SERVICE MANUAL | 25 Frame Plunger Pumps
15
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Servicing the Valves
VALVE REMOVAL
2.02 Using a small flat tip screwdriver, tap between
the notched corner of the valve plug and the
manifold to create a gap and pry upwards.
2.01 Use a 10 mm hex socket to remove the four (4)
HSH screws from the valve plug.
2.03 Remove the valve plug by hand.
2.04 Inspect valve plug O-ring and backup ring for
cuts, nicks or damage.
2.07 The valve seat O-ring may remain in
the manifold. Use a pick or small flat tip
screwdriver to remove O-ring.
2.05 Using a pick, remove O-ring and backup ring
from valve plug.
NOTICE:
Valve assembly can be disassembled
for inspection and servicing, then reassembled.
If replacing the complete valve kit assembly,
skip to Valve Installation 2.37.
2.06 Use a reverse pliers to grasp the center of the
valve spring retainer. Twist while pulling away
from manifold to remove valve assembly.
NOTE: One (1) valve kit is required to repair the pump (see data sheet PN 99DAT090).