To connect the pump to the hydraulic lines:
1. Consult the hydraulic layout diagram below to determine the correct place to connect the pump to your hydraulic system.
2. Prepare to disconnect the hydraulic lines in your boat as specified by the manufacturer of your boat or steering system.
3. Disconnect the hydraulic lines from the steering system where appropriate.
4. Use the diagram on
page 2
5. Remove the plugs from the five connections on the pump labeled C1, C2, H1, H2, and Tank.
6. Route hydraulic hose from the helm to the pump, and from the cylinder to the pump. Be sure to route three hoses to the helm, one for port,
one for starboard, and one for the return line. Add hose if needed.
7. Use the correct connectors to connect the hoses to the pump.
•
The C1, C2, and Tank ports on the pump are SAE #6 straight-thread O-ring ports, and the H1, and H2 ports are SAE #4 straight-thread
O-ring ports. Do not attempt to thread male pipe-thread fittings into these ports.
•
The included fittings adapt from straight-thread O-ring port to female pipe-thread. Use the included fittings only if they are applicable to
your hydraulic fitting configuration.
8. Connect the hoses to the helm and to cylinder.
9. You must bleed the hydraulic system, but wait until after you install the Shadow Drive according to the GHP 10 Installation Instructions. See
page 4
for more information on bleeding the hydraulic system.
NotE: The pump may vibrate the hydraulic lines and cause noise when the autopilot is running. To eliminate the noise, secure the hydraulic lines to a
solid surface.
Hydraulic Layout Diagram
Use the diagram below when planning your hydraulic layout using the Hydac 2.1 L pump. Do not use the hydraulic layout drawings for the
2.1 L pump in the GHP 10 Installation Instructions.
Port fitting
Starboard fitting
Notes:
•
Mount the pump horizontally if possible. Do not mount the pump vertically with the pump end (hydraulic connections) down.
•
Shadow Drive
◦
Mount the Shadow Drive horizontally and as level as possible.
◦
Install the Shadow Drive in either the port or the starboard hydraulic line.
◦
Always install a length of hose between the helm and the Shadow Drive.
◦
Install the Shadow Drive between the pump and the helm.
◦
Do not install the Shadow Drive directly to the helm.
◦
Do not install the Shadow Drive between the pump and the cylinder.
Hydac 2.1 L Pump Installation Addendum
to identify the connectors on the pump.
Helm
Shadow Drive
Port line (C2)
Starboard line (C1)
Return line (Tank)