Gorman-Rupp Pumps 3D-B 883512 and up - Manual (Page 28)

D SERIES OM−01490
MAINTENANCE & REPAIR PAGE E − 12
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.
Inspect the sleeve (27) and replace as necessary.
If bearing and sleeve replacement is required, re-
move the snap ring (24). Using a bearing puller, re-
move the outboard bearing (25) from the drive pin-
ion. Remove the sleeve and pull the inboard bear-
ing (25A) from the shaft. Remove the washer (28)
from the shaft.
Inspect the pinion bushing (18) for excessive wear.
If replacement is required, use a screwdriver or
other tool to pry the bushing from the bearing
housing.
Slide the pinion shaft (31) and gear (15) out of the
pinion bearing (32). Remove the spacer washer
(30).
Inspect the pinion shaft and gear for wear or bro-
ken teeth. If replacement is required, use an harbor
(or hydraulic) press to remove the shaft from the
gear.
Use an arbor (or hydraulic) press to remove the
pinion bearing from the gear housing.
NOTE
It is not necessary to remove the drive shaft (35),
drive gear (11), shaft bearings (4 and 4A) or eccen-
tric cam (33) unless wear or damage is obvious. In-
spect the parts, and if replacement is necessary,
proceed as follows.
Remove the snap ring (37) from the drive shaft. Us-
ing a bearing puller, remove the eccentric cam and
key (36) from the drive shaft. Remove the eccentric
cam shim set (34) and washer (38). Tie and tag the
shims or measure and record their thickness for
ease of reassembly.
Slide the drive shaft and gear out of the gear hous-
ing. Slide the spacer washer (5) off the drive shaft.
Remove the snap ring (13). Use an arbor (or hy-
draulic) press to remove the gear (11) and key (12)
from the shaft.
To remove the drive shaft bearings (4 and 4A), the
spacer sleeve (2) must be coiled into a smaller di-
ameter to allow passage through the I.D. of the
bearings.
NOTE
After the spacer sleeve in compressed, it will be