OM-06669
SUPER T SERIES
MAINTENANCE & REPAIR
PAGE E - 8
pump casing. Retain the rotating assembly shims
(33).
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 (11, Fig
ure 2) from the bearing housing, and screw the lon
gest length of pipe into the vent hole until fully en
gaged. 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
sembly.
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 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 (8 and
9) and separate the seal plate (5) and gasket (6)
from the bearing housing (10). 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 (4).
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
assembly. Disassemble the shaft and bearings
only
when there is evidence of wear or damage.
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly‐
equipped shop by qualified personnel.
Remove the bearing housing drain plug (16A) and
drain the lubricant. Clean and reinstall the drain
plug.
Disengage the hardware (17 and 18) and slide the
bearing cap (19) and oil seal (7) off the shaft. Re
move the bearing cap gasket (20), and press the oil
seal from the bearing cap.
Place a block of wood against the impeller end of
the shaft (24) and tap the shaft and assembled
bearings (22 and 25) from the bearing housing.
