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W450769A 01/14
2.3 Preliminary Checks and Measurements
Record the following measurements and check for accuracy. If measurements exist in the system from
a previous application, or if no measurements exist, enter the new measurements into the system.
Validate any data supplied by the crane manufacturer before calibration begins. Enter all dimensions
into the computer in feet and tenths of a foot.
2.3.1 Boom Pivot Dimensions
Place the boom at (0°) when taking the following measurements.
USE THE SPACE PROVIDED IN APPENDIX A TO RECORD THE MEASUREMENTS.
Dimension “L” -
The horizontal distance between the center of the boom pivot and the center of the
boom hoist cylinder upper pivot.
Dimension “J” -
The vertical distance between the center of the boom pivot and the center of the
boom hoist cylinder upper pivot.
NOTE: If the boom pivot is above the boom hoist cylinder upper pivot the dimension is negative (-).
Dimension “G” -
The horizontal distance between the center of the boom pivot and the center of the
boom hoist cylinder lower pivot.
Dimension “H” -
The vertical distance between the center of the boom pivot and the center of the
boom hoist cylinder lower pivot.
G
L
Main Boom
J
H
Boom Pivot
Boom Hoist Cylinder
Upper Pivot
Boom Hoist Cylinder
Boom Hoist Cylinder
Lower Pivot
