Gorman-Rupp Pumps 54J20-B 1410811 and up - Manual (Page 28)

50 SERIES OM-01342
MAINTENANCE & REPAIR PAGE E - 6
Remove the hardware (22 and 23) securing the
bearing cap (21) and remove the cap and gasket
(20). Press the oil seal (24) from the bearing cap.
Slide the pedestal foot (27) off the pedestal. Re­
move the bearing shim set (19). Tie and tag the
shims, or measure and record their thickness for
ease of reassembly.
Place a block of wood against the impeller end of
the shaft and tap the shaft and assembled bear­
ings (15 and 18) from the pedestal bore. Be care­
ful not to damage the shaft threads.
It is recommended that the oil seal (34) be replaced
whenever the shaft and bearings are removed.
Press the oil seal from the pedestal bore.
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 impeller shaft.
Shaft and Bearing Reassembly And Installation
Clean and inspect the bearings as indicated in
Shaft and Bearing Removal and Disassembly.
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 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.