Gorman-Rupp Pumps U6A60S-B 1289665 and up - Manual (Page 31)

OM-05668 SUPER U SERIES
MAINTENANCE & REPAIR PAGE E - 8
ADD PIPE
AS REQUIRED
Figure 4. Rotating Assembly Removal
Remove the seal plate and bearing housing O‐
rings (25 and 27).
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 (8); 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 (4 and
5) and separate the seal plate (2) and gasket (3)
from the bearing housing (6). 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.
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 (26) and
drain the lubricant. Clean and reinstall the drain
plug.
Disengage the hardware (15 and 16) and slide the
bearing cap (17) and oil seal (18) off the shaft. Re­
move the bearing cap O‐ring (14), and press the oil
seal from the bearing cap.
Place a block of wood against the impeller end of
the shaft and tap the shaft (23) and assembled
bearings (10 and 25) from the bearing housing.