Section 3 - Operation Major Assemblies
3.3 Major Assemblies
The aerial platform consists of three major assemblies:
base, lifting mechanism and platform.
3.3-1 Base
The base is a rigid, one-piece weldment which
contains hydraulic, electrical components and
four (4) 6 volt batteries. The front wheels are driven
by hydraulic motors, steerable by a hydraulic
cylinder. The rear wheels are non-driven, with
spring-applied hydraulically released brakes.
3.3-2 Lifting Mechanism
The lifting mechanism is constructed of formed
steel. The Mast assembly is raised and lowered by
a series of chains and a single-acting hydraulic lift
cylinder with holding valves. A pump, driven by an
electric motor, provides hydraulic power to the lift
cylinders.
3.3-3 Platform
The platform is constructed of a tubular support
frame, a skid-resistant “diamond plate” deck
surface and 43.25” fixed guardrails with 6” toe
boards and mid-rails. The platform can be entered
from the front through a spring-returned gate with
latch (if equipped).
3.4 Serial Number Nameplate
The serial number nameplate, located at the rear of the
aerial platform, lists the following:
• Model number
• Serial number
• Aerial platform weight
• Maximum drivable height
• Maximum capacities
• Maximum number of persons permissible on the
platform
• Voltage
• System pressure
• Lift pressure
• Maximum platform height
• Maximum wheel load
• Date manufactured
Vertical Mast
Page 35
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