Garmin 190-01166-02, GHP 10V User Manual
GHP™ 10 Marine Autopilot System Installation Instructions
To obtain the best possible performance and to avoid damage to your boat, install the Garmin® GHP 10 marine autopilot system
according to the following instructions. Professional installation of the autopilot system is highly recommended. Specic training in
hydraulic pipe-tting and in marine electrical connections is required to properly install the autopilot system.
Read all installation instructions before proceeding with the installation. If you experience difculty during the installation,
contact Garmin Product Support.
NOTE: If your boat uses a Mercury® Verado® engine, you must also purchase a Mercury Verado Adapter Kit (Garmin part number
010-11202-00). Contact your local Garmin dealer or Garmin Product Support for ordering information.
Product Registration
Help us better support you by completing our online registration today. Go to http://my.garmin.com. Keep the original sales receipt, or
a photocopy, in a safe place.
For future reference, write the serial number assigned to each component of your GHP 10 system in the spaces provided on page 2.
The serial numbers are located on a sticker on each component.
Contact Garmin
Contact Garmin Product Support if you have any questions while installing your GHP 10. In the USA, go to www.garmin.com/
support, or contact Garmin USA by phone at (913) 397.8200 or (800) 800.1020.
In the UK, contact Garmin (Europe) Ltd. by phone at 0808 2380000.
In Europe, go to www.garmin.com/support and click Contact Support for in-country support information, or contact Garmin
(Europe) Ltd. by phone at +44 (0) 870.8501241.
WARNINGS
You are responsible for the safe and prudent operation of your vessel. The GHP 10 is a tool that will enhance your capability to
operate your boat. It does not relieve you from the responsibility of safely operating your boat. Avoid navigational hazards and never
leave the helm unattended.
Always be prepared to promptly regain manual control of your boat.
Learn to operate the GHP 10 on calm and hazard-free open water.
Use caution when operating the GHP 10 at high speeds near hazards in the water, such as docks, pilings, and other boats.
See the Important Safety and Product Information guide in the product box for product warnings and other important information.
CAUTION
Always wear safety goggles, ear protection, and a dust mask when drilling, cutting, or sanding.
Notice
When drilling or cutting, always check the opposite side of the surface. Be aware of fuel tanks, electrical cables, and hydraulic hoses.
February 2010 190-01166-02 Rev. B Printed in Taiwan
GHP 10 Package Contents and Tools Needed
The GHP 10 autopilot system consists of multiple components. Familiarize yourself with all of the components before beginning
installation. You must know how the components operate together in order to correctly plan the installation on your boat.
As you familiarize yourself with the GHP 10 components, conrm that your package includes the following items. All the
components, except the hydraulic pump, are included in the GHP 10 core box. The pump is packaged separately. If any parts are
missing, contact your Garmin dealer immediately.
The Main Components
The GHP 10 autopilot system consists of ve main components: the Electronic Control Unit (ECU), the Course Computer Unit
(CCU), a hydraulic pump, the Shadow Drive
The Course Computer Unit (CCU)
The CCU acts as the “brain” of the GHP 10. The CCU contains the sensory equipment used to determine
heading and engine speed. The CCU connects to the Electronic Control Unit (ECU), to the GHC 10, and
to the tachometer of your boat with a single cable. The CCU also connects to a NMEA 2000® network to
communicate with the GHC 10, and to an optional NMEA 2000-compatible GPS device. See page 32.
Garmin part number: 010-11353-00
Serial number
The Electronic Control Unit (ECU)
The ECU connects to the CCU and to the pump. The ECU controls the pump based on information from
the CCU. The ECU powers both the CCU and the pump.
™
, and the GHC™ 10 user control interface.
Garmin part number: 010-11053-00
Serial number
The Hydraulic Pump (and motor)
1.2 L/2.0 L Pump1.2 L/2.0 L Pump
Compact 2.1 L PumpCompact 2.1 L Pump
The hydraulic pump (and motor) steers your boat by interacting with the hydraulic steering system, based on commands you enter
using the GHC 10. The pump is not included in the GHP 10 core package box because the type of pump you use with your GHP 10 is
determined by the size and type of steering system on your boat. The pump is in a separate box.
The 1.2 L/2.0 L pump is designed for use on a balanced-cylinder steering system, but can be adapted for use with an unbalanced-
•
cylinder steering system.
The compact 2.1 L pump can be adapted for use on either a balanced-cylinder or an unbalanced-cylinder steering system.
