Brake

The brake mechanism consists of four hydraulic cylinders that attach to crank arms on the Seakeeper gimbal shafts. The Seakeeper controller modulates how fast the oil can flow through the control valve thus controlling the precession rate of the Seakeeper.

The brake hydraulic circuit is a pre-charged closed loop – that is, there is no pump, motor or reservoir in the circuit. Accumulators are installed in the circuit so the pre-charge pressure does not increase as the fluid temperature rises due to the braking action. Locking solenoid valves are installed in the circuit to lock the Seakeeper, so it cannot precess if there are any alarms or a mechanical problem.

Hydraulic Hand Pump Kit, P/N 10384, is required for servicing the brake system. Pressure should never be relieved unless this tool is available.