Gorman-Rupp Pumps 610M20-B 688324 and up - Manual (Page 26)

OM−01391 60 SERIES
MAINTENANCE & REPAIR PAGE E − 7
INSTALLATION OF FEDERAL MOGAL 5300W
OR NTN 3300 SERIES BEARINGS
(OPEN OR ENCLOSED IMPELLERS)
INSTALLATION OF MRC/SKF 5300M, 5300E OR
TIMKEN 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 2. Inboard Bearing Position
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 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.
After installation on the shaft, pack the bearings by
hand with No. 0 lithium based grease.
If removed secure the bearing cap gasket (34) and
bearing cap (35) to the pedestal (31) with the hard-
ware (36 and 37).
Slide the shaft and assembled bearings into the
pedestal bore until the inboard bearing (33) seats
squarely against the bearing cap (35).
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Apply a light coating of oil to the lip of the oil seal
(28) and press it into the bearing cap (29) 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 (30) as
previously remove. Install the bearing cap gasket
(23) and secure them to the pedestal with the hard-
ware (24 and 25). Be careful not to damage the lip
of the oil seal on the shaft keyway.
NOTE
Impeller shaft endplay should be between .002 and
.010 inch (0,05 to 0,25 mm). Add or subtract shims
to establish the correct endplay.
Seal Reassembly and Installation
(Figures 1 and 3)
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