Gorman-Rupp Pumps PA12A60-B-6068H-ESP 1501367 and up - Manual (Page 44)

PA SERIES OM-06261
MAINTENANCE & REPAIR PAGE E - 24
screws (9) from the bushing (10). Screw one of the
setscrews into the hole on the circumference of the
bushing to separate the coupling and bushing.
When the parts separate, remove the bushing, and
slide the coupling off the shaft. Remove the key (5).
When properly operated and maintained, the out­
put shaft and bearings 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
equipped shop by qualified personnel.
To remove the shaft and bearings (3 and 12), use
snap ring pliers to remove the retaining ring (1).
Use a wood block to tap the shaft and bearings
from the bearing housing from the driven end.
After removing the shaft and bearings, clean and
inspect the bearings in place as described in
Bearing Cleaning And Inspection.
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 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 retaining rings (2) and use a bearing puller to
remove the inboard (3) and outboard (12) bearings
from the shaft.
It is not necessary to remove the inboard bearing
retaining rings unless replacement is required.
Use snap ring pliers to remove the retaining rings
as required.
Bearing Cleaning And Inspection
(Figure 7)
Clean the pedestal, bearing housing, shafts 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. Inspect the bearing balls (or roll­
ers) on open‐type bearings. If rotation is rough or
the balls or rollers are discolored, replace the bear­
ings.
Engine Drive Reassembly
(Figure 10)
Inspect the output shaft for distortion, nicks,
scratches, damaged keyways or galling on the
bearing seating surfaces. Dress small nicks and
burrs with a fine file or emery cloth. Replace the
shaft if defective.
If removed, install the inboard bearing retaining
rings (2) on the output shaft (4).
To prevent damage during removal from