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Integral Backstay Adjuster Installation and User Manual Please read these instructions carefully before using or servicing the equipment. This manual may be modified without notice. See: www.harken.com/manuals for updated versions. PLEASE SAVE THESE INSTRUCTIONS...
Features This user manual contains important information for the correct Built-in,single-acting pump. use of the Harken integral hydraulic backstay adjuster. Read all instructions carefully before use. If you do not understand these Two handle attachment options: instructions, contact Harken. Do not use the integral backstay...
1. Carefully unpack the adjuster and check for visible defects. If any signs of damage are present, contact your dealer at point of purchase or Harken. Turn release knob 2. Extend adjuster to prepare for installation and to measure counterclockwise backstay length.
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• Attach toggle to chainplate. Bleed Pump • Open the release valve and extend the adjuster. Harken integral backstay adjusters are cycled and tested at factory, • Attach upper clevis to backstay. however, oil can become displaced inside adjuster during shipment or storage.
Operation Follow these simple steps for adjuster operation. Increase tension 1. Turn pressure release knob clockwise to close. Close to hand tight only. It is impossible to damage the valve by hand. IMPORTANT! Using vise grips or pliers to apply excessive force can cause damage. The resting position for the pressure release knob is closed.
Operation Relief valve settings FACTORY-SET MAXIMUM PULL FORCE BY ADJUSTER Maximum Pull Force The adjuster relief valve is preset at our factory to limit the tension Type Adjuster Part No. to the maximum load of the recommended cable of the rigging for 3770 1710 which it is used.
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Cylinder care and maintenance The Harken integral backstay adjuster should give years of reliable service. If it is properly bled, and clean environment is maintained, no regular maintenance is required. Seals should be changed every ten years (dependent on use) unless adjuster eases without pressure relief valve releasing the pressure first. If you experience any problems with your Harken integral backstay adjuster, contact your Harken service representative.
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