Gorman-Rupp Pumps 03A52-B 1327255 and up - Manual (Page 24)

OM-01177 0 SERIES
MAINTENANCE & REPAIR PAGE E - 5
Impeller Removal
To remove the impeller (2), block impeller rotation
and disengage the hardware (37, 38 and 39). In­
stall 3/8-16 UNC by 4‐inch long capscrews in the
tapped holes in the impeller. Use the capscrews
and a suitable puller to remove the impeller from
the shaft. Use caution when removing the impeller;
tension on the seal spring will be released as the
impeller is removed. Retain the impeller key (50).
Remove the impeller adjusting shims (9). Tie and
tag the shims or measure and record their thick­
ness for ease of reassembly.
Seal Removal and Disassembly
(Figures 1 and 2)
Remove the seal spring. Slide the shaft sleeve (13)
and rotating portion of the seal off the shaft as a
unit.
Apply oil to the sleeve and work it up under the rub­
ber bellows. Slide the rotating portion of the seal off
the shaft sleeve.
Remove the hardware (11 and 12) and slide the
seal plate and stationary element off the impeller
shaft as a unit. Press the stationary seal element
and O‐ring out of the seal plate from the back side.
Shaft And Bearing Removal And Disassembly
When the pump is properly operated and main­
tained, the pedestal should not require disassem­
bly. 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 pedestal drain plug (27) and drain the
lubricant. Clean and reinstall the drain plug.
Remove the slinger ring (14). Disengage the hard­
ware (32 and 33) and slide the assembled bearing
cap (31) and oil seal (15) off the shaft. Press the oil
seal from the bearing cap.
Disengage the hardware (24 and 25) and slide the
assembled bearing cap (19) and oil seal (22) off the
shaft. Tie and tag bearing gasket/shim set (26) for
ease of reassembly. Press the oil seal from the
bearing cap.
Place a block of wood against the impeller end of
the shaft and tap the shaft (21) and assembled
bearings (18 and 30) from the bearing 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
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and bear­
ings are removed.
Clean the bearing housing, shaft and all compo­
nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage and replace as necessary.
Most cleaning solvents are toxic and
flammable. Use them only in a well ven­
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain­
ers.
Clean the bearings thoroughly in fresh cleaning
solvent. Dry the bearings with filtered compressed
air and coat with light oil.
Bearings must be kept free of all dirt and
foreign material. Failure to do so will great­
ly shorten bearing life. Do not spin dry
bearings. This may scratch the balls or