Gorman-Rupp Pumps 13A9-B 733170 and up - Manual (Page 29)

10 SERIES OM-00636
MAINTENANCE & REPAIR PAGE E - 6
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 (34) and drain the
bearing lubricant. Clean and reinstall the drain
plug.
Remove the slinger ring (18). Remove the pedestal
mounting hardware from the base. Tie and tag any
shims used under the mounting feet for leveling.
Using snap ring pliers, remove the bearing retain­
ing ring (25) from the pedestal bore. Remove the
bearing shim set (31); tie and tag the shims or
measure and record their thickness for ease of
reassembly.
Remove the setscrews (28) from the bearing re­
tainer (30) and install two machine screws
(#10-32 X 1-inch long, not supplied). Pry the re­
tainer from the pedestal bore using a pair of screw­
drivers against the heads of the machine screws.
Do not use the machine screws to jack against the
ball bearing. Remove the machine screws and re­
install the setscrews.
Press the oil seal (29) from the bearing retainer,
and remove the bearing retainer O‐ring (24).
Place a block of wood against the impeller end of
the shaft (30) and tap the shaft and assembled
bearings (19 and 23) from the pedestal. Be careful
not to damage the shaft.
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 pedestal, shaft and all component parts
(except the bearings) with a soft cloth soaked in
cleaning solvent. Inspect the parts for wear or dam­
age 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
races and cause premature bearing fail­
ure.
Rotate the bearings by hand to check for rough­
ness or binding and inspect the bearing balls. If ro­
tation is rough or the bearing balls are discolored,
replace the bearings.
The bearing tolerances provide a tight press fit
onto the shaft and a snug slip fit into the pedestal.
Replace the bearings, shaft, or pedestal if the
proper bearing fit is not achieved.
If bearing replacement is required, use a bearing
puller or an arbor (or hydraulic) press to remove
the bearings from the shaft.
Press the inboard oil seal (35) from the pedestal
bore.
Shaft and Bearing Reassembly and Installa­
tion
Clean and inspect the bearings as indicated in
Shaft and Bearing Removal and Disassembly.