
OM-06012
ULTRA V SERIES
MAINTENANCE & REPAIR
PAGE E - 11
NOTE
When appropriate recycling facilities are available,
the user should recycle components and fluids
when doing any routine maintenance / repairs and
also at the end of the pump’s useful life. All other
components and fluids shall be disposed of ac
cording to all applicable codes and regulations.
Do not install a suction check valve in
the first stage of the VS Series pump
model. Installing a suction check valve
in the first stage of the VS Series pump
model can cause over‐pressurization of
the first stage pump casing, resulting in
possible explosion of the pump and se
rious injury or death to personnel.
NOTE
The back cover and rotating assemblies are identi
cal for both the first stage pump and the Ultra Mate
second stage, therefore the service instructions are
the same. Because of these similarities, most of the
following instructions reference the first stage
pump model drawing (Figure 2). Instructions spe
cific to the Ultra Mate second stage will reference
Figures 1 and/or 3 and will denote “Ultra Mate Sec
ond Stage Only”.
Support Plate Removal
(Figure 1)
Disassembly of the either the first or second stage
pump model requires removal of the support plate
(3). Disengage the hardware (2) and remove the
plate.
Back Cover And Wear Plate Removal
(Figure 2)
The wear plate (5) is easily accessible and may be
serviced by removing the back cover assembly
(10). Before attempting to service the pump, re
move the pump casing drain plug (4) and drain the
pump. Clean and reinstall the drain plug.
Remove the back cover nuts (15) and pry the back
cover and assembled wear plate from the pump
casing (1).
NOTE
An alternate method of removing the back cover
from the pump casing is to remove the back cover
nuts (15) and two diagonally opposing locking col
lars (11). Install two 1/2-13 UNC x 2 inch long
screws in the tapped holes in the back cover and
use them to press the back cover out of the pump
casing.
Inspect the wear plate, and replace it if badly
scored or worn. To remove the wear plate, disen
gage the hardware (7 and 8).
Inspect the back cover O‐rings (6 and 9) and re
place it if damaged or worn.
Rotating Assembly Removal
(Figure 4)
The rotating assembly may be serviced without
disconnecting the suction or discharge piping;
however, the power source must be removed to
provide clearance.
The impeller (1) should be loosened while the rotat
ing assembly is still secured to the pump casing.
Before loosening the impeller, remove the seal cav
ity drain plug and drain the seal lubricant. This will
prevent the oil in the seal cavity from escaping
when the impeller is loosened. Clean and reinstall
the seal cavity drain plug.
Immobilize the impeller by wedging a block wood
between the vanes and the pump casing. Remove
the impeller capscrew and washer (26 and 27).