Great Plains 3P-FF900 Operator Manual - Manual (Page 27)

12/8/2009 500-643M
25 Operating Instructions
Locking System
Refer to Figure 6
The 3P-FF600, 3P-FF800 and 3P-FF900 have a
locking system for automatic boom locking during
folding and transport. For proper folding, the
boom-lock cable must be tight enough that the
lock arms just clear their stops when unfolded and
rest secure against the stop when folded.
Figure 6
Locking System
21760
Lock Arms
Refer to Figure 7
To adjust the tension on the boom-lock cable,
loosen jam nut and turn clevis.
Figure 7
Boom-Lock Cable
21761
Break Away Spring
Refer to Figure 8
Periodically check that break-away springs are
compressed to 5 1/2 inches. Adjust spring by turn-
ing mounting nut under spring.
17001
Figure 8
Break-Away Spring