Pentair Plunger Pump 2221A-P

Time how long it takes to fill a one or five-gallon container with water

Does the water supply exceed the required flow rate?

Is the suction line as large as or larger than the inlet port?

Are high-capacity, clean line strainers used?

Check the vacuum at the suction side

Is the pump protected from direct sunlight and overheating?

Oil Seal Replacement for 2200B-P and 2300B-P Series

Ensure all required tools are available

Drain the oil from the crankcase using a 9/16" hex wrench

Remove the cylinder head and plunger retaining nuts with a 9/16" hex wrench

Remove the plungers and slinger rings

Inspect the plunger rods for nicks or scratches

Are the plunger rods free of nicks or scratches?

Remove the valve cap (Figure 9, Ref. 1)

Remove the valve assembly (Ref. 3) from the head using needle nose pliers

Remove the o-ring (Ref. 4) from below the valve assembly

Remove the o-ring (Ref. 2) from the valve cap

Reassemble the parts by reversing the disassembly steps

Select the model for torque specification

Remove the pump head from the crankcase as described in the packing replacement section.

Remove the plunger retaining nut.

Carefully slide the plunger off of the lower plunger.

Remove the o-ring from the lower plunger.

Remove the plunger retaining nut and slinger ring.

Inspect the plungers for cracking or damage.

Ensure the following tools are available

Replace the plunger seals if there is water leakage from the weephole

Use a 3/16" Allen wrench to remove the cylinder head bolts

Remove the head from the crankcase assembly

Rotate the shaft and remove the cup retainers from the plungers

Remove the cup retainer and the cup from the cylinder head