•
The legacy 2.1 L pump can only be used on a balanced-cylinder steering system.
•
See page 19 for more information on using compatible pumps with unbalanced-cylinder steering systems.
•
Garmin part numbers: 010-11097-00 (2.0 L pump), 010-11098-00 (1.2 L pump), 010-11099-10 (compact 2.1 L Pump),
and 010-11099-00 (legacy 2.1 L pump - discontinued)
Legacy 2.1 L PumpLegacy 2.1 L Pump
Pump model and serial number
2 GHP 10 Marine Autopilot System Installation Instructions
The Shadow Drive
The Shadow Drive is a sensor you install in the hydraulic steering lines of your boat. While the GHP 10
is engaged, the Shadow Drive temporarily disengages the autopilot when you manually take control of
the helm. When you establish a new straight line heading, the Shadow Drive automatically reengages the
autopilot.
Garmin part number: 010-11054-00
Serial number
The GHC 10
Use the GHC 10 to operate the GHP 10 autopilot system. Using the GHC 10, you engage and steer the
GHP 10. You also set up and customize the GHP 10 using the GHC 10. The GHC 10 connects to a NMEA
2000 network to communicate with the CCU and with an optional NMEA 2000-compatible GPS device
(to use waypoint and route information). If a NMEA 2000-compatible GPS device is not available, you
can wire the GHC 10 to an optional NMEA 0183-compatible GPS device instead.
Garmin part number: 010-00688-00
Serial number
Cables and Connectors
The GHP 10 autopilot system contains multiple cables. These cables connect the components to power, to each other, to an alarm, and
to optional devices such as a NMEA 0183-compatible GPS device.
CCU/ECU Interconnect Cable
This cable connects the CCU to the ECU. A portion of this cable contains color-coded wires with bare ends. These wires connect the
CCU to the tachometer of your boat, to the Shadow Drive, and to the alarm. (Garmin part number: 010-11055-00)
The Alarm
The alarm is wired to the CCU and provides audible alerts from the GHP 10. See page 27. (Garmin part number: 010-11056-00)
ECU Power Cable
This cable powers the ECU. Wire this to the battery of your boat as one of the last connections made in the GHP 10 installation.
See page 33. (Garmin part number: 010-11057-00)
GHC 10 NMEA 0183 Data Cable
This cable is included in the GHC 10 box. This cable is used to connect to an optional NMEA 0183-compatible GPS device and to the
Accessory Turn On of the GHP 10. See page 29. (Garmin part number: 320-00023-07)
3GHP 10 Marine Autopilot System Installation Instructions
NMEA 2000 Cables and Connectors
The NMEA 2000 cables connect the CCU and the GHC 10 to the NMEA 2000 network. Use the NMEA 2000 power cable and two
terminators to create a NMEA 2000 network on your boat if one does not exist. For more information on NMEA 2000, see page 30.
NMEA 2000 drop cable, 6 ft. (2 m) (×2), Garmin part number: 320-00387-00 NMEA 2000 T-connector (×3), Garmin part
number: 330-00563-00
NMEA 2000 power cable, Garmin part number: 320-00389-00 (×1) NMEA 2000 terminators, male Garmin part
number: 330-00564-00 (×1); female Garmin part
number: 330-00565-00 (×1)
NMEA 2000 extension cables are available if needed. Contact your local Garmin dealer or Garmin Product Support for ordering
information.
Type Length Garmin Part Number
Type Length Garmin Part Number
CCU/ECU Interconnect Extension Cables (Not Included)
When installing the GHP 10 system, you may need to mount the CCU farther
than 16 ft. (5 m) from the ECU. Garmin offers optional replacement or
extension cables for purchase if this is necessary. Contact your local Garmin
dealer or Garmin Product Support for ordering information.
Replacement 32 ft. (10 m) 010-11055-01
Replacement 32 ft. (10 m) 010-11055-01
Replacement 66 ft. (20 m) 010-11055-02
Replacement 66 ft. (20 m) 010-11055-02
Extension 16 ft. (5 m) 010-11156-00
Extension 16 ft. (5 m) 010-11156-00
Extension 50 ft (15 m) 010-11156-01
Extension 50 ft (15 m) 010-11156-01
Extension 82 ft. (25 m ) 010-11156-02
Extension 82 ft. (25 m ) 010-11156-02
CCU/ECU Interconnect Extension Cables
CCU/ECU Interconnect Extension Cables
External Tachometer Filter (Not Included)
If your tachometer source is a direct alternator connection or other signal larger than 12 Vdc, or if you sporadically receive tachometer
errors, install an external tachometer lter (Garmin part number: 010-11399-00). Contact your local Garmin dealer or Garmin product
support for ordering information.
