Magnum Venus Plastech PATRIOT 3-1_4 PAT-PH-3250 Series - Manual (Page 17)

PAT-PH-3250 Series Powerhead Manual
Rev. 05/2012 Page | 17
9. Remove the two cap screws (F-CS-1024-06-SS) from each of the two valve
exhausts (MPH-2522). Pull both of the valve exhausts from the valve blocks.
Remove the diaphragm (MPH-2529) from both valve blocks.
10. Remove each O-ring and replace with new. Coat every new O-ring with brown
grease (08465). Coat the diaphram bore and both valve piston bores with brown
grease (08465) before assembling. Use a wire brush to clean the valve rod
threads of any dry thread locking compound
.
NOTE: Avoid putting any scratches in the valve blocks. To remove the
diaphragm use a screwdriver and push the center riser on the diaphragm
to one side and slide out.