LIFT PROCEDURE In making lifts, the operator must
successfully coordinate several crane functions.
These include the boom raise/lower, boom extend/re-
tract, 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 opera-
tions.
OUTRIGGERS Set the outriggers as follows before
initiating any lifting operations:
1. Remove the outrigger beam retaining pins.
2. To set the four(4) outriggers evenly, operate switch-
es to raise crane to a level position. When level, re-
tract 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 op-
posite end of crane. This equalizes pressure in all
four jacks. The controls for the out and down outrig-
gers are mounted on the dash. The extend/retract
master switch must be actuated before the appro-
priate function switches can be actuated to operate
the outriggers.
This is a safety feature to prevent accidental actuation
of the outriggers while the crane is in motion because
the STEERING IS NON-FUNCTIONAL WHILE THE
OUTRIGGERS ARE BEING OPERATED.
The outrigger beams MUST BE FULLY EXTENDED,
and the crane leveled prior to extending the boom or
lifting loads. To achieve this condition, the vertical jack
cylinders should be extended only enough to lift the
wheels off the ground.
FULL extension of the vertical jack cylinders should be
avoided if not necessary to level crane and raise
wheels clear of ground because oil expansion under
extreme heat conditions can cause cylinder seal fail-
ure. 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 us-
ing the bubble indicator to determine when a level con-
dition is achieved. While operating the crane,
frequently check and level the outriggers between lifts.
The operator must exercise sound judgment in posi-
tioning 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 firms footing or level
ground is not otherwise available, it should be provided
by substantial timbers, solid blocking, or other structur-
al members sufficient to distribute the load so as not to
exceed the safe bearing capacity of the underlying ma-
terial, and to enable leveling of the crane.
Proper positioning of the outriggers is critically impor-
tant to both the safety and effectiveness of craning op-
erations.
Before making any crane lift, make sure the hook is
properly engaged with the slings, or lifting device em-
ployed to make the lift. Be certain the hook latch is not
supporting any of the load. Refer to the warning tag on
the hook block.
OPERATING PROCEDURES
MAKING A TYPICAL LIFT
Revised: October 20053 - 6RT700
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