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Plunger Pumps
Operating Instructions and Parts Manual RK Series Pumps
First Choice When Quality Matters
NORTH
AMERICA
Figure 21
Figure 22
Figure 23
Figure 30
Figure 29
Figure 27
Figure 32
Figure 31
Figure 28
Figure 26
Figure 25
Figure 24
Service Pumps (continued)
(NOTE: This is done
to free the retainer
O-ring which is stuck
to the manifold) and
lift out. (See Figure
20 & 21)
5. With your fingers
pull the high pressure
seal and head ring
out of the head. (See
Figure 22)
6. The low-pressure seal
is located in the brass
seal retainer. Using
the mechanics
pick go in
between the
seal and retainer,
twist and pull, the
seal will come out
of the gland. (See
Figure 23 & 24)
7. Remove the seal
retainer O-ring with
the mechanics pick. (See
Figure 25)
Assembly:
1. Install the plastic
head ring into the
head (the flat side is
on the bottom). (See
Figure 26)
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
fingers (do not use
and tools you may
damage the seal).
Make sure the seal is
totally seated
against the head
ring. (See Figure
27 & 28)
3. Installing the
low-pressure seal.
You want the open
side of the seal to
be pointed toward
the water side of
the head (toward the
high-pressure seal) and
the flat side toward the
drive end of the pump.
Place the seal into the
gland at an angle, with
your finger push the
exposed side of the
seal towards the center
and work the seal (See
Figure 29, 30 & 31) into
position. After the seal
is in the gland you can
work it into it proper
position.
4. Install the retainer O-ring.
(See Figure 32)