SERVICE MANUAL | 25 Frame Plunger Pumps
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PLUNGER REMOVAL
1.22 Seal retainer can be separated to remove and
inspect the wicks. Replace as needed (wicks
not included in the seal kit).
1.25 Remove the plunger retainer from the
plunger and inspect the O-ring and backup
ring for damage.
1.20 Remove seal retainers from crankcase
housing.
1.23 Using a 14 mm combination wrench, loosen
the plunger retainer.
1.21 Remove low-pressure seal washer.
1.24 Before completely removing the plunger
retainer, stop and push the plunger towards
the drive end to break loose from the retainer.
Remove the plunger and retainer.
Servicing the Seals
1.28 Use a pick to remove keyhole washer and
barrier slinger located behind the plunger.
Inspect for damage.
1.26 Using a pick, remove the plunger retainer
O-ring from plunger retainer.
1.27 Inspect ceramic plunger for cracks and
scoring to the surface. Clean with a wire-
wheel brush if necessary.