Gorman-Rupp Pumps 86A2-F4L 1322538 and up - Manual (Page 30)

80 SERIES OM-00957
MAINTENANCE & REPAIR PAGE E - 10
from the intermediate cavity. Place a drip pan under
the intermediate before removing the shaft and
bearings.
Remove the outboard bearing cup (26) from the
bearing cone (27).
Place the intermediate on a level surface with the
drive side down, and press the bearing closure
(33) and inboard bearing cup (31) from the inter­
mediate 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 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 rollers or
races, and cause premature bearing fail­
ure.
Rotate the bearings by hand to check for rough­
ness or binding and inspect the bearing rollers. If
rotation is rough or the rollers are discolored, re­
place the bearings.
The bearing tolerances provide a tight press fit
onto the shaft and a snug slip fit into the bearing
housing. Replace the bearing cups or cones, the
shaft, or intermediate if the proper bearing fit is not
achieved.
If bearing replacement is required, use a bearing
puller to remove the inboard and outboard bearing
cones (27 and 32) 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.
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.
The bearings may be heated to ease installation.
An induction heater, hot oil bath, electric oven, or
hot plate may be used to heat the bearings. Bear­
ings should never be heated with a direct flame or
directly on a hot plate.
NOTE
If a hot oil bath is used to heat the bearings, both the
oil and the container must be absolutely clean. If
the oil has been previously used, it must be thor­
oughly filtered.