Hardi Ranger Series Instruction Book

Contents

6 - Maintenance6.12WARNING! The rear cable can snap and injure you or some-one else if tensioned when the boom is unfolded. Alwaysadjust the front cable first - with the boom unfolded and therear 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 sectionuntil 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 verymuch on the front fold cable adjustment. A correctly adjusted cablewill also control the movement of the outer section.Adjusting the front fold cableIf 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 wastightened, the wing assembly will move a bit forward. If frontcable was loosened, the wing assembly will move a bit rear-ward. Therefore, adjust fold cylinder, if necessary, as describedin the section ‘Alignment of center section and inner wingsections’.The function of the breakaway section is to prevent or reduce boomdamage, should it strike an object or the ground.Check that the lower nut (A) is fully tightened. The breakawayshould release with a force of 18 lbs (80 N) at the extremity. Pleasenote that the clutch must be well greased before adjustment iscommenced.To adjust, loosen jam nut (B). Tighten nut (C) to stiffen clutch action.Tighten jam nut (B) after adjustment.Breakaway section adjustmentATTENTION! 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 8hours to ensure maximum performance and life.