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Operating Instructions and Parts Manual
Plunger Pumps
Servicing the Packings/Seals
and Inlet Valves
To access the water seals and inlet
valves for inspection or replacement,
you will first need to remove the head
of the pump.
Tools required 5mm hex socket,
ratchet, (2) long screwdrivers, channel
lock pliers, mechanics pick and torque
wrench.
Disassembly:
1. First remove the eight
5mm head bolts. (See
Figure 10)
2. Place the screwdrivers
as shown between the
head and crankcase
of the pump, lifting
one up and the other
down. The head
should start to lift
off of the plungers. (See
Figure 11)
3. When you remove the
head you may notice
that some of the water
seals have stayed on
the plungers and some
in the head. To remove
the seals from the plungers simple
turn the assemblies and pull off.
(See Figure 12)
4. If the seal assemblies
are in the head use
the channel lock
pliers to grab the
seal retainer on the
outside ring, twist the
retainer in either direction (this is
done to free the retainer O-ring
which is stuck to the manifold)
and lift out. (See Figure 13)
5. With your finger pull
out the white restop
ring. (See Figure 14)
6. With your finger pull
the high-pressure seal
and head ring out of
the head. (See Figure
15)
7. The low-pressure seal
is located in the brass seal
retainer. Using the
mechanics pick, go in
between the seal and
Figure 10
retainer and pull the
seal toward the center
and pull outwards. (See
Figure 16)
8. Remove the seal
retainer O-ring with
Figure 11
the mechanics pick.
(See Figure 17)
Assembly:
1. Install the plastic head
ring into the head
(the flat side is on the
Figure 12
bottom). (See Figure
18)
2. Install the high-pressure seal.
Place the seal so the open "V"
portion is toward the head ring.
You need to place the seal at an
angle and pull and push to work
the seal into position with your
Figure 13
en 7
RSV Series Pumps
When Quality Matters
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18