Tools Needed
•
Safety glasses
Drill and drill bits
•
3 1/2 in. (90 mm) hole saw
•
Wrenches
•
Wire cutters/stripers
•
Phillips and at screwdrivers
•
Cable ties
•
Waterproof wire connectors (wire nuts) or heat-shrink tubing
•
and a heat gun.
Marine sealant
•
Compass (to test for magnetic interference when determining
•
the best location to install the CCU)
Anti-seize lubricant (optional)
•
NOTE: Mounting screws are provided for the GHC 10, for the CCU, for the ECU, and for the pump. If the provided screws are not
appropriate for the mounting surface, you will need to provide the correct types of screws.
4 GHP 10 Marine Autopilot System Installation Instructions
Hydraulic supplies (Shipyard Supply)
•
Additional hydraulic hose with machine-crimped or
◦
eld-replaceable ttings that have a minimum rating of
1,000 lbf/in
Additional hydraulic uid
◦
Rags
◦
Thread sealant (Loctite® Pro Lock Tight® multipurpose
◦
2
anaerobic gel, part number 51604 or equivalent)
Helm/hydraulic bleeding equipment
◦
Installation Preparation
Before installing the GHP 10 autopilot system, it is important for you to completely understand where all the components will be
located on your boat. Temporarily place all the components where you plan to install them. Ensure that all cables and hydraulic hoses
can reach the necessary components before mounting any components.
NOTE:
There is an installation checklist on the last page of these instructions. Remove the last page and refer to the checklist as you
proceed through the GHP 10 installation.
Electrical/Data Connection and Mounting Considerations
The GHP 10 components connect to each other and to power using the included cables. Ensure that the correct cables reach each
component and that each component is in an acceptable location before mounting or wiring any components. Read the following
considerations and consult the diagrams on pages 6–8 before you begin installation.
The Pump and the ECU
The cables from the pump to the ECU cannot be extended.
•
The pump must be located within 19 in. (0.5 m) of the ECU, and mounted horizontally if possible. If you cannot mount the pump
•
horizontally, do not mount the pump vertically with the pump head (connectors) down.
The ECU power cable connects to the boat battery.
•
The CCU and the ECU
Mount the CCU in the forward half of the boat, no higher than 10 ft. (3.05 m) above the waterline.
•
Do not mount the CCU or the ECU in a location where they will be submerged or exposed to wash-down.
•
Do not mount the CCU near magnetic material, magnets (speakers and electric motors), or high-current wires. Mount the
•
CCU at least 24 in. (0.6 m) away from movable or changing magnetic disturbances such as anchors, anchor chain, wiper motors,
tool boxes, and the autopilot pump. Use a handheld compass to test for magnetic interference in the area.
You can mount the CCU below the waterline, if it is not in a location where it will be submerged or exposed to wash-down.
•
Mount the CCU bracket on a vertical surface or under a horizontal surface, so that the connected wires hang straight down.
•
The CCU/ECU interconnect cable connects the CCU to the ECU, and is 16 ft. (5 m) long. If you cannot mount the CCU within
•
16 ft. (5 m) of the ECU, replacement and extension cables are available. (See page 4).
The CCU/ECU interconnect cable connects the CCU to the Shadow Drive, the alarm buzzer, the tachometer of the boat, and the
•
yellow CCU signal wire of the GHC 10 using wires with bare ends. See page 26 for wiring instructions and diagrams.
If your boat uses an electrical system that provides more than 12 Vdc, or if you sporadically receive tachometer errors, install an
•
external tachometer lter (010-11399-00). Contact your local Garmin dealer or Garmin product support for more information.
The CCU and the GHC 10
The CCU and the GHC 10 connect to a NMEA 2000 network. If you do not have a NMEA 2000 network on your boat, the
•
equipment necessary to build one is provided. For instructions on setting up the NMEA 2000 network, see page 30.
You can connect an optional NMEA 2000-compatible GPS device to the NMEA 2000 network to use waypoint and route data with
•
the GHP 10.
The GHC 10
Connect the GHC 10 to a NMEA 2000 network.
•
Connect the yellow CCU signal wire from the GHC 10 data cable to the yellow CCU signal wire of the CCU/ECU interconnect
•
cable. Connect the black wire to CCU ground.
