Hardi Ranger Series, Instruction Book

Page: 64 / 88

6 - Ma int e n a nc e
6.12
WARNING! The rear cable can snap and injure you or some-
one 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 10 lb (4.5 kg) weight (C) from the straight edge-to-
cable contact point (B) and check deflection by measuring the dis-
tance from the straightedge to the cable (D). Cable should deflect
.25 - .50 in. (13-22 mm).
The performance of the SPB 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.
A dj ustin g t he f ront f o ld c a b le
If adjustment is needed:
5. Loosen jam nuts (E) on the turnbuckle assembly and adjust turn-
buckle (F) for proper cable deflection.
6. Tighten jam nuts (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 rear-
ward. Therefore, adjust fold cylinder, if necessary, as described
in the section ‘Alignment of center section and inner wing
sections’.
The function of the breakaway section is to prevent or reduce boom
damage, should it strike an object or the ground.
Check that the lower nut (A) is fully tightened. The breakaway
should release with a force of 18 lbs (80 N) at the extremity. Please
note that the clutch must be well greased before adjustment is
commenced.
To adjust, loosen jam nut (B). Tighten nut (C) to stiffen clutch action.
Tighten jam nut (B) after adjustment.
Br ea k away s e ction adj ust me nt
ATTENTION! Properly lubricate clutch assembly before adjust-
ing the tension. Bolts (D) must be torqued to 40 Ft/lb (55 Nm)
every 40 hours to prevent boom damage. Lubricate every 8
hours to ensure maximum performance and life.