LOAD KING 80-160, Operator'S Manual

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180
80-160
Operating Instructions
Making a Typical Lift
LIFT PROCEDURE In making lifts, the operator must successfully coordinate several crane functions.
These include the boom raise/lower, boom extend/retract, load hoist/lower and swing functions.
Although experienced operators tend to operate two or more of these functions simultaneously, the lift
procedure can be broken down into the following sequence of operations.
OUTRIGGERS Set the outriggers as follows before initiating any lifting operations:
1. Remove the outrigger beam retaining pins, extend beams, and reinstall retaining pins.
2. To set the four (4) outriggers evenly, operate switches to raise crane to a level position. When level,
retract jacks (together) at one end of crane an inch or so, and then extend them again (together)
until crane is level. Then repeat this process for the opposite end of crane. This equalizes pressure
in all four jacks. The controls for the out and down outriggers are mounted on the dash. The extend/
retract master switch must be actuated before the appropriate function switches can be actuated
to operate the outriggers.
The outrigger beams MUST BE PROPERLY POSITIONED FOR THE LOAD RATING CHART BEING
USED, and the crane leveled prior to extending the boom or lifting loads. To achieve this condition,
the vertical jack cylinders should be extended until the tires are raised free of the supporting
surface.
FULL extension of the vertical jack cylinders should be avoided if not necessary to level
the crane and raise wheels clear of the ground because oil expansion under extreme
heat conditions can cause cylinder seal failure. Check to ensure that all beams are fully
extended, swinging the upper if necessary to visually check that each beam reaches
full extension. Level the crane by viewing the IC-1 screen which will show the crane on
the X-axis and Y-axis relative to 0.0 degrees. While operating the crane, frequently
check and level the outriggers between lifts.
The operator must exercise sound judgment in positioning the outriggers. The
outriggers should not be set near holes, on rocky ground or on extremely soft ground.
Setting the outriggers in such locations may result in the crane tipping, causing
personal injury or property damage. Where a firm footing or level ground is not
otherwise available, it should be provided by substantial timbers, solid blocking, or
other structural members sufficient to distribute the load so as not to exceed the safe
bearing capacity of the underlying material, and to enable leveling of the crane.
Proper positioning of the outriggers is critically important to both the safety and effectiveness of
craning operations.