Garmin GHP Reactor Hydraulic Corepack with SmartPump Installation Manual download pdf (Page 7)

• If the boat has a power-assist module, connect the return

line T-connector to the pump fitting labeled with a T.

Install the Shadow Drive in the port or starboard hydraulic

line between the helm and the T-connector (Installing the

Shadow Drive).

Install a shut-off valve (not included) on each hydraulic line

that connects directly to the pump.

Insert, tighten, and seal the included plugs in the unused

pump fittings, if they are not already in place.

Connecting the Pump to Power

WARNING

When connecting the power cable, do not remove the in-line

fuse holder. To prevent the possibility of injury or product

damage caused by fire or overheating, the appropriate fuse

must be in place as indicated in the product specifications. In

addition, connecting the power cable without the appropriate

fuse in place will void the product warranty.

You should connect the pump power cable directly to the boat

battery, if possible. Although it is not recommended, if you

connect the power cable to a terminal block or other source,

connect it through a 40 A fuse.

If you plan to route the pump through a breaker or a switch near

the helm, you should use an appropriately sized relay and

control wire. Do not extend the pump power cable in this case.

Route the connector-terminated end of the power cable to the

pump, but do not connect it to the pump.

Route the bare-wire end of the power cable to the boat

battery.

If the cable is not long enough, it can be extended by splicing

a larger wire (Power Cable Extensions).

Observe the cautions at the beginning of this section about

extending the power cable.

Connect the black wire (-) to the negative (-) terminal of the

battery.

Connect the red wire (+) to the positive (+) terminal of the

battery.

Leave the power cable disconnected from the pump at this

time.

You should connect the power cable to the pump only after

you install all of the other autopilot components to avoid

unwanted activity from the pump.

Power Cable Extensions

If necessary, the power cable can be extended using the

appropriate wire gauge for the length of the extension.

Item Description

Fuse

Battery

9 ft. (2.7 m) no extension

Item Description

Splice

10 AWG (5.26 mm²) extension wire

Fuse

8 in. (20.3 cm)

Item Description

Battery

8 in. (20.3 cm)

Up to 15 ft. (4.6 m)

Item Description

Splice

8 AWG (8.36 mm²) extension wire

Fuse

8 in. (20.3 cm)

Battery

8 in. (20.3 cm)

Up to 23 ft. (7 m)

Item Description

Splice

6 AWG ( 13.29 mm²) extension wire

Fuse

8 in. (20.3 cm)

Battery

8 in. (20.3 cm)

Up to 36 ft. (11 m)

Bleeding the Hydraulics

NOTICE

This is a general procedure for bleeding a hydraulic steering

system. Refer to the instructions provided by the manufacturer

of the steering system for more-specific information about

bleeding the system.

Before you bleed the hydraulic system, you should verify that all

hose connections are complete and fully tightened.

Select an option:

• If the helm reservoir contains insufficient fluid, fill it as

needed.

• If the helm reservoir contains excess fluid, remove the

excess to avoid fluid overflow during the bleeding process.

Insert a bypass hose between the cylinder bleed ports.

TIP: If you use a clear plastic hose for this bypass, you can

observe air bubbles during the bleeding processes.

Manually steer the helm fully to port.

Open both bypass valves at the cylinder fittings.

Open the bypass valve on the pump manifold.

Manually turn the helm slowly to port over three minutes.

TIP: You can stop turning when you no longer see air moving

through the bypass hose.

Turn on the autopilot system and disable the Shadow Drive.

You can refer to the autopilot system documentation for more

information on disabling the Shadow Drive.

Hold (port) on the helm control for at least 10 seconds.

TIP: You can stop holding when you no longer see air

moving through the bypass hose.

Close both bypass valves at the cylinder fittings.

Close the bypass valve on the pump manifold.

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Garmin GHP Reactor Hydraulic Corepack with SmartPump Installation Manual Page 7

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