19
HARDI
®
FORCE™ BOOM OPERATOR’S MANUAL
7.2 Boom Adjustments and Alignments
A. Adjustment of Center Section
Suspension spring tension
1. With the boom unfolded (in spraying position), the trapeze
suspension arms should be level/horizontal (Fig. 9). To adjust,
loosen the 3 jam nuts (
A
)(Fig. 9) on both sides and adjust the
tension of the vertical springs by tightening or loosening the bolts
(
B
)(Fig. 9) to suit the boom weight.
Note: Adjust all 3 bolts (B)(Fig. 9) evenly on each spring. Also
make sure both springs are adjusted equally.
2. Tighten the jam nuts (
A
)(Fig. 9) when correctly adjusted.
Link Arms Length Adjustment
1. The link arm length should not normally need adjustment. If the
suspension has been dismantled, the length must be checked or
adjusted if necessary.
2. Loosen the jam nuts (
C
)(Fig. 10) on both sides of the link arms.
3. Adjust the length of all 4 of the arms (Fig. 10, Fig. 11) to initially
measure 19-5/16" (490mm) from center of eyebolt to center of
eyebolt.
Fig. 9
Trapeze suspension
arm pivot points
Horizontal line
B
A
B
A
19-5/16" (490mm)
LINK ARM
C
Fig. 10
Summary of Contents for FORCE
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