Unit 4.54905 - Harken

More documents

Recommendations

Info

ADJUSTMENTS Halyard Wraps ■ HALYARD WRAPS The most serious problem with furling systems occurs when the jib halyard wraps around the headstay foil. Halyard wraps will prevent furling or unfurling and may cause serious damage to the unit and the halyard. In severe cases, halyard wraps may cause loss of the headstay. To prevent wraps, the halyard must exert a slight pull to the rear. This allows the foils to turn while the halyard remains stationary. ■ PREVENT WRAPS WARNING: The sail must be fitted to the foils before operation. 1 Halyard swivel should be within the top 6” (150 mm) of the foil. 2 Halyard must pull slightly to the rear (8 - 10°). 3 Halyard must be snug, but not too tight. TIP: With the sail raised, walk away from the boat and look at the masthead with binoculars. Use the halyard swivel as a measurement reference. 6” (150 mm) is 1 /3 the length of the swivel. There should be less foil exposed above the swivel than 1 /3 of the swivel. 8 - 10° If a halyard wraps, do not force the unit to turn. Attempt to open the sail by alternately furling in and out slightly. If the sail can be unfurled, lower the sail by releasing the jib halyard. Severe halyard wraps can only be cleared by going aloft and freeing the halyard. If the sail will not furl or unfurl, it may be possible to remove the jib sheets and manually wrap the sail around the headstay. Remember: Testing at the dock does not indicate the halyard angle is correct. In wave action, the foils may wrap if the lead angle is not correct. The diverging 8-10°angle mentioned above is critical. 20 Hydraulic Furling 4.5 April 2000
ADJUSTMENTS Pendants ■ PENDANTS If your sail is not long enough to position the halyard swivel properly, you must add a pendant to the sail. Pendants should be plastic coated wire permanently attached to the sail so the height will be correct. Adjustable length pendants are not acceptable as they might not be adjusted correctly during a sail change. ■ INSTALL A PENDANT 1 Raise the sail, but do not attach tack shackle. 2 Position the halyard swivel correctly near the top of the headstay and secure the halyard. 3 Secure a piece of rope to the sail tack. Lead the line through the tack shackle on the furling drum and tension the sail. 4 Measure the distance from the tack shackle to the sail tack and have a pendant of this length permanently attached to the head of the sail. 5 Repeat this procedure for every jib. TIP: Pendants are used at the head of the sail. Short pendants may be added at the tack to improve visibility under the genoa, but remember that visibility is already improved by shackling to the tack swivel. Tack pendants increase heeling moment by raising the sail plan. You may install pendants at both the head and tack of the sail. April 2000 Hydraulic Furling 4.5 21
Page 1 and 2: Hydraulic Furling Installation Manu
Page 3 and 4: GENERAL SPECIFICATIONS Unit 4.5 ■
Page 5 and 6: GENERAL SPECIFICATIONS Parts List
Page 7 and 8: PREPARATION Headstay Length ■ HEA
Page 9 and 10: PREPARATION Cutting Top Foil ■ NO
Page 11 and 12: ASSEMBLY Foils Coat three foil scre
Page 13 and 14: ASSEMBLY Attach Stay - Wire ■ ATT
Page 15 and 16: ASSEMBLY Torque Tube ■ INSTALL TO
Page 17 and 18: ASSEMBLY Raise Furling • Gearbox
Page 19: ADJUSTMENTS Headstay Tension ■ AD
Page 23 and 24: ADJUSTMENTS Before Operation • Ma

Unit 4.54905 - Harken

Create successful ePaper yourself

Delete template?

Save as template?