Jefa H300 hydraulic steering pedestals |
Jefa 300 series steering pedestal concept |
Jefa H300 hydraulic steering pedestals |
The H300 is the hydraulic steering version of the 300 series pedestal. The helm pump in the top of the pedestal is produced by one of the largest hydraulic steering companies in the world: Lecomble & Schmitt (www.ls-france.com). Both hydraulic steering connections and the hydraulic reservoir connection on the pump are extended to a valve block at the bottom of the pedestal. The two outer connections are connected to the hydraulic cylinder and the middle connection can be connected to the reservoir entrance of a hydraulic autopilot drive or an inside steering helm pump. All three connections are 3/8" BSP. There is no non-return valve present in the pump, so when multiple pumps or an autopilot drive is use, a separate in-line non return valve should be used. The displayed engine control is optional. |
Jefa H300 hydraulic steering pedestal dimensions |
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Hydraulic lock valve |
The hydraulic pump in the pedestal is not equipped with a
lock valve (non-return valve). The consequence is that the rudder
pressure can be felt on the steering wheel, and when the helmsman
loosens the wheel, the wheel will rotate back to the mid position. When
this feature isn't appreciated, one should us a lock valve to prevent
oil to flow back to the pump.
When the hydraulic system is equipped with a second pump (for inside steering) or a hydraulic autopilot drive one should always us a lock valve between the pedestal and the rest of the hydraulic system. This will force the oil to the cylinder and prevent it to take the easy route to the pump and cause the wheel to rotate. |
Jefa H300 hydraulic steering pedestals and accessories |
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Part No. | Description | |
H300-71-36 | Pedestal H300, 36cc pump, height 710mm | |
H300-71-60 | Pedestal H300, 60cc pump, height 710mm | |
H300-71-90 | Pedestal H300, 90cc pump, height 710mm | |
H300-80-36 | Pedestal H300, 36cc pump, height 800mm | |
H300-80-60 | Pedestal H300, 60cc pump, height 800mm | |
H300-80-90 | Pedestal H300, 90cc pump, height 800mm |
Selection of a system |
Boat Length | Up
to 9.15 m (30') or 60 KgM |
Up
to 10.70 m (35') or 84 KgM |
Up
to 13.50 m (44') or 105 KgM |
Up
to 15 m (50') or 185 KgM |
Cylinder Type | VHM35
DTP 2200222 |
VHM40
DTP 2200075 |
VHM40-254 2200496 |
VHM50
DTP 2200497 |
Pump volume | 36
cc 60 cc |
36
cc 60 cc 90 cc |
60 cc 90 cc |
90 cc |
Number
of turns for 70° rudder travel |
4,1 2,5 |
5,3 3,2 2,1 |
4,0 2,7 |
3,9 |
Jefa H300 pedestal examples |
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