After the crane has been readied for service, an operational check of all
crane functions (with no load applied) should be performed. Accomplish the
Preload Check as follows.
OPERATE THE ENGINE AT OR NEAR THE
GOVERNED RPM DURING PERFORM-
ANCE OF ALL CRANE FUNCTIONS.
Carefully read and become familiar with all
c r a n e operating instructions before
attempting a preload check and operating
the crane under load.
Remove turntable lock pin.
Ensure that lock pin for antitwo-block switch is removed.
Extend and set the outriggers.
Raise, lower, and swing the boom right and left a minimum of 45
Telescope the boom in and out,
Raise and lower the cable a few times at various boom lengths. Ensure
there is no kinking.
USING YOUR CRANE CAPACITY CHARTS.
One of the most important tools of every
Grove crane is the Rated Lifting Capacity
Chart found in the crane operator's cab.
The Rated Lifting Capacity Chart (figure 4-5) contains a large amount of
information, which must be thoroughly understood by the operator. Refer to
figure 4-6 for terms
to know concerning the chart.