GCV/SRV valves, (type: both valves are in the same valve body) of our gas turbines SPEEDTRONIC MARK II.

Please i need urgently proceed for the preventive maintenance and then calibration STEP by STEP ?

Best Regards

 

Try this link:

http://www.control.com/thread/1296479865#1296505828

and this one:

http://control.com/thread/1294809227#1295331639

They should explain how to put the valves at the true zero stroke positions. They are for the Frame 5/6B style of combined GCV/SRV.

Speedtronic Mark II, huh? You should have an excellent procedure in the Control Specification, System Adjustments, document.