Rotary Valve Seal Replacement M110
Rotary valve seals and energizing O-ring replacement is not necessary unless the seals are cut or damaged.
Replacement of these seals should not be attempted without a seal compression ring tool. Insure that your work
area is clean and free of dirt and debris to prevent damage or contamination to the rotary valve seals.
Remove the rotary valve seals and energizing
O-rings (Figure 113).
Inspect the rotary valve grooves to insure
they are clean and free of nicks or burrs
Install the 3 energizer O-rings into the rotary
valve grooves (Figure 115).
These energizer O-rings will stretch over the
rotary valve. Care should be used to insure
the rings do not twist in the cavity.