Originally Posted by billburr
What was your procedure for bleeding the system?
Every system is a bit different. Below are the steps for bleeding my system. Our mechanic installed a brilliant clear bleeding hose at the manifold in the rudder area that is long enough to reach through the hatch
to the upper (cockpit) helm, so when bleeding by turning the wheel
at the upper helm the fluid flows through the hose from the manifold at the rudder area back into the reservoir at the upper helm and any air bubbles can be clearly seen.
The first bleed will result in micro bubbles that need to settle overnight and bled a second time, at a minimum. I ended up having to bleed @4 times before the system was completely free of bubbles. The air trapped in the rams is the hardest to remove.
Grace Hydraulic Steering
1. Open compensation valve by rudder (big blue valve)
2. Fill reservoir (upper helm) while turning to Port/left (bleeds connection between upper and lower helm)
3. Close compensation valve
4. Open Port/SB bleed valves by rudder
5. Insert clear bleed hose into upper reservoir (route up through aft hatch)
6. Turn wheel
both ways multiple times
7. Repeat steps 1-6 at least one more time until no air (micro bubbles are OK and can be bled by sitting overnight and bleeding again)
(bleed first with compensation valve open, then bleed with compensation valve closed)