SERVICE MANUAL | 3570 Series Plunger Pumps
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Servicing the Valves
2.06 Thread a 10 mm bolt into the top of the spring
retainers.
2.07 Use needle-nosed pliers to grasp under
the head of the bolt to pull the complete
valve assemblies loose from the manifold.
Lift up and
straight out.
2.05 Remove the spring washers from manifold.
VALVE REMOVAL
2.04 Remove the coil springs from manifold.
2.02 Using a pick, remove O-rings and backup
rings from valve plugs.
2.01 Use a 41 mm socket with ratchet to remove
the valve plugs from pump manifold.
2.03 Inspect valve plug O-rings and backup rings
for cuts, nicks or damage.
NOTES: Two (2) valve kits are required to repair the pump. Discharge and inlet valve assemblies are
identical (use procedure below for disassembly and reassembly of discharge and inlet valves).
NOTICE: If the spring retainer separates from
the seat, remove the spring and valve by hand.
Use reverse pliers to remove the valve seat with
a turning motion while pulling away from the
manifold to remove.