Gorman-Rupp Pumps T8A71S-B /F,/FM - Manual (Page 32)

OM-05352 SUPER T SERIES
MAINTENANCE & REPAIR PAGE E - 9
Remove the bearing housing drain plug (28A) and
drain the lubricant. Clean and reinstall the drain
plug.
Disengage the hardware (13 and 14) and slide the
bearing cap (15) and oil seal (12) off the shaft. Re­
move the bearing cap O‐ring (19), and press the oil
seal from the bearing cap.
Place a block of wood against the impeller end of
the shaft and tap the shaft (17) and assembled
bearings (8 and 20) from the bearing housing.
Pry or press the oil seals (21 and 22) from the bear­
ing housing.
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 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 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 bearing
housing if the proper bearing fit is not achieved.
If bearing replacement is required, remove the out­
board bearing snap ring (18), and use a bearing
puller to remove the bearings from the shaft.
Shaft and Bearing Reassembly and Installation
(Figure 2)
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 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 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 seals (21 and 22) in the
bearing housing bore with the lip positioned as
shown in Figure 2. Press the oil seal into the hous­