To repair the shuttle valve, remove both hex plugs, springs, washers, and spool from the manifold. These parts
are interchangeable and can be installed on either side of the manifold. The spool and manifold are a select fit
and must be replaced together. To install, slide the spool into the bore, place a washer on each end, then slide
both springs in place. Install the hex plugs and tighten (refer to Fig. 14).
To repair the charge relief valve, re- move the hex plug, spring and poppet. Remove the shims from the
counterbore of the hex plug. Do not alter these shims unless new parts are used, in which case the valve must
be re-shimmed to the proper setting. To reinstall, insert the poppet, spring, and plug, being certain the shims
are in place (refer to Fig. 15).
The valve manifold assembly can be removed from the motor and replaced in its entirety. The following
procedure shows removal of the entire manifold from the motor before performing further disassembly (refer to
Remove the six hex capscrews and lift the manifold off the motor end cap. The three ports are sealed with O-
rings and the two adjacent ports also have backup rings on top of the O-rings. These are rectangular in cross
section and slightly cupped on one side where they mate with the O-rings (refer to Fig. 17).