If you do not have an optional NMEA 2000-compatible GPS device, you can wire an optional NMEA 0183-compatible GPS
•
device to the data cable of the GHC 10 instead (see page 32).
The Shadow Drive
Mount the Shadow Drive horizontally, as level as possible.
•
Mount the Shadow Drive at least 12 in. (0.3 m) away from magnetic material such as speakers and electric motors,
•
including the autopilot pump.
Install the Shadow Drive closer to the helm than to the pump.
•
5GHP 10 Marine Autopilot System Installation Instructions
ENCODER
CCU
POWER
}
PUMP
Yellow CCU signal wire
(see page 29)
GHC 10
Ignition or
in-line switch
Red (+)
9–16 Vdc
3 A fuse
Pump
(compact 2.1 L pictured)
Black (-)
Drain (-)
CCU ground
NMEA 2000 network (see page 30)
NMEA 2000 power cable
ECU
Red (+)
Black (-)
12 Vdc*-40 A fuse.
See page 33 for
cable size and length
requirements.
Black (-)
CCU
CCU/ECU Interconnect cable
For tachometer wiring,
see page 27
Boat tachometer
Orange - unconnected
White (+)
Red (+)
Blue (-)
For CCU bare-wire connections, see page 26.
Brown (+)
Yellow CCU signal wire (see page 29)
Black (-)
Alarm buzzer
Red (+)
Black (-)Black (-)
Shadow Drive
GHP 10 General Wiring Outline
Notes:
This diagram is for planning purposes only. Specic wiring diagrams are included in the detailed installation instructions for
•
each component. Hydraulic connections are not shown in this diagram.
If your boat uses an electrical system that provides more than 12 Vdc, or if you sporadically receive tachometer errors, install an
•
external tachometer lter (010-11399-00). Contact your local Garmin dealer or Garmin product support for more information.
Connect an optional NMEA 0183-compatible GPS device to the data cable on the GHC 10. See page 32 for more information.
•
Connect an optional NMEA 2000-compatible GPS device to the NMEA 2000 network. See page 32 for more information.
•
* Newer ECU units are compatible with 24 Vdc systems. See page 25 for more information.* Newer ECU units are compatible with 24 Vdc systems. See page 25 for more information.
6 GHP 10 Marine Autopilot System Installation Instructions
Single-helm Layout Guidelines
GHC 10
CCU
ECU
Pump
(1.2 L pictured)
12 Vdc*
NMEA 2000 network
NOTE: This diagram is for planning purposes only. Specic wiring diagrams are included in the detailed installation instructions for
each component. Hydraulic connections are not shown in this diagram.
* Newer ECU units are compatible with 24 Vdc systems. See page 25 for more information.* Newer ECU units are compatible with 24 Vdc systems. See page 25 for more information.
7GHP 10 Marine Autopilot System Installation Instructions
Dual-helm Layout Guidelines
GHC 10
GHC 10
CCU
ECU
Pump (1.2 L pictured)
12 Vdc*
NMEA 2000 network
NOTE: This diagram is for planning purposes only. Specic wiring diagrams are included in the detailed installation instructions for
each component. Hydraulic connections are not shown in this diagram.
* Newer ECU units are compatible with 24 Vdc systems. See page 25 for more information.* Newer ECU units are compatible with 24 Vdc systems. See page 25 for more information.
8 GHP 10 Marine Autopilot System Installation Instructions
Hydraulic Considerations – 2.0 L and 1.2 L Pumps
Different boats have different hydraulic considerations you must examine before mounting the pump or disconnecting any hoses.
Before starting the hydraulic installation, verify the type of hydraulic steering in your boat, and where to install the appropriate type of
pump.
Notice
If the hydraulic steering of your boat does not match the hydraulic layouts in this manual, contact Garmin Product Support.
2.0 L or 1.2 L Pump Hydraulic Layout on Single-Helm Boats (without Power Assist)
Starboard line
Return line
Port line
P
RS
Helm
Shadow Drive
2.0 L/1.2 L pump
(and motor)
Notes:
2.0 L/1.2 L pump (and motor):
•
An unbalanced cylinder requires an
◦
unbalanced valve on the pump (page 21)
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 steering line.
Always install a length of hose between the
◦
helm and the Shadow Drive.
Do not install the Shadow Drive directly to
◦
the helm.
Install the Shadow Drive between the pump
◦
and the helm.
Do not install the Shadow Drive between
◦
the pump and the cylinder.
