Posted for mquinns@aol.com:

 Christian,
   Attached below is a drawing showing the orientation of the spool valve. The
down side referred to in the e-mail below is to the right. You need to pull
out both end plug retainers and the poppet assemblies also. Then with a small
diameter punch inserted through the poppet seat from the left hand side (High
pressure) strike the punch with a small hammer. Not much contact is needed.
This will push the spool valve against the poppet seat on the right hand side
(Low Pressure) and cause it to come out. Continue to push the spool valve
until it comes out and note on which end of the spool the o-ring is installed.
THE O-RING SHOULD BE TOWARD THE LEFT END OF THE SPOOL VALVE. If it is not,
flip the spool valve over and reinsert it toward the high pressure side and
reassemble the manifold. Once you see it you will understand the above
instructions. Let me know if you have any questions. O-rings in my unit did
not need to be replaced.
 
 MARK QUINN
 DAYTONA BEACH, FLORIDA
 
[The drawing is already in the archives... please go to http://lancaironline.net/lists/lml/Message/28688.html?Language= to see the post that contains the photo.   <Marv>          ]