BRAKE CYLINDER PART NO. 73377
Part No. 73377
Standard NABRICO winches are equipped with one control station which is mounted on the winch. The start button starts the electric motor and the stop button stops the motor. The spring centered rotary switch above the push buttons activates the solenoid controlled hydraulic valve which allows the cable to be hoisted in or payed out.
To hoist in cable, push the start button; rotate the tope switch to the “in” position and hold until the desired tension is reached. To pay out cable, rotate the top switch to “out” and hold until the desired amount of cable has been unreeled. An optional remote control station can also be provided with the same controls as those mounted on the winch. When the remote station is provided, an optional remote-local switch can be added to the winch control station so that only one station at a time controls the winch.
HYDRAULIC RELIEF VALVE ADJUSTMENT
The hydraulic relief valve is factory set at 1800 psig for 20, 40 and 60 ton holding capacity winches and 1500 psig for 10 ton holding capacity winches. If adjustment is required, disconnect the brake line from the hydraulic brake cylinder (Part Number 73377) and install a pressure gauge in the brake line. Remove the threaded cap and back off the lock nut on the relief valve to increase pressure. Screw out the threaded stem to decrease pressure. Increase setting on the relief valve until the valve begins to relieve at 1800 psig or 1500 psig as required. Tighten lock nut and screw on the threaded cap.