Gorman-Rupp Pumps 16C20-F5L 1338868 and up - Manual (Page 31)

10 SERIES OM−02616
MAINTENANCE & REPAIR PAGE E − 10
Shaft and Bearing Removal and Disassembly
(Figure 2)
When the pump is properly operated and main-
tained, the intermediate should not require disas-
sembly. 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-e-
quipped shop by qualified personnel.
Remove the intermediate drain plug (51) and drain
the lubricant. Clean and reinstall the drain plug.
Disengage the hardware (43 and 44) and remove
the bearing cap (45), gasket (42), outboard oil seal
(48), and wavy washer (49). Press the oil seal from
the bearing cap.
Place a block of wood against the impeller end of
the shaft (47), and tap the shaft and assembled
bearings (50 and 52) from the intermediate. Press
the inboard oil seal (56) from the intermediate.
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 intermediate, shaft and all component
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 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 bearing
housing. Replace the bearings, shaft, or intermedi-
ate 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 (50 and 52) from the shaft.
Shaft and Bearing Reassembly and Installation
(Figure 2)
Inspect the shaft for distortion, nicks or scratches,
or for thread damage on the impeller end. Dress
small nicks and burrs with a fine file or emery cloth.
Replace the shaft if defective.
Position the inboard oil seal (56) in the intermediate
housing bore with the lip positioned as shown in
Figure 2. Press the oil seal into the housing until the
face is just flush with the machined surface on the
housing.