Garmin 010-11099-10 Manuale Utente

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 more-specific information about bleeding the 

system.
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. 

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, re-enable the Shadow Drive.

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 marine-rated corrosion 

blocker to the pump. 

If the boat has an unbalanced cylinder steering system, you must 

configure the pump to work properly with the steering system.

Keep all parts clean and free of dust and debris while configuring the 

pump for an unbalanced-cylinder steering system.
If you remove the check valves after bleeding the hydraulic system, you 

must bleed it again.
1.  Remove the check valves 

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 from the pump manifold.

2.  Pull the pistons 

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 out of the pump manifold. 

The pump is configured from the factory with the pistons in the 

balanced configuration 

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.

3.  Re-insert the pistons into the pump manifold in the unbalanced 

configuration 

➍

.

4.  Insert and tighten the check valves into the pump manifold.

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➋