Gorman-Rupp Pumps T10A65S-B /FM - Manual (Page 30)

OM-05522 SUPER T SERIES
MAINTENANCE & REPAIR PAGE E - 8
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 (30). Tie and
tag the shims or measure and record their thick­
ness for ease of reassembly.
Seal Removal And Disassembly
(Figure E‐2)
Remove the seal spring. Apply oil to the shaft and
work it up under the bellows. Slide the rotating por­
tion of the seal off the shaft as a unit.
Use two stiff wires with hooked ends to remove the
stationary portion of the seal.
An alternate method of removing the stationary
portion of the seal is to remove the hardware (6 and
7) and separate the seal end plate (3) and gasket
(4) from the bearing housing (9). Remove the seal
end plate O‐ring (31) and bearing housing O‐rings
(5 and 32).
Position the seal end 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 sta­
tionary seat until the seat, O‐rings, and stationary
element can be removed.
If no further disassembly is required, refer to Seal
Installation.
Shaft and Bearing Removal and Disassembly
(Figure E‐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.