Gorman-Rupp Pumps 86A52-B 1329204 and up - Manual (Page 27)

OM−00941 80 SERIES
MAINTENANCE & REPAIR PAGE E − 6
If no further disassembly is required, see Seal
Reassembly and Installation.
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 (35) and drain the
pedestal. Clean and reinstall the plug.
Remove the slinger ring (38) from the shaft. Re-
move the pedestal mounting hardware from the
base. Tie and tag any shims used under the
mounting feet for leveling.
Use snap ring pliers to remove the bearing retain-
ing ring (24) 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 machine screws and lockwashers (29
and 30) from the bearing retainer (25) and install
two machine screws (#10−32 x 1−inch long, not
supplied). Pry the retainer from the pedestal bore
using a pair of screwdrivers against the heads of
the machine screws. Do not use the machine
screws to jack against the ball bearing. Remove
the machine screws and reinstall the machine
screws and lockwashers (29 and 30).
Press the oil seal (26) out of the bearing retainer,
and remove the O-ring (32) from the pedestal bore.
Remove the hardware (16 and 17) and slide the as-
sembled bearing cap (36) and oil seal (37) off the
shaft as a unit. Use a suitably sized dowel to press
the oil seal out of the bearing cap. Remove the O-
ring (18) from the groove in the bearing cap.
Place a block of wood against the drive end of the
shaft and tap the shaft and assembled bearings
(19 and 23) out of the pedestal.
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.
Inspect the shaft for distortion, nicks or scratches,
or thread damage on the impeller end. Dress small
nicks and burrs with a fine file or emery cloth. Re-
place the shaft if defective.
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-