Gorman-Rupp Pumps T10A3S-B /FM,/WW - Manual (Page 29)

OM-05290 SUPER T SERIES
MAINTENANCE & REPAIR PAGE E - 8
E‐3 for removal tool use). If the removal tool is not
used, install three of the inner capscrews in the
jacking holes in the casing ring, and use them to
press the rotating assembly into the pump casing
until the bearing housing is free.
Remove the jacking screws from the casing ring.
Remove the outer hardware (23 and 24) and shim
sets (21). Separate the casing ring from the pump
casing. Tie and tag the shim sets for ease of reas­
sembly.
After the rotating assembly is loosened, screw a
5/8‐11 UNC X 16 inch long threaded rod into the
hole in the impeller shaft. Support the drive end of
the shaft with a 1‐13/16” (46 mm) minimum I.D.
piece of pipe or a set of handles as shown in Figure
E‐4, and slide the complete rotating assembly
through the suction head opening. Once free, use
a suitable hoist and sling and attach it to the lifting
eye provided at the top of the bearing housing to
move the rotating assembly to a suitable work area
for further disassembly.
ADD PIPE
AS REQUIRED
Figure E‐4. Rotating Assembly Removal With Tool
Impeller Removal
(Figure E‐2)
Unscrew the impeller from the shaft in a counter­
clockwise direction (when facing the impeller). Use
caution when unscrewing the impeller; tension on
the shaft seal spring will be released as the impeller
is removed.
Remove the impeller adjusting shims (34). Tie and
tag the shims or measure and record their thick­
ness for ease of reassembly.
Seal Removal And Disassembly
(Figure E‐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
portion of the seal is to remove the hardware (6 and
7) and separate the seal plate (3) and gasket (4)
from the bearing housing (9). Remove the seal
plate O‐ring (37) and bearing housing O‐rings (5
and 38).
Position the seal plate on a flat surface with the im­
peller side down. Use a wooden dowel or other
suitable tool to press on the back side of the sta­
tionary seat until the seat, O‐rings, and stationary
element can be removed.
Inspect the wear plate assembly (26) for excessive
wear or scoring. If replacement is required, remove
the hardware (24 and 25) securing it to the seal
plate.
If no further disassembly is required, refer to Seal
Installation.