Posted by sweinert on October 16, 2020 at 20:21:42 from (209.152.71.182):
The power steering on my 602 works well 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 taken the control valve apart, cleaned all parts, replaced all O-rings, and reassembled - 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 be part of the problem and does anyone have suggestions as to how to get it out? Also - the first picture shows a notch in the end of the control valve spool. Is that significant? (I couldn't find a reason or any particular reason to place the notch in any particular position.) Any information or assistance would be appreciated.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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