Adjacent to the power unit is a hydraulic fluid control valve panel. An emergency air-hydraulic pump is also provided with the system.
Fluid pressure is transmitted to either the undogging or dogging side of the hydraulic cylinders.
You, as the maintenanceman, must also be familiar with the proper operation of the boat davit. Some common problems with the boat davit are rusting of parts, loss of lubrication, contaminated oil in the gearcase, and faulty centrifugal brakes. Because of the location of the boat davit on the weather deck, the machinery is highly exposed to sea spray, even though it is covered by protective covering. You must lubricate the boat davit and winch after adverse weather conditions. For maintenance and repair of the boat davit, follow the PMS assigned for this machinery.