Port tting
Starboard tting
Balanced cylinder
Notice
Do not turn the system on until you bleed all the air from the helm, the Shadow Drive, the pump, and all the hydraulic lines.
See page 34.
9GHP 10 Marine Autopilot System Installation Instructions
2.0 L or 1.2 L Pump Hydraulic Layout on Dual-Helm Boats
Shadow Drive
2.0 L/1.2 L pump
(and motor)
PRS
Lower helm
Starboard line
Return line
Port line
PRS
Port tting
Upper helm
Starboard tting
Balanced cylinder
Notes:
2.0 L/1.2 L pump (and motor):
•
An unbalanced cylinder requires an unbalanced valve on the pump (page 21).
◦
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 steering line.
◦
Always install a length of hose between the helm and the Shadow Drive.
◦
Install the Shadow Drive between the pump and both helms.
◦
Do not install the Shadow Drive directly to the helm.
◦
Do not install the Shadow Drive between the pump and the cylinder.
◦
Do not install the Shadow Drive between the two helms.
◦
Notice
Do not turn the system on until you bleed all the air from the helm, the Shadow Drive, the pump, and all the hydraulic lines.
See page 34.
10 GHP 10 Marine Autopilot System Installation Instructions
2.0 L or 1.2 L Pump Hydraulic Layout on SeaStar Power Assist-Enabled Boats
Notes:
Power Assist module:
•
It may be necessary to remove the
◦
Power Assist module to gain access to
Starboard line
the ttings, the hoses, and the bleedtee tting.
Remove the bleed-tee tting from the
◦
Starboard line
Return line
Return line
Port line
Port line
Power Assist module and relocate it to
the return port on the pump.
S R P
2.0 L/1.2 L pump (and motor):
•
Install the pump to the steering lines
◦
S R P
between the cylinder and the Power
Assist module.
Do not install the pump to the
◦
Helm
Helm
steering lines between the helm and
the Power Assist module.
An unbalanced cylinder requires
◦
an unbalanced valve on the pump
Bleed-tee tting
Bleed-tee tting
(relocate to the pump)
(relocate to the pump)
(See page 21)
Mount the pump horizontally if
◦
possible. Do not mount the pump
vertically with the pump end
2.0 L/1.2 L pump
2.0 L/1.2 L pump
(and motor)
(and motor)
(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
steering line.
Always install a length of hose
◦
between the helm and the Shadow
Drive.
Do not install the Shadow Drive
◦
directly to the helm.
Install the Shadow Drive between the
◦
helm and the Power Assist module.
Do not install the Shadow Drive
◦
between the Power Assist module
and the pump.
Do not install the Shadow Drive between the Power Assist module and the cylinder.
◦
Shadow Drive
Shadow Drive
H1 H2
H1 H2
Return line
Return line
Port tting
Port tting
C2C1
C2C1
Starboard tting
Starboard tting
Balanced cylinder
Balanced cylinder
Sea Star
Sea Star
Power Assist
Power Assist
module
module
Notice
Do not turn the system on until you bleed all the air from the helm, the Shadow Drive, the pump, and all the hydraulic lines.
See page 34.
11GHP 10 Marine Autopilot System Installation Instructions
Hydraulic Considerations - Compact 2.1 L Pump
Different boats have different hydraulic considerations you must examine before mounting the pump or disconnecting any hoses.
Before starting the hydraulic installation, verify the type of hydraulic steering in your boat, and where to install the appropriate type of
pump.
Notice
If the hydraulic steering of your boat does not match the hydraulic layouts in this manual, contact Garmin Product Support.
Compact 2.1 L Pump Hydraulic Layout on Single-Helm Boats
Balanced cylinder
Port ttingStarboard tting
Notes:
Notes:
Compact 2.1 L pump (and motor):
•
Compact 2.1 L pump (and motor):
•
◦
◦
To use the compact 2.1 L pump on a system
To use the compact 2.1 L pump on a system
with an unbalanced cylinder, follow the
with an unbalanced cylinder, follow the
procedures on page 24.
procedures on page 24.
Mount the pump horizontally if possible. Do not
◦
Mount the pump horizontally if possible. Do not
◦
mount the pump vertically with the pump end
mount the pump vertically with the pump end
(hydraulic connections) down.
(hydraulic connections) down.
Return line (Tank)
Starboard line
Helm
P R S
Port line
Compact 2.1 L
pump (and motor)
Shadow Drive:
•
Shadow Drive:
•
Mount the Shadow Drive horizontally and as
◦
Mount the Shadow Drive horizontally and as
◦
level as possible.
level as possible.
