Hardi RANGER EAGLE, Original Instruction Book

Page: 78 / 100

6 - Maintenance
78
Adjusting the front fold cable
The performance of the SPB/SPC boom while spraying depends very
much on the front fold cable adjustment. A correctly adjusted cable will
also control the movement of the outer section.
±
WARNING! The rear cable can snap and injure you or someone
else if tensioned when the boom is unfolded. Always adjust the
front cable first - with the boom unfolded and the rear cable last
- with the boom folded in transport position.
1.
Unfold the boom.
2.
Check security of turnbuckle anchors to its hinges.
3.
Slide a straight edge (A) down the underside of the inner section
until it contacts the front cable = contact point (B).
4.
Suspend a weight of 4.5 kg (C) from the straight edge-to-cable
contact point (B) and check deflection by measuring the distance
from the straight edge to the cable. Cable should deflect 13-22
mm (D).
If adjustment is necessary:
5.
Loosen counternuts (E) on the turnbuckle assembly and adjust
turnbuckle (F) for proper cable deflection.
6.
Tighten counternuts (E) again and remove weight.
±
WARNING! Check boom alignment again. If front cable was
tightened, the wing assembly will move a bit forward. If front
cable was loosened, the wing assembly will move a bit rearward.
Therefore, adjust fold cylinder, if necessary, as described in the
section ‘Alignment of centre section and inner wing sections’.
Adjusting rear cable
1.
Raise boom to its highest position. Fold it to transport position
with tilt cylinders fully extended. Make sure that fold cylinders are
pressurized and that the boom is folded all the way in.
2.
Ensure the boom transport brackets are in contact with the outer
wing. Adjust if necessary.
3.
Loosen the counternuts (E) on the ends of turnbuckle (F). Adjust
the turnbuckle (F) so that the outer section contacts the boom
transport bracket.
4.
Secure counternuts (E) again.
±
WARNING! The rear cable can snap and injure you or someone else if tensioned when the boom is unfolded. Always
adjust the front cable first - with the boom unfolded and the rear cable last - with the boom folded in transport
position.
Boom size Tightening
18-21 m Turn the turnbuckle another 4 complete turns.
24-28 m Turn the turnbuckle another 3 complete turns.