Hydraulic Fluid Bleeding
notice
The following is a general procedure for bleeding a hydraulic steering system. Refer to the instructions provided by the manufacturer of the steering system for
Before you bleed the hydraulic system, ensure that all hose connections are complete and fully tightened. The pump has a bypass valve to allow air to be bled from the system.
Hydraulic Bleeding
1.Complete an action:
•If the helm reservoir contains insufficient fluid, fill it with the appropriate amount of hydraulic fluid.
•If the helm reservoir contains excess fluid, remove the excess to avoid fluid overflow during the bleeding process.
2.Manually steer the helm to both cylinder stops.
3.Manually steer the helm fully to port.
4.Open a bypass valve at the cylinder fitting.
5.Turn the helm slowly to port for three minutes.
6.Close the cylinder bypass valve.
7.Add fluid to the helm reservoir if necessary.
8.Repeat steps 2 through 7 until the helm reservoir remains full.
9.Open the bypass valve on the pump manifold.
10.Turn on the autopilot system and disable the Shadow Drive.
11.Hold 
on the GHC 10 for 10 seconds and watch for steering movement.
12.Select an option:
•If there is steering movement, proceed to step 13.
•If there is no movement, hold 
until steering movement occurs.
13.Hold the soft key that produces steering movement and steer fully to the stop.
14.Steer the helm to the opposite stop using the GHC 10.
15.Close the bypass valve on the pump manifold.
16.When hydraulic bleeding is complete,
Corrosion Blocker
notice
To ensure long life of all parts, apply corrosion blocker to the pump at least twice yearly.
After the pump installation is complete and all hydraulic connections and electrical connections are made, apply a
Unbalanced Cylinder Configuration
If the boat has an unbalanced cylinder steering system, you must configure the pump to work properly with the steering system.
Configuring the Pump for an Unbalanced Cylinder
Notice
Keep all parts clean and free of dust and debris while configuring the pump for an
If you remove the check valves after bleeding the hydraulic system, you must bleed it again.
1.Remove the check valves ➊ from the pump manifold.
2.Pull the pistons ➋ out of the pump manifold.
The pump is configured from the factory with the pistons in the balanced configuration ➌.
3.
4.Insert and tighten the check valves into the pump manifold.
➊
➌
➋
➍
2.1 L Hydraulic Pump Installation Instructions | 3 |