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M434/500 Prototype Commissioning Manual
PN W453101Rev- Nov-02-1998
Boom Hoist Geometry
Measure each dimension shown using a tape. It is at best, a difficult exercise to measure these
dimensions, but still a necessary check. It is recommended that two people carry out this task and that
care is taken to ensure that clear references are used to measure from.
Dimension “L”
is the distance parallel to the boom center line between the center of the Boom pivot and
the center of the upper Boom Hoist cylinder pivot.
Dimension “J”
is the distance at 90 degrees to the boom center line between the center of the Boom
pivot and the center of the upper Boom Hoist cylinder pivot.
J is negative when the Boom pivot is above the upper Boom Hoist cylinder pivot and positive when it is
below
.
Dimension “G”
is the horizontal distance between the center of the Boom Pivot and the center of the
lower Boom Hoist cylinder pivot.
Dimension “H”
is the vertical distance between the center of the Boom pivot and the center of the lower
Boom Hoist pivot.
It is recommended that the boom is level when measuring dimensions “L” and “J”.
The carrier is assumed to be level for the purposes of measuring dimensions “G” and “H”.
Enter the measured values into each of the gray boxes provided below.
*
If the boom foot pin is above the Boom Hoist cylinder Upper Pivot (as shown), dimension “J” is
negative.
Clearly indicate “+” or “-“.
The above illustration shows dimension “J” as negative.
H
J
G
Boom Hoist Cylinder
Boom
Boom Pivot
Low er Pivot
Upper Pivot
L
*
