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A spring device which maintains the spool of a directional control valve in position.
Yes, that is where the recoil spring goes, push down on the detent and shove the spring into the tube
A valve spring "keeper" or AKA a valve spring "retainer" is used to lock a valve spring to the valve.
Valve pocketing is when a valve is hammering the valve seat.mostly due to miss adjusted valve spring/wrong valve spring/to strong of a valve spring or valve stem to short.Makes the valve seat deeper.
how many positions does a spring offset valve have
you need to compress the spring with a valve spring compressor tool, and then remove the valve keepers, and retainer.
The valve spring is the spring that closes the valve in the engine head after the cam lobe or rocker opens it . If the valve didn't close, many things would happen , the main one being the motor would not fire .
Find a good gunsmith or buy a book on Model 12 repair.
The purpose of the valve spring is to maintain contact between the components in the valve train, so the valve motion will follow the cam profile.
Your engine will probably missfire and you will not have compression in the cylinder that has the broken valve spring because your valve will stay open.
Spring loaded safety valve.
You have to drop the transmission pan and then drop the valve body. Make sure you remember or have the manual to know what bolts go where when you drop the valve body. Then you push in the detent valve in the middle of the solenoids and the keeper for the valve will come out and the valve will come out also.