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14 GHP 10 Marine Autopilot System Installation Instructions
To connect the pump to the hydraulic lines:
1. Consult the hydraulic layout diagrams starting on page 5 to nd the correct place to connect the pump to your hydraulic system.
2. Prepare to disconnect the hydraulic lines in your boat as specied by the manufacturer of your boat or steering system.
3. Disconnect the hydraulic lines from the steering system where appropriate.
4. Add additional hose where necessary, and add the included t-connectors in the hydraulic lines.
5. Add hydraulic hose from the t-connectors to the pump, using the included ttings to attach the hose to the pump.
6. Add hydraulic hose from the return connector at the back of the helm to the pump, using the included ttings.
7. Connect the hoses to the upper ttings, the lower ttings, or a combination of both ttings on the pump. Do not connect more than
three hoses to the pump (port, starboard, and return).
8. Insert, tighten, and seal the included plugs in the three unused pump ttings.
9. You will eventually need to bleed the hydraulic system, but not until the Shadow Drive is installed. See page 24 for more
information.
NOTE: The pump may vibrate the hydraulic lines and cause noise when the autopilot is running. To eliminate the noise, tie the hydraulic
lines to a solid surface.
Operating the Shutoff Valve
The 2.0 L and the 1.2 L pumps feature a shutoff valve for troubleshooting and repairing the system. To engage the shutoff valve and
isolate the pump from the hydraulic system, fully tighten the three brass screws near the lower hydraulic connectors. To disengage the
shutoff valve, loosen the three brass screws until they stop.
Brass shutoff
screws
Socket-headed cap screws
Socket-headed cap screws
CAUTION: Do not force the three brass screws past the stopping point when disengaging the shutoff valve. Forcing the screws past the
stopping point may permanently damage the manifold.
When the shutoff valve is engaged, the boat will steer normally, and the pump will not control the steering system. When the shutoff
valve is engaged, you can remove the pump from the system for repair without disconnecting any hydraulic lines.
To remove the pump from the shutoff-valve manifold:
1. Tighten the three brass screws near the lower hydraulic connectors.
2. Remove the four socket-head cap screws that connect the manifold to the pump.
3. The manifold is no longer connected to the pump, and the pump can be disconnected from the ECU and removed from its
mounting location. The hydraulic steering system will operate normally.
To reconnect the pump to the shutoff-valve manifold:
1. Remount the pump and reconnect the pump to the ECU.
2. Connect the manifold to the pump using the four socket-head cap screws.
3. Loosen the three brass screws near the lower hydraulic connectors until they stop. Do not loosen the screws past the stopping
point.
Connecting the Pump to the ECU
Do not connect the pump to the ECU until you have mounted the ECU to the boat following the procedures on page 16.