Raymarine ST5000+, Owner'S Handbook Manual

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ST5000 Plus Sterndrive & Hydraulic Autopilots Owner’s Handbook
D273-1
Z068 double pilot
check valve (
Raymarine
uniflow check valve)
Note:
Only required if a check
valve is not contained
in the helm pump.
Bleeding the system
Correct bleeding of the hydraulic system is one of the most important
steps when installing the hydraulic pump. The presence of air within
the hydraulic steering system will not only degrade the performance of
the autopilot but also affect the overall operation of the steering
system.
In addition to the manufacturers instructions for bleeding the steering
system, the following procedures should be carried out to bleed the
autopilot pump:
1. With the autopilot in Standby mode, press and hold down the
–10
key – the autopilot pump will try to drive the rudder over to port.
2. Counter this rudder movement by turning the helm to starboard to
keep the rudder stationary – any air in the pump will rise to the
helm pump and be exhausted into the reservoir.
3. Clear any air on the other side of the pump by pressing and
holding the
+10
key– the autopilot will now try to drive the rudder
to starboard.
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