platform.
A foot switch on the platform enables and disables the
platform controls. Auxiliary and emergency controls are
located in the hydraulic/electric cabinet on the rotating
turret.
PLATFORM - The platform is constructed of a skid-
resistant see-thru deck surface and a 42" high tubular
steel railing system with midrails and 6" toe boards. The
platform can be entered through a sliding midrail bar at
the center of the railing system or optional hinged gate.
The platform can be rotated 90 degrees from center in
either direction. A 110 VAC GFI outlet is also located on
the platform.
SJKB Battery Powered
SJKB Battery Powered
SECTION 1
INTRODUCTION
BOOM ASSEMBLY - The boom is mounted on the turret
and consists of a 4 foot hydraulic boom jib, telescoping
boom assembly and riser arm. This mechanism uses
double-acting hydraulic cylinders with holding valves to
control vertical movement. Manual lowering valves at
the base of the riser, boom and jib cylinders allow the
mechanism to lower in the event of an emergency or
electrical system failure.
TURRET - SJKB-33N, the turret rotates 355 degrees
noncontinuous. Within the turret are two cabinets. One
cabinet contains the hydraulic tank and boom function
pump/motor assembly. The other cabinet contains
hydraulic and electric components and the base control
panel. SJKB-33i, 33C, 40i, 40C, The turret rotates 365
degrees noncontinuous. Within the turret are two
cabinets. One cabinet contains the main hydraulic
manifold. The other cabinet contains the boom function
pump/motor assembly, the brake manifold with
emergency release valve, and the base control panel.
The 48 volt, 25 amp battery charger is located at the
rear of the turret. A hinged panel above the battery
charger houses the electronic control units. The
hydraulic oil tank is located at the front of the turret.
DRIVE CHASSIS - This weldment supports two battery
compartments each holding four six volt, deep-cycle
batteries. An electric motor coupled with a drive locking
differential is used for driving the work platform. Dynamic
braking as well as spring-applied hydraulically-released
parking brakes are located on the drive axle. The front
axle has two non-driven wheels steerable by double-
acting steer cylinders. SJKB-33N, the 48 volt, 25 amp
battery charger is located at the front of the chassis.
PLATFORM CONTROL CONSOLE - Located on the
platform, this removable control station contains controls
for work platform motion and emergency stopping.
OPTIONAL ACCESSORIES - The SKYJACK SJKB
Boom Work Platform is designed to accept a variety of
optional accessories. These are listed in Table 1-1.
Specifications and Features found later in this section.
Operating instructions for these options (if required) can
be found in Section 2 of this manual.
SECTION 1, Page 1
1
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