If Steering wheel is rotated in clock wise, oil is pump out from the port ( right port from the front view) into the port of cylinder ( starboard side ).
This cause the cylinder rod move to forward, which move the boat rudder to right side ( starboard) Oil displaced from the opposite end of the cylinder flows back to the helm pump. For steering in the opposite direction, simply turn the helm pump the other way.
When no course corrections are required, the inbuilt lock valve holds the rudder stationary.
HELM PUMP
- SS 304 SHAFT
- Adjustable Displacement from 48cc to 85cc for HP4590T
- Fixed Displacement for NSH helm pump
- Lock Valve Inbuilt
- Mounting Hardware and steering wheel mounting hardware supplied as standard
- Interconnecting ports for dual stations of steering
APPLICATION GUIDE
| Complete Model | System Basic Recommend Components | Wheel turns | Recommend | Suitable Steering Wheel Size | ||
|---|---|---|---|---|---|---|
| torque | engine power | |||||
| Cylinder | Helm Pump | Lock to lock | kgf.m | HP | ||
| MI 34N | IOC-4020 | NSH 022 | 5.5 | 34 | 75 | Dia 350mm |
| MI 48N | IOC-4021 | NSH 025 | 6.7 | 48 | 75 | |
| MI 61N | IOC-4022 | NSH 030 | 7.1 | 61 | 110 | |
| MI 75N | IOC-5024 | NSH 037 | 7.1 | 75 | 110 | Dia 395mm |
| MI 96N | IOC-5025 | NSH 044 | 7.7 | 96 | 140 | |
| MI 117N | IOC-5026 | NSH 044 | 9.3 | 117 | 180 | |
| Complete Model | System Basic Recommend Components | Wheel turns | Recommend | Suitable Steering Wheel Size | ||
|---|---|---|---|---|---|---|
| torque | engine power | |||||
| Cylinder | Helm Pump | Lock to lock | kgf.m | HP | ||
| MI 118H | IOC-5024 | HP 4590T | 3.1~5.5 | 118 | 180 | Dia 600mm |
| MI 151H | IOC-5025 | HP 4590T | 4.0~7.0 | 151 | 250 | |
| MI 185H | IOC-5026 | HP 4590T | 4.8~8.6 | 185 | 250 | |
| MI 270H | IOC-6325 | HP 4590T | 7.1~12.5 | 270 | 250 | |
| MI 329H | IOC-6326 | HP 4590T | 8.6~15.3 | 329 | 350 | |
