Gorman-Rupp Pumps 04B3-F4L 1316966 and up - Manual (Page 29)

OM-01216 0 SERIES
MAINTENANCE & REPAIR PAGE E - 9
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly
equipped shop by qualified personnel.
After separating the intermediate from the engine,
loosen the allen head setscrew (16) and unscrew
the bearing retainer nut (21) from the intermediate.
NOTE
There are no provisions for draining the grease
from the intermediate cavity. Place a drip pan under
the intermediate before removing the shaft and
bearing.
Place a block of wood against the impeller end of
the shaft (19) and tap the shaft, spacer (22) and
bearing (11) from the bearing bore.
After removing the shaft and bearing, clean and in­
spect the bearing in place as follows.
To prevent damage during removal from
the shaft, it is recommended that the bear­
ing be cleaned and inspected in place. It
is strongly recommended that the bearing
be replaced any time the shaft and bearing
are removed.
Clean the intermediate, shaft and all component
parts (except the bearing) 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 bearing thoroughly in fresh cleaning sol­
vent. Dry the bearing with filtered compressed air
and coat with light oil.
The bearing 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 bearing by hand to check for roughness
or binding and inspect the bearing balls. If rotation
is rough or the bearing balls are discolored, re­
place the bearing.
The bearing tolerances provide a tight press fit
onto the shaft and a snug slip fit into the intermedi­
ate. Replace the bearing, shaft, or intermediate if
the proper bearing fit is not achieved.
Remove the inboard bearing retaining ring (24)
and using an arbor (or hydraulic) press remove the
bearing (11) from the shaft. It is not necessary to
remove the outboard bearing retaining ring (23)
from the shaft unless replacement is required. Re­
move the bearing spacer (22).
Shaft and Bearing Reassembly and Installation
Clean and inspect the bearing as indicated in
Shaft and Bearing Removal and Disassembly.
To prevent damage during removal from
the shaft, it is recommended that the bear­
ing be cleaned and inspected in place. It
is strongly recommended that the bearing
be replaced any time the shaft and and
bearings are removed.
Inspect the shaft for distortion, nicks or scratches
or damage. Dress small nicks and burrs with a fine
file or emery cloth. Replace the shaft if defective.
Install the outboard bearing retaining ring (23) if it
was removed. Replace the bearing spacer (22).