6.7.3 Install the bearings
NOTICE:
To protect rubber parts during assembly, cover the O-ring groove, keyways, and threads with
electrical tape.
There are several methods you can use to install bearings. The recommended method is to
use an induction heater that heats and demagnetizes the bearings. Bearings can get hot and
can cause physical injury.
1.
Heat the bearings (168 and 410).
Use either dry heat with the bearing well lubricated or an induction heater.
NOTICE:
Do not heat the bearings above 135°C | 275°F.
2.
Assemble the bearing covers:
a) Press the inboard bearing isolators (333A) into each bearing cover.
The inboard bearing cover (119) is approximately 1/4 in. (0.6 cm) less in width than the outboard
bearing cover (109). This is the only dimensional difference.
b) Install the gaskets (360) on each bearing cover.
a) Slide the bearing covers (109 and 119) onto the shaft.
3.
Install the snap rings (276), and then install the thrust washer (535) on the outboard end.
4.
Press the heated bearings (168 and 410) onto the shaft against the snap ring or thrust washer.
5.
Install the locknut (136) and lockwasher (382) on the outboard end.
6.
Make sure the locknut is secured, and then bend over the tab on the lockwasher.
7.
Do one of the following:
Lubrication type
Instruction
Grease
Cool the bearings to room temperature and coat them with 2–3 ounces of a rec-
ommended grease. See
6.3.1.1 Lubricating-grease requirements on page 38
Oil
6.3.2 Lubricate the oil-lubricated bearings on page 39
for installation of oil-lu-
bricated parts.
8.
Press the outboard bearing isolator (332A) into the bearing housing for the coupling end.
9.
Slide the bearing housings (134) onto the shaft over the bearings (168 and 410).
10. Assemble the bearing cover to the bearing housing with two capscrews (371C).
6.7.4 Install the rotating element
1.
Replace the pump coupling half and the key (400).
2.
Assemble the rotating element in the lower half of the casing (100).
Make sure to correctly locate the casing ring pins (445A) in the casing main joint slot.
To ease assembly, slide the inboard bearing housing toward the coupling before assembling the ro-
tating element in the casing.
3.
Bolt the outboard bearing housing in place.
NOTICE:
Make sure that both bearing housings are seated properly in the lower-half casing.
4.
Bolt the inboard bearing housing in place.
6.7 Reassembly
Model 3409 Installation, Operation, and Maintenance Manual
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