Introduction & Specifications; Introduction; Purpose; Scope - Snorkel A38E Service Manual

1.0 Introduction

PURPOSE

The purpose of this Service & Parts Manual is to
provide instructions and illustrations for the operation
and maintenance of the A38E Work Platform
manufactured by Snorkel. (See Figure 1-1).

SCOPE

The manual includes the procedures and
responsibilities which must be strictly adhered to for
proper operation, maintenance, adjustment, and
repair of this product. The Maintenance Section
further covers preventative maintenance and trouble
shooting.

1.1 General Information

The A38E is a quickly deployable self propelled aerial
work platform, designed to raise a specified number
of operators with hand tools to a work height of up
to 13.45 m (44.12ft.) i.e. a platform floor height of
11.45 m (37.56 ft.). It is designed to provide mobility
with the Platform in the raised or lowered position,
although travel with the Platform raised is limited to
a low speed. The boom assembly and telescope
functions are operated by a hydraulic pump driven
by a DC electric motor. Two DC electric traction
motors coupled to two braked gearboxes regulate
the drive function.

PLATFORM

The platform is large enough for a specified number
of operators and has a free-draining perforated floor
with 150 mm (5.9inches) toe boards. Hand rails are
constructed from steel tubing and a safety drop-bar is
provided at the entrance. Safety harness anchor points
are also fitted in the floor of the platform. The primary
Control Box is fitted permanently within this platform.
W A R N I N G
DO NOT begin using the machine until the
platform entrance drop bar is in the fully
lowered position.
A38E Work Platform
Introduction & Specifications

CONTROL BOX

The control box is permanently fitted at the front
centre of the platform. It features a Joystick which
will provide proportional control for raising or
lowering either of the two booms, extending or
retracting the Telescopic Boom, rotating (slewing)
the entire Booms & Posts Assembly or driving.
A safety feature which is incorporated into the
Joystick's operation is the Interlock Switch. This
must be activated at all times while operation is
required. This allows for one-handed operation. A
complete explanation of control functions can be
found in Section 3.

ELEVATING ASSEMBLY

The platform is raised and lowered by a combination
of two steel lift booms and one telescopic boom,
each of which is operated by a hydraulic cylinder
which in turn is actuated by hydraulic power from the
motor driven pump. Solenoid operated valves control
to which cylinder the hydraulic oil is directed. Each
cylinder features an integral holding valve to prevent
uncontrolled descent in the case of a hose burst.

ROTATION GEAR

The Booms & Posts Assembly can be rotated to
provide up to 5.6 m (18.4 ft.) of side outreach,
measured from the centreline of rotation to the front
of the Platform. This is done by means of an integral
hydraulic motor driving a Worm Drive Unit, around a
large diameter Slew Gear.
1.
7.
1. Platform
2. Elevating Assembly
3. Chassis
4. Power Module
5. Control Module
6. Platform Control Box
7. Lower Control Box
Figure 1-1: A38E Work Platform
Section
1.0
6.
2.
5.
4. 3.
1-1