Originally Posted by Deanj
I recall servicing the control valve as an easier task than a remove and install procedure. The guts can come out while on the car (take photos of the order of the parts). Pulling the pitman arm is a bugger, and so go the obvious route first.
Dean is correct. You can remove the spool part from the rest of the valve and put in new seals without removing the entire control valve from the pitman arm.