Goulds Pumps 3196 i-FRAME - IOM - Manual (Page 99)

Maintenance
h) Attach the bearing-frame foot (241) and fasten the bolts (370F) by hand.
2. Install the outboard bearings (112A) on the shaft (122).
The regreasable bearing has a single shield. Make sure that the bearing is installed with the
shield away from the impeller.
The duplex bearings are mounted back-to-back. Make sure that the orientation of the
bearings are correct.
a) Inspect the shaft (122) to ensure that it is clean, dimensionally correct, and is free of
nicks and burrs.
b) Lightly coat the bearing seating with a thin film of oil.
c) Remove the bearings (112) from their packaging.
d) Wipe the preservative from the bearing (112) bore and outer diameter.
e) Use an induction heater with a demagnetizing cycle to heat both bearings (112) to an
inner ring temperature of 230 °F (110 °C).
f) Place both bearings (112) on the shaft (122) with the large outer races together (back-
to-back).
g) Position the bearings (112) on the shaft (122) against the shoulder and snug the
locknut (136) against the bearings until they are cool.
The locknut prevents the bearings from moving away from the shaft shoulder as they
cool. Rotate the outer bearing rings relative to each other as they are placed on the
shaft to assure good alignment.
h) Remove the bearing locknut (136) after the bearings (112) are cool.
3. Put the lockwasher (382) onto the shaft (122).
4. Thread the locknut (136) onto the shaft (122) and tighten it until it is snug.
5. Bend the tangs of the lockwasher into the slots of the locknut.
6. Place the bearing-clamp ring (253B) onto the shaft (122).
Make sure that the orientation of the bearing-clamp ring is correct.
7. Coat the inner surfaces of the bearings with lubricant.
Model 3196 i-FRAME Installation, Operation, and Maintenance Manual 97