Gorman-Rupp Pumps 08C1-GA 1026171 and up - Manual (Page 31)

OM−01265 0 SERIES
MAINTENANCE & REPAIR PAGE E − 11
ings. Bearings should never be heated with a di-
rect 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 them onto
the shafts, one at a time, until they are fully seated.
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.
NOTE
Position the bearing (37) on the shaft as indicated
by the following illustrations.
INSTALLATION OF NEW DEPARTURE OR
BCA/FEDERAL MOGAL 5300W SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
INSTALLATION OF MRC/SKF 5300M OR
FAFNIR 5300W SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
LOADING
DIRECTION OF
THRUST
BALL LOADING
GROOVE POSITIONED
AWAY FROM IMPELLER
GROOVE
DIRECTION OF
THRUST
LOADING
BALL LOADING
GROOVE POSITIONED
TOWARD IMPELLER
GROOVE
Figure 5. Double Row Bearing Installation
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 suitably sized sleeve and a press to
reposition the bearings.
If heating the bearings is not practical, use a suit-
ably sized sleeve and an arbor (or hydraulic) press
to install the bearings onto the shafts.
When installing the bearings onto the
shafts, never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.
Lay the gearbox housing on the bed of an arbor (or
hydraulic) press with the pump side down, and
support it so it is level and stable. Lubricate the in-
board drive shaft bearing (9) and slide it into the
gearbox housing bore until fully seated.
Install the woodruff key (10) in the shaft keyway.
Position the helical gear (11) against the inboard
bearing. Slide the drive shaft and assembled out-
board bearing into the gearbox housing. Align the
woodruff key with the gear keyway, and slide the
gear onto the shaft. Press the drive shaft into the
inboard bearing until fully seated. Install the cover
plate and gasket (23 and 24) and secure with the
capscrews (25).
Apply a light coating of oil to the lip of the oil seal
(17) and press it into the bearing cap (30) with the
lip positioned as shown in Figure 1. The face of the
oil seal should be just flush with the outer face of
the bearing cap.
Install the same thickness of bearing shims (31) as
previously removed. Install the bearing cap gasket
(14) and slide the bearing cap over the drive shaft,