Replacing the seals and O-ring 3-13
10. Insert the seal-wash assembly into the pump assembly and align the
screw hole in both assemblies.
11. Reassemble the pump head, seal-wash assembly, and support plates and
secure them with screws using the T27 TORX driver. Ensure that the
drain fitting and check valve housing line up.
Securing the support plates
12. If you are replacing the plunger assembly, proceed to Replacing the
plunger on page 3-16.
If you are not replacing the plunger assembly, proceed to Replacing an
inlet check valve cartridge on page 3-20.
13. After you have replaced the seal, attach the head support plate, and
then attach the seal-wash housing.
14. Use the T27 TORX driver to attach the two screws securing the pump
head assembly to the support plate. Tighten the two screws 1/8 of a turn
beyond finger-tight.
15. Wet both the seal cavity and the plunger before reinstalling the pump
head.
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