JLG 26MRT ANSI Operator Manual - Manual (Page 29)

SECTION 4 - MACHINE OPERATION
3120790 – JLG Sizzor – 4-1
SECTION 4. MACHINE OPERATION
4.1 DESCRIPTION
This machine is a self-propelled aerial work platform on
top of an elevating ‘scissor’ mechanism. The Scissor Lift’s
intended purpose is to position personnel with their tools
and supplies at positions above ground level. The
machine can be used to reach work areas located above
machinery or equipment positioned at ground level.
The JLG Scissor Lift has a primary operator Control Sta-
tion in the platform. From this Control Station, the operator
can drive and steer the machine in both forward and
reverse directions, raise and lower the platform and, if
equipped, operate the powered deck extension. The
machine has a Ground Control Station which will override
the Platform Control Station. Ground Controls operate lift
up and down. Ground Controls are to be used only in an
emergency to lower the platform to the ground should the
operator in the platform be unable to do so.
Instructions and hazard warnings are posted adjacent to
both operator control stations and at other places on the
machine. It is extremely important that operators know
what instructions and warnings are placed on the
machine, and review these periodically so that they are
fresh in their minds. Vibrations emitted by these machines
are not hazardous to an operator in the work platform.
The JLG Scissor Lift is designed to provide efficient and
safe operation when maintained and operated in accor-
dance with warnings on the machine, the Operating and
Safety Manual, the Service and Maintenance Manual and
all jobsite and government rules and regulations. As with
any type of machinery, the operator is very important to
efficient and safe operation. It is absolutely necessary that
the JLG Lift be regularly maintained in accordance with
this manual and the machine Service and Maintenance
Manual, and that any evidence of lack of maintenance,
malfunction, excessive wear, damage or modification to
the machine be reported immediately to the machine
owner or the jobsite supervisor or safety manager and that
the machine be taken out of service until all discrepancies
are corrected.
The JLG Scissor Lift is not intended to be used to lift mate-
rial other than supplies which personnel in the platform
require to do their job. Supplies or tools which extend out-
side the platform are prohibited. It must not be used as a
forklift, crane, support for overhead structure, or to push
or pull another object.
The JLG Scissor Lift is powered using hydraulic motors
and cylinders for the various machine motions. The
hydraulic components are controlled by electrically acti-
vated hydraulic valves using switches and control levers.
The speeds of functions controlled by control levers are
variable from zero to maximum speed, depending upon
the position of the control lever. Functions controlled by
toggle or push-button switches are either on or off. In
some instances, a function switch can be used in conjunc-
tion with the controller to give the machine a higher func-
tion speed range.
The JLG Scissor Lift is a two wheel drive machine with
drive power being supplied to the rear wheels by a pump-
driven drive axle. The rear wheels are supplied with a
hydraulic disc brake. This brake is automatically applied
any time the Drive controller is returned to the neutral
position.
The platform capacity of the scissor lift is 1,000 lb. (454
kg). The weight in the platform should be uniformly distrib-
uted in the center of the platform. The total combined
weight of personnel, tools and supplies must not exceed
the above figures.
The platform may be raised only when positioned on firm,
level and uniform surfaces.
4.2 GENERAL
This section provides the necessary information needed
to operate the machine. Included in this section are the
procedures for starting, stopping, traveling, steering, park-
ing, platform loading and transporting the machine. It is
important that the user read and understand the proper
procedures before operating the machine.
4.3 ENGINE OPERATION
Power Selector Switch
The power selector switch functions to direct electrical
power to the desired control station. With the switch in the
ground position, power is supplied to the emergency stop
switch at the ground control station. When the switch is in
the platform position, power is supplied to the emergency
stop switch at the platform control station. The switch
should be in the off position when parking the machine
overnight.
Emergency Stop Switch
This switch, when in the on (out) position, provides electri-
cal power to the ground controls or platform controls, as
applicable. In addition, the switch can be used to turn off
power (push the switch IN) to the function controls in the
event of an emergency.
Updated 4/19/00