Harken’s integral hydraulic backstay adjuster provides the power
to optimize sail shape quickly. The cylinder features a built-in, double-acting
pump that delivers oil when the handle is both pushed and pulled. This
moves oil through the system twice as fast as single-acting pumps on other
Assemblies include a hardcoat-anodized aluminum cylinder and pump, valve,
gauge, and stainless pump handle with three attachment options: pin installs
handle permanently; O-ring secures handle in socket, but is not permanent;
nonlocking handle installs without O-ring and roll pin. All pins and
plugs are stainless steel. Cylinders include a clevis on both ends. Standard
eye-jaw toggles fit all Harken® cylinders.
The pressure release knob turns clockwise to close and pump, counterclockwise
to release. When closing the pump, the knob cannot be over-tightened
by hand, preventing damage to the valve. Release speed depends on how
far open the knob is turned. Pressure relief is factory set to prevent
crew from over-tensioning the backstay.
An analog gauge with pressure increments reading 0-5 (0-5000 psi) is
prominently mounted at the top of the cylinder. The gauge adjusts to
four positions for easy viewing from the cockpit.
Part Number: HCI040160385BCC