3. Replace Shaft Seal
NOTE: Inspect the shaft seal (54) before continuing. If it looks damaged in any way, replace it.
a.Press the back bearing (55) and seal (54) out of the cover (52). Discard the seal.
b.Apply a coating of Loctite
c.Press the new seal into the back cover.
d.Inspect the bearing (55). If pitted or damaged, replace it.
e.Apply a coating of Loctite Rc/609 Retaining Compound or comparable product to the outer surface of the bearing. Press the bearing into the back cover until it rests on the shoulder. The shield on the bearing must face away from the back cover.
4.Reassemble Housing and Back Cover
a.Stand the pump on end.
b.With the pistons and connecting rods in place, reinstall the crankshaft by threading it through the connecting rods.
c.Reinstall the back cover, cover
5.Reinstall Diaphragms
a.Screw the plunger guide lifter (from the Wanner Tool Kit or Repair Kit) into the valve plunger (24). Pull out to expose the cross holes in the plunger. Rotate the shaft until the piston is at top dead center.
b.Insert the plunger holder tool (from the Wanner Tool Kit), through the plunger hole — to hold the plunger away from the diaphragm plate (18), and to keep the plunger from turning when the diaphragm is being installed.
c.Engage the diaphragm insert threads to the plunger threads, and turn the diaphragm by hand until the insert hits the shoulder of the valve plunger (24).
d.Hold the plunger holder tool to secure the valve plunger, and torque the diaphragm insert to 10
e.Repeat the above procedure for the plungers and diaphragms of the other two cylinders.
f.Fill the reservoir with fresh oil and prime the pump, as outlined in the
6.Reassemble Pump
Reassemble the pump as outlined in the
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