Gorman-Rupp Pumps 610M20B-B 699260 and up - Manual (Page 24)

60 SERIES OM−01912
MAINTENANCE & REPAIR PAGE E − 6
Shaft and Bearing Removal and Disassembly
Remove the hardware securing the pedestal to the
base. Use a suitable hoist and sling to move the
pedestal assembly to a clean work area.
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.
Before disassembling the pedestal, remove the
pedestal drain plug (34) and drain the oil from the
pedestal. Clean and reinstall the pipe plug.
Disengage the hardware (26 and 27) and remove
the outboard bearing cap (25), gasket (33), shims
(31) and oil seal (28). Clean the mating surfaces.
Press the oil seal from the bearing cap.
Remove the slinger ring (19). Disengage the hard-
ware (16 and 17) and remove the inboard bearing
cap (18), gasket (35) and oil seal (20). Clean the
mating surfaces. Press the oil seal from the bearing
cap.
Place a block of wood against the impeller end of
the shaft (29) and tap the shaft and assembled
bearings (21 and 24) out of the pedestal.
After removing the shaft and bearings, clean and
inspect the bearings in place as described in
Bearing Cleaning and Inspection.
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 to remove the inboard and outboard bear-
ings from the shaft.
Bearing Cleaning and Inspection
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
races and cause premature bearing fail-
ure.
Rotate the bearings by hand to check for rough-
ness or binding. Inspect the bearing balls (or roll-
ers) on open-type bearings. If rotation is rough or
the balls or rollers are discolored, replace the bear-
ings.
Shaft and Bearing Reassembly and Installation
Inspect the shaft for distortion, nicks or scratches,
or damaged keyways. Dress small nicks and burrs
with a fine file or emery cloth. Replace the shaft if
defective.
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is