Install the Shadow Drive in either the port or the
◦
Install the Shadow Drive in either the port or the
◦
starboard hydraulic line.
starboard hydraulic line.
Always install a length of hose between the helm
◦
Always install a length of hose between the helm
◦
and the Shadow Drive.
and the Shadow Drive.
Do not install the Shadow Drive directly to the
◦
Do not install the Shadow Drive directly to the
◦
helm.
helm.
Install the Shadow Drive between the pump and
◦
Install the Shadow Drive between the pump and
◦
the helm.
the helm.
Do not install the Shadow Drive between the
◦
Do not install the Shadow Drive between the
◦
pump and the cylinder.
pump and the cylinder.
Port line
Return line
Starboard line
Shadow Drive
Notice
Do not turn the system on until you bleed all the air from the helm, the Shadow Drive, the pump, and all the hydraulic lines.
See page 34.
12 GHP 10 Marine Autopilot System Installation Instructions
Compact 2.1 L Pump Hydraulic Layout on Dual-Helm Boats
Balanced cylinder
Starboard tting
Return line
Starboard line
Port tting
Lower helm
Port line
Compact 2.1 L
pump (and motor)
P R S
Upper helm
P R
S
Port line
Starboard line
Return line
Shadow Drive
Notes:
Compact 2.1 L pump (and motor):
•
◦
To use the compact 2.1 L pump on a system with an unbalanced cylinder, follow the procedures on
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.
◦
Notice
page 24.
Do not turn the system on until you bleed all the air from the helm, the Shadow Drive, the pump, and all the hydraulic lines.
See page 34.
13GHP 10 Marine Autopilot System Installation Instructions
Compact 2.1 L Pump Hydraulic Layout on SeaStar Power Assist-Enabled Boats
Notes:
Power Assist module:
•
It may be necessary to remove the
◦
Power Assist module to gain access to
the ttings, the hoses, and the bleed-tee
tting
You may need to add a tee tting in the
◦
return line at the Power Assist module
to connect the pump.
Compact 2.1 L pump (and motor):
•
Install the pump to the steering lines
◦
between the cylinder and the Power
Assist module.
Do not install the pump to the
◦
steering lines between the helm and
the Power Assist module.
◦
To use the compact 2.1 L pump on a
system with an unbalanced cylinder,
follow the procedures on page 24.
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 steering
line.
Always install a length of hose between
◦
the helm and the Shadow Drive.
Install the Shadow Drive between the
◦
helm and the Power Assist module.
Do not install the Shadow Drive
◦
directly to the helm.
Do not install the Shadow Drive
◦
between the Power Assist module and
the pump.
Do not install the Shadow Drive
◦
between the Power Assist module and
the cylinder.
Notice
Do not turn the system on until you bleed all
the air from the helm, the Shadow Drive, the
pump, and all the hydraulic lines. See page 34.
Starboard tting
C1
C2
H1
H2
Balanced cylinder
Starboard line
Port line
Sea Star
Power Assist
module
Port line
Return line
Starboard line
Port tting
Starboard line
Port line
Return line
Shadow Drive
Helm
SRP
14 GHP 10 Marine Autopilot System Installation Instructions
Alternative Compact 2.1 L Pump Hydraulic Congurations
Depending on the hydraulic layout of your boat, alternative hydraulic installations using the compact 2.1L pump are possible:
The C1 and H1 ports are directly connected to each other internally, and the C2 port is directly connected to H2. Because these
•
ports are connected internally, you can leave the plugs in the C ports and use tee ttings to connect both the helm and cylinder
hoses to the H ports. Though you should use all four ports for an ideal installation, this type of installation will steer the boat
correctly.
If you plan to use this alternative compact 2.1L pump installation on a larger boat with long spans of hydraulic hose, the tting
•
size you choose is important. The ttings on the C ports are SAE #6, while the ttings on the H ports are SAE #4. Therefore, for
alternative installations on larger boats, it is best to move the plugs from the C ports to the H ports and use tee ttings to connect
both the helm and cylinder hoses to the larger C ports as illustrated below.
H ports
Hydraulic tee tting
Starboard line
Return line
C ports
Hydraulic tee tting
Compact 2.1 L
pump
(and motor)
Port line
Alternative Hydraulic Installation Using the C (SAE #6) Ports
15GHP 10 Marine Autopilot System Installation Instructions
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