Gorman-Rupp Pumps VG6E3-B 1238969 and up - Manual (Page 26)

OM−02818 VG SERIES
MAINTENANCE & REPAIR PAGE E − 6
ly shorten bearing life. Do not spin dry
bearings. This may scratch the balls, roll-
ers or races and cause premature bearing
failure.
The roller bearing tolerances provide a tight press
fit onto the shaft and a snug slip fit into the bearing
housing. The ball bearing provides a tight press fit
into the bearing housing and snug slip onto the
shaft. Replace the bearings, shaft, or bearing
housing if the proper bearing fit is not achieved.
If required, use a bearing puller to remove the in-
board roller bearing from the shaft.
Shaft And Bearing Reassembly
And Installation
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.
Lubricate the shaft with light oil and press the roller
bearing (40) onto the shaft until seated squarely
against the shaft shoulder. Lubricate the bearing
housing bore with light oil and press the ball bear-
ing (24) into the housing bore until fully seated.
When installing the bearings onto the
shaft, never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.
Slide the shaft and assembled roller bearing into
the bearing housing
until the roller bearing is fully
seated in the bearing bore.
Replace the bearing spacer (32). Reinstall the
bearing snap ring (31) in the groove in the shaft.
Press the oil seals (28 and 41) in the bearing covers
(18 and 26) with the lips positioned as shown in
Figure 1. Install the gaskets (19 and 25), and se-
cure the bearing covers to the bearing housing
(20) with the capscrews (17 and 27). Be careful
not to damage the lip of the oil seals on the shaft
keyways and shaft threads.
Install the deflector (42) and shaft key (29).
If removed, secure the foot (35) to the bearing
housing with the hardware (33 and 34), and sup-
port the bearing housing with a wood block until
the pump is fully reassembled. Lubricate the bear-
ings as indicated in LUBRICATION.
Seal Reassembly and Installation
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent.
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.
The seal is not normally reused because wear pat-
terns on the finished faces cannot be realigned
during reassembly. This could result in premature
failure. If necessary to reuse an old seal in an emer-
gency, carefully wash all metallic parts in fresh
cleaning solvent and allow to dry thoroughly.
Handle the seal parts with extreme care to prevent
damage. Be careful not to contaminate precision
finished faces; even fingerprints on the faces can
shorten seal life. If necessary, clean the faces with a
non-oil based solvent and a clean, lint-free tissue.
Wipe lightly in a concentric pattern to avoid
scratching the faces.
Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak-
age. Clean and polish the shaft sleeve, or replace it
if there are nicks or cuts on either end. If any com-
ponents are worn, replace the complete seal;
never mix old and new seal parts.
If a replacement seal is being used, remove it from
the container and inspect the precision finished