500E2 OPERATOR MANUAL SET-UP
National Crane Published 07-26-2019 Control # 111-06 4-3
level indicator to insure that the crane is properly leveled.
Always keep the load as close to the ground as possible.
Lifting Over the Front with a Single Front
Outrigger (SFO)
A single front outrigger (SFO) is required when loads are to
be lifted over the front of the vehicle. Before conducting any
boom operations, extend both outriggers until the chassis
weight is removed from the wheels. Level the crane side-to-
side using the level indicator located at either control station
as a reference. Then extend and lower the rear stabilizers to
level the crane front-to-back. Again refer to the level indicator
to insure that the crane is properly leveled. After the crane is
leveled side-to-side and front-to-back, extend the SFO leg(s)
until firm contact is made with the ground. Always keep the
load as close to the ground as possible.
Check to ensure that the jib, if so equipped, is stowed
correctly on the first section boom.
Before Making the Lift
1. Check all controls for proper operation by operating
each system through one complete cycle. This is
particularly important after the unit has been serviced or
repaired. If any abnormal operations are detected,
correct the condition before continuing.
2. During all operations, the controls should be metered
when beginning or terminating a movement to prevent
sudden starting or stopping which imposes undue shock
loads on the equipment. This metering can be
performed by metering the control lever and the foot
throttle.
READING AND UNDERSTANDING THE
LOAD CHARTS
The structures and components of your unit are designed to
provide satisfactory service if the unit is not loaded in excess
of the maximum rated loads specified on the load chart.
Overloading can create serious potential safety hazards and
can also shorten the service life of your unit. It is important
that you know the weight and radius of any load that you are
attempting to handle. This should be done by use of a
dynamometer and tape measure or by contacting your
supervisor.
DANGER
Do not operate outriggers unless they are visible to either
the operator or a designated signal person to avoid
crushing injury
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