Single, Double, T riple and Thru-drive Pumps Overhaul Service Manual V-PUVN-TS001-E October 2002
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Section VI —
Overhaul (cont.)
E. Assembly
Basic pump: Clamp the body
in a vise or place on 2 x 4
wood blocks to facilitate
assembly. See figures 10
and 11.
1. Lubricate primar y shaft seal
with petroleum jelly and place
in position within the body,
garter spring up. See Figure 6
for seal arrangements.
2. Press the seal into the body
until it bottoms out.
NO TE:
Two shaft seal arrangements
are available in the VMQ pump
series. See Figure 6 and Table
1 – 3. If the pump model
code (Table 1 –3) indicates that
a secondary seal is required,
perform the following step.
3. Lubricate secondar y seal
with petroleum jelly and place
the seal in position opposite of
the seal previously installed in
the body (Figure 6). Use a
small hardwood block to
drive the seal into the body.
Installation is complete when
the seal face is flush with the
front of the body. Do not drive
the seal past flush as it can
block the body drain opening.
NO TE:
If shaf t bearing was defective,
install a new bearing as
follows:
4. Press shaft into the new
bearing with an arbor press
while supporting the bearing
inner race. Install a small snap
ring behind the bearing.
5. Use a “ bullet” or plastic
tape over the end to prevent
damage to the seal(s).
Lubricate the “ bullet” with
petroleum jelly and carefully
push the shaft through the
seal(s) until the bearing is
within the body. Install the
large spiralox ring into the body
snap ring groove behind the
bearing.
6. Inst all the O-rings and back-
up ring on the cartridge outlet
support plate hub.
7. Chec k the rotor for bind by
inserting your index finger
through the shaft opening of
inlet support plate. Hold the
cartridge kit in a horizontal
shaft position and lift the rotor
with your finger. The rotor
should move freely back and
forth within the cartridge. If the
rotor binds, open the kit, clean
and stone all possible areas of
bind, then reassemble using
the aforementioned procedure.
The rotor must move freely
within the cartridge when
assembled.
8. Carefully inst all the cartridge
into the body so the torque pin
in the cartridge kit lines up with
the hole in the cover housing.
The kit should al ways be
oriented so the inlet windows
of the kit line up with the inlet
port of the housing.
NO TE :
VMQ Cartridge kits are
manufactured with shaft
bushings located in the inlet
plate or outlet plate depending
on the configuration of the
pump. See Table 8 for
application details.
9. Lubricate and inst all the
housing O-rings.
10. Inst all the cover housing in
position; move back and forth
until the cartridge pin drops
into the cover hole.
11. Oil and inst all the housing
bolts. Torque to the value noted
in Figure 9.
12. Turn the pump shaft by
hand to verify freedom of
the cartridge.
Figure 17
Figure 18
Figure 19
Figure 20
Summary of Contents for Vickers VMQ125S
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