| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-221-14-2
5-7. HYDRAULIC STEERING SYSTEM.
GENERAL
a.
See figures 5-5 for diagram of steering system.
b. The hydraulic steering systems use medium pressure hydraulic fluid to actuate cylinders which position the
rudders. Fluid is supplied by the hydraulic pumps to the helm unit which is the principal metering and directional
controlling device. By directing hydraulic fluid to one side or the other of the cylinders, they will extend or retract, giving
the desired position to the rudders.
c
The helm unit and other valves control the direction and volume of flow of hydraulic fluid. The relief valve
protects the system by limiting hydraulic fluid pressure. The flow control valve (flow divider) limits the volume of fluid to
the valve at which this system is designed to work. The flow control valve (flow divider) divides the fluid supplied into
two flows (2. 5 gpm) to the helm unit, and the remainder returned to the storage tank.
NOTE
The steering system is designed to be supplied by one
pump. Using both pumps will only cause a doubled
bypass flow resulting in excessive heating of fluid. The
steering system pump discharge valves should be set
with one valve open and one valve closed.
5-115
|
||
|
||
