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6.7 Reassembly
1
5
4
1.
Cover
2.
Phenolic disc
3.
Pump shaft
4.
Motor shaft
5.
Hub
4.
Push the pump and motor shafts against the phenolic disc.
The thrust bearing of the pump limits the end float toward the pump. The coupling covers limit the
end float toward the motor.
The thrust bearing is large enough to carry any magnetic thrust that is developed by the motor, if the
pump and motor are aligned properly.
When this procedure is completed, follow the procedures in
6.7.7 Torque table
Bolt Dia. (D) in. - threads/
inch
¼-20
5/16-18
3/8-16
7/16-14
½-13
9/16-12
5/8-11
¾-10
7/8-9
1-8
1.125-7
1.125-8
1.25-7
1.25-8
1.375-6
1.375-8
1.5-6
1.5-8
1.5-12
1.625-8
1.75-5
56
2
3
Tensile Stress Area
(Ab), (sq-in)
0.0318
0.0524
0.0775
0.1063
0.1419
0.1819
0.226
0.3345
0.4617
0.6058
0.7633
0.7904
0.9691
1.000
1.155
1.234
1.405
1.492
1.581
1.775
1.899
Model 3498 Installation, Operation, and Maintenance Manual
4.4 Pump-to-driver alignment on page
Max preload (lbs)
801
1320
1953
2679
3576
4584
5695
8429
11635
15266
19235
19918
24421
25200
29106
31097
35406
37598
39841
44730
47855
32.
Torque (ft-lb) Nickel or
Moly Anti seize, K=0.15
3
5
9
15
22
32
44
79
124
191
270
280
382
394
500
534
664
705
747
909
1047
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