Gorman-Rupp Pumps 03H3-GL 320347 and up - Manual (Page 31)

OM−01200 0 SERIES
MAINTENANCE & REPAIR PAGE E − 11
er plate gasket (8) and bearing adjusting shims (13
and 17). Tie and tag the shims, or measure and re-
cord their thickness for ease of reassembly. In-
spect the oil seal (12) and, if replacement is re-
quired, press it form the cover plate.
Slide the drive shaft (14), bearings (18 and 18A),
helical gear (21), pinion shaft (2) and bearings (7
and 7A) out of the seal plate side of the gear hous-
ing. It is not necessary to remove the dowel pins
(31) unless they are bent or damaged. If replace-
ment is required, remove them from the gear hous-
ing.
After removing the shafts 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 gear housing, seal plate, 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 greatly
shorten bearing life. Do not spin dry bear-
ings. This may scratch the balls or races
and cause premature bearing failure.
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 shafts and a snug slip fit into the gear
housing and seal plate. Replace the bearings,
shafts, gear housing, or seal plate if the proper
bearing fit is not achieved.
If the bearings, pinion shaft, or helical drive gear re-
quire replacement, use a suitable puller to remove
the bearings from the shafts. Slide the spacer (22)
and drive gear off the drive shaft. Retain the wood-
ruff key (16).
GEARBOX REASSEMBLY
Clean and inspect the bearings as indicated in
GEARBOX 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 and
bearings are removed.
Inspect the helical gear (21) and pinion shaft (2) for
excessive wear or broken teeth and replace as re-
quired.
Install the woodruff key (16) in the shaft keyway,
and slide the helical gear onto the shaft. Position
the spacer (22) against the inboard side of the heli-
cal gear.
The bearings (7, 7A, 18 and 18A) may be heated to
ease installation. An induction heater, hot oil bath,
electric oven, or hot plate may be used to heat the
bearings. Bearings 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