Gorman-Rupp Pumps VG2D3-B 1191621 and up - Manual (Page 25)

OM--02811 VG SERIES
MAINTENANCE & REPAIR PAGE E -- 6
housing. Replace the bearings, shaft, or bearing
housing if the proper bearing fit is not achieved.
Use a bearing puller to remove the inboard and
outboard bearings from the shaft.
It is not necessary to remove the bearing snap
rings (22 and 36) from the shaft unless replace-
ment is required. If replacement is required, use
snap ring pliers to remove the snap rings from the
impeller shaft.
Shaft And Bearing Reassembly
And Installation
If removed, reinstall the bearing snap rings (22 and
36) in the grooves in the shaft.
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.
The bearings may be heated to ease installation.
An induction heater, hot oil bath, electric oven, or
hot plate may be used to heat the bearings. Bear-
ings 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
oil and the container must be
absolutely clean. If
the oil has been previously used, it must be thor-
oughly filtered.
Heat the bearings to a uniform temperature no
higher than 250_F (120_C), and slide the bearings
onto the shaft, one at a time, until they are fully
seated against the snap rings. This should be done
quickly, in one continuous motion, to prevent the
bearings from cooling and sticking on the shaft.
Use caution when handling hot bear-
ings to prevent burns.
After the bearings have been installed and allowed
to cool, check to ensure that they have not moved
out of position in shrinking. If movement has oc-
curred, use a suitable sized sleeve and a press to
reposition the bearings against the shaft shoul-
ders.
If heating the bearings is not practical, use a suit-
able sized sleeve and an arbor (or hydraulic) press
to install the bearings on the shaft.
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.
Install the oil seal (30) in the outboard bearing
cover (28). Install the gasket (27), and secure the
bearing cover to the bearing housing (21) with the
capscrews (29).
Slide the shaft and assembled bearings into the
bearing housing until the outboard bearing seats
against the bearing cover. Be careful not to dam-
age the lip of the oil seal (30) on the shaft keyway.
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Install the inboard oil seal (41) in the bearing cover
(20). Slide the inboard bearing cover and gasket
(40) over the shaft and secure them with the cap-
screws (19). Be careful not to damage the oil seal
on the shaft threads.
Install the deflector (42) and shaft key (31).
If removed, secure the foot (35) to the bearing
housing with the hardware (33 and 34), and sup-