The power steering on my 602 works to the right but not to the left. According to the repair manual, this can be caused by a sticking control valve spool. I have disassembled the control valve, cleaned all the parts, replace all the o-rings, and reassembled it - no change. I could not figure out how to remove the relief valve - I assume it is the gray circle on the 2nd picture. Could this figure in to the problem and if so does anyone have a suggestion how to remove it? Also, the first picture shows a notch in the end of the control valve spool. I couldn't figure out its significance - Does the notch have a purpose and does it need to be positioned in a particular way for the valve to function? Any suggestions and information would be greatly appreciated - (I hope to not always have to turn to the right.)
