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5477Y1 Sentinel Row Control Manual
©2022 SurePoint Ag Systems 57
4/29/2022
PumpRight Valves & Diaphragms
Number of
Diaphragms
PR17
3
PR30
3
PR40
4
D250
6
Diaphragm Pump Service Kit Replacement
Instructions for PR Pumps
Diaphragm & Valve Service Steps:
1.
Remove inlet and outlet plumbing connections by
unscrewing ring nut on inlet and outlet fitting.
2.
Use extreme caution when removing and replacing drain
plug, so that threads are not stripped and o
-
ring is not
damaged. Remove drain plug from bottom of pump to drain
oil from pump. Rotate pump shaft to remove all oil. Replace
drain plug making sure o
-
ring is in place. Tighten plug to 180
In.Lbs.
3.
Remove pump manifold(s) using a 13 mm wrench.
4.
Remove and replace complete valve assembly.
5.
Remove the pump head.
6.
Remove the diaphragm bolt, support washer and
diaphragm. Turn the pump shaft to up stroke to replace
diaphragm.
7.
Install new diaphragm (LIQUID side up), then replace
washer and bolt.
8.
Turn pump to downstroke to seat new diaphragm into the
sleeve groove.
9.
Replace pump head and manifold(s).
10.
Refill crankcase with SAE30 non detergent oil (PumpRight
Oil or hydraulic jack oil). Turn the pump shaft and top off
sight glass.
NOTE: See individual Part Breakout Charts for Bolt/Nut
Torque Specs.
H
Maintenance
Typical Manifold—
2
per pump—
inlet and outlet
Inlet/Outlet
Manifold
OutletValve
Gasket/O
-
ring
Pump Head
Inlet Valve
Typical Valve Assembly
Typical Diaphragm Assembly
Sleeve
BlueFlex
Wobble Plate/Diaphragm
Keeper Washer
Visit www.SurePointag.com or www.support.SurePointag.com
for
PumpRight Diaphragm Pump Repair and Maintenance Vid-
See Note Below
NOTE: A multipurpose grease is fine to use for applying in between the Diaphragm
and Wobble Plate/Washer
SurePoint
Ag
Systems