Pentair Plunger Pump 2351B-P

IMPORTANT: Hypro PowerLine Plus pumps are filled with Hypro Oil.

Change oil after 40 hours of break-in operation.

Change oil every three months or 500 hours, whichever comes first.

Check the oil level using the dipstick.

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

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

Remove the plungers and slinger rings

Check the oil level using the dipstick

Use Hypro Oil (P/N 2160-0038) for lubrication

Enter the crankcase capacity for PowerLine Plus 2200B-P pumps

Change oil after 500 hours of operation

Was the oil changed successfully?

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.

Plunger Inspection and Replacement

Inspect the plungers for cracking or damage.

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 by reversing the disassembly steps

Torque the valve cap to 60 ft. lbs. for 2200B-P and 2300B-P series