Gorman-Rupp Pumps T4A61S-B /F,/FM - Manual (Page 31)

OM-05267 SUPER T SERIES
MAINTENANCE & REPAIR PAGE E - 8
TEE
APPROX. 6 IN.
(152 MM) LONG
APPROX. 14 IN.
(356 MM) LONG
Figure 4. Rotating Assembly Tool
To install the tool, remove the air vent (8, Figure 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 assembly to
avoid injury to personnel or damage to the assem­
bly.
Remove the bearing housing and seal plate O‐
rings (8 and 12).
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 (30); tie and
tag the shims, or measure and record their thick­
ness for ease of reassembly.
Seal Removal
(Figure 2)
Remove the spring centering washer, seal washer
(29) and spring. Apply oil to the shaft and work it up
under the bellows. Use a pair of stiff wires with
hooked ends to remove the rotating portion of the
seal off the shaft.
Use a pair of stiff wires with hooked ends to remove
the stationary portion of the seal, or remove the
hardware (20 and 21) and separate the seal plate
(3) and gasket (4) from the bearing housing (7).
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 seal 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 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 (28) and
drain the lubricant. Clean and reinstall the drain
plug.
Disengage the hardware (14 and 15) and slide the
bearing cap (13) and oil seal (16) off the shaft. Re­
move the bearing cap gasket (12), 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 (18) and assembled
bearings (6 and 11) from the bearing housing.
Pry or press the oil seals (5 and 5A) from the bear­
ing housing.
After removing the shaft and bearings, clean and
inspect the bearings in place as follows.
To prevent damage during removal from
the shaft, it is recommended that bearings