OM-07089
S SERIES PUMPS
PAGE E - 21
MAINTENANCE AND REPAIR
pound to the O. D. of the bearing (41) and bearing
cap (44). The bearing
must
be installed in the bear
ing cap before assembling the bearing on the
shaft. Position the bearing as indicated in the in
structions accompanying the bearing or as shown
in Figure E-7 and slide it into the bearing cap.
Heat the bearing and bearing cap assembly. With
the impeller end of the shaft up, slide the bearing
and bearing cap onto the shaft until it seats square
ly against the shoulder.
Be careful
not to damage
the oil seal.
DIRECTION OF
THRUST
INSTALLATION OF SKF 5200 AND 5300 SERIES BEARINGS
NOTE:
THIS BEARING IS MANUFACTURED WITH TWO SEALS OR SHIELDS. WHEN INSTALLED ON THE SHAFT, THE MAN
UFACTURER'S PART NUMBER DESCRIPTION (LOCATED ON SIDE FACE OF BEARING OR BEARING O.D.) MUST BE
LOCATED WITH THE TEXT AWAY FROM THE IMPELLER.
PART NUMBER MARKINGS ARE
LOCATED EITHER ON BEARING
O.D. (OFFSET FROM CENTER) OR
ON SIDE FACE OF BEARING. FOR
EITHER TYPE, POSITION BEAR
ING WITH TEXT AWAY FROM IM
PELLER.
Figure E-7. Double‐Row Bearing Positioning
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. Make certain that they are
seated squarely against the shaft shoulders.
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.
Use
fresh
solvent to clean the bearing seating bore
of the motor housing (70). Install the O‐rings (54
and 55) in the grooves on the motor housing. Apply
`Loctite Pipe Sealant With Teflon No. 592' or equiv
alent compound to the threads of the moisture de
tector (36), and screw it into the tapped hole in the
intermediate. Secure the probe wire (38) to the
moisture detector (36).
Slide the intermediate over the shaft until it is fully
seated over the lower bearing. Align the tapped
holes in the bearing cap with the holes for the cap
screws (48). Apply `Never‐Seez' or equivalent
compound on the threads of the capscrews, install
the lockwashers (49), and secure the bearing cap
to the lower motor housing. Torque the capscrews
(50) evenly in a cross sequence to 60 ft. lbs. (720 in.
lbs. or 8,3 m. kg.).
Install three lifting eyes (not supplied) in the holes
for the capscrews (48) in the intermediate (47), and
hook a three‐leg sling to the lifting eyes.
Rotor Installation
(Figure E-2)
Lift the intermediate, rotor and shaft assembly, and
align it with the motor housing and stator. Make
sure the probe wire (38) is aligned in the groove in
the inside of the motor housing, between the stator
and the motor housing.
Lower the intermediate, rotor and shaft assembly
down into the stator until the upper bearing (41) is
fully seated in the bore of the motor housing.
Apply `Loctite Threadlocker No. 242' or equivalent
compound to the threads of the capscrews (48),
and secure the intermediate to the motor housing
with the hardware (14, 15 and 69). Torque the cap
screws to 300 ft. lbs. (3600 in. lbs. or 41,5 m. kg.).
