Gorman-Rupp Pumps 612L20B-B 806819 and up - Manual (Page 27)

60 SERIES OM-01919
MAINTENANCE & REPAIR PAGE E - 8
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.
Press the oil seal (15) into the inboard bearing cap
(31) with the lip positioned as shown in Figure
E-1. Center the seal in the bearing cap. Replace
the bearing cap gasket (30) and secure the bear­
ing cap to the pedestal with the hardware (13 and
14).
Slide the shaft and assembled bearings into the
pedestal until the inboard bearing is fully seated
against the bearing cap. Be careful not to roll or
damage the oil seal lip.
When installing the shaft and bearings into
the pedestal bore, push against the outer
race. Never hit the balls or ball cage.
Press the oil seal (23) into the outboard bearing
cap (20) with the lip positioned as shown in Figure
E-1. Center the seal in the bearing cap. Replace
the bearing cap gasket (19). Install the same thick­
ness of bearing adjusting shims (26) as previously
removed and secure the bearing cap to the pedes­
tal with the hardware (21 and 22). Be careful not to
roll or damage the oil seal lip on the shaft keyway.
NOTE
Shaft endplay should be between .002 and .010
inch (0,05 and 0,25 mm). Add or remove adjusting
shims to establish the correct endplay.
Secure the pedestal to the base with the previously
removed hardware. Install the shaft key (24). Be
sure to reinstall any leveling shims used under the
pedestal mounting feet.
Lubricate the bearings and pedestal as indicated
in LUBRICATION at the end of this section.
Seal Reassembly and Installation
Clean the bore of the seal plate, split packing gland
and impeller 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.
Inspect the impeller shaft for damage. Small
scratches or nicks may be removed with a fine file
or emery cloth. If excessive wear exists, the shaft
will have to be replaced.
Install the slinger ring (32) on the shaft.
To install the packing seal, lay the seal plate (43) on
a flat surface with the impeller side down. Position a
dowel the same size as the impeller shaft in the
center of the seal plate bore and install the nwe
packing sal as follows.
NOTE
It is recommended that replacement rings pre‐cut
to the correct width and length, and packaged in a
set be ordered from the Gorman‐Rupp Company or
your Gorman‐Rupp distributor. However, if bulk
commercial packing will be used in this unit, pre­
pare and install it in accordance with the following
steps in order to ensure that the packing will form a
tight seal.