Recent content by Robin Enderby

Firstly let me mention the change Moog is making to their model numbering system: In the past, the first letter of the part number showed the country of manufacture e.g. a DO772 (German Origin) JO772 (Japanese origin) EO772 (England) etc... They have now moved on to 'G' which stands for Global...

Star Hydraulucs here in the UK manufacture servo valves and can supply some parts for the Moog “631” series. It would take about 2 weeks to fully train someone how to properly repair servo valves, which would start with designing the test rig and auxiliaries they would need, stimulating numerous...

I know this is an old post but better late than never ! You won't need coils. Unlike directional solenoid valves the amount of power used by this type of servo is tiny - about 1/8 watt so the coils don't even get warm. You probably already know that if you try and push the spool out before...

Once the power is removed the integral electronics can't apply any signal to the proportional magnet. The only way I can imagine you can set the bias is: unplug the electrical connector, turn on the hydraulics, remove the big hex nut on the end, (there will be no leakage) slacken the tiny nut...