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12 Constant Running Hydraulic Pump - Installation Guide
Three line systems
In a three line system, the hydraulic fluid flows in only one direction:
• out of the helm pump to the ram
• returning from the other side of the ram to the reservoir via a
common return line
The system will include a check valve block to direct all returned
fluid from the ram back to the reservoir.
Connect the autopilot pump to the steering system as shown in
Figure 5.
Figure 5: Autopilot pump location for three line systems
D
5166-1
Helm
pump
CR pump
Steering ram
Ram pipes
Reservoir
pipe
Check valve