OM-05350
SUPER T SERIES
MAINTENANCE & REPAIR
PAGE E - 8
Turn
Counterclockwise
Lathe Dog Arm
“V” Notch
Shaft Key
Impeller Shaft
Lathe Dog
Setscrew
Heavy
Bar Stock
Figure 3. Loosening Impeller
(Figure 1)
Remove the hardware (9 and 10) securing the ro
tating assembly to the pump casing. Separate the
rotating assembly by pulling straight away from the
pump casing. Tie and tag the rotating assembly
shims (11) for ease of reassembly.
NOTE
An optional disassembly tool is available from the
factory. If the tool is used, follow the instructions
packed with it. A similar tool may be assembled us
ing 1/2‐inch pipe (schedule 80 steel or malleable
iron) and a standard tee (see Figure 4). All threads
are 1/2‐inch NPT.
Do not pre‐assemble the tool.
TEE
APPROX. 6 IN.
(152 MM) LONG
APPROX. 14 IN.
(356 MM) LONG
Figure 4. Rotating Assembly Tool
To install the tool, remove the vented plug (10, Fig
ure 2) from the bearing housing, and screw the
longest length of pipe into the vent hole until fully
engaged. Install the tee, and screw the handles into
the tee. Use caution when lifting the rotating assem
bly to avoid injury to personnel or damage to the as
sem
bly.
Remove the bearing housing O‐ring (9).
Impeller Removal
(Figure 2)
With the rotating assembly removed from the
pump casing, unscrew the impeller from the shaft.
Use caution when unscrewing the impeller; ten
sion on the shaft seal spring will be released as the
impeller is removed. Inspect the impeller and re
place if cracked or badly worn.
Remove the impeller adjusting shims (3); tie and
tag the shims, or measure and record their thick
ness for ease of reassembly.
Seal Removal
(Figure 2)
Slide the integral shaft sleeve and rotating portion
of the seal off the shaft as a unit.
Use a pair of stiff wires with hooked ends to remove
the stationary element and seat.
An alternate method of removing the stationary
seal components is to remove the hardware (19
and 20) and separate the seal plate (3) and gasket
(4) from the bearing housing (7). Position the seal
plate on a flat surface with the impeller side down.
Use a wooden dowel or other suitable tool to press
on the back side of the stationary seat until the
seat, O‐rings, and stationary element can be re
moved.
Remove the shaft sleeve O‐ring (26).
If no further disassembly is required, refer to
Seal
Installation
.
Shaft and Bearing Removal and Disassembly
(Figure 2)
When the pump is properly operated and main
tained, the bearing housing should not require dis
