10. Place the pre-mounted unit on the discharge casing (100D) and tighten the nuts (425) firmly. See
the Torque values table.
11. Rotate the shaft (122) in order to make sure that it turns freely.
12. Mount the coupling half. You might need to preheat to a maximum of 230°F (110°C).
6.7 Assembly references
6.7.1 Torque values
Table 3: Maximum torque values, in ft-lbs (Nm) for 1.5 x 2.5-7 and 2.5 x 4-8 pumps
Thread joint Screw
Hexagonal
nut
Quality
Pump size
1.5 x 2.5-7
2.5 x 4-8
Size
Dry
Lubricated Size
Dry
Lubricated
Tie bolt
356S
357F
8.8
3/4-
11UNC
190
(258)
142 (193)
1- 8UNC 325 (441) 295 (400)
Bearing
bracket
(228C) with
suction casing
(100F) or dis-
charge casing
(100D)
356A
425
8.8
8 x M12 31 (42)
28 (38)
8 x M12 42 (57)
38 (52)
Table 4: Maximum torque values, in ft-lbs (Nm) for 4 x 5-10 and 5 x 6-11 pumps
Thread joint
Screw
Hexagonal
nut
Quality
Pump size
4 x 5-10
5 x 6-11
Size
Dry
Lubricated Size
Dry
Lubricated
Tie bolt
356S
357F
8.8
1- 8UNC 244
(331)
222 (301)
1- 8UNC 352
(477)
320 (434)
Bearing brack-
et (228C) with
suction casing
(100F) or dis-
charge casing
(100D)
356A
425
8.8
8 x M16 71 (96)
64 (87)
8 x M20 112
(152)
99 (134)
6.7.2 Gap widths
Area A - Gap between the sleeve and suction casing
Pump size Nominal diameter
Gap "new" (inches)
Maximum permissible gap
All iron and stainless fitted
Stainless steel
Minimum
Maximum
Minimum Maximum
1.5 x 2.5-7 1.575
0.004
0.006
0.010
0.012
0.020
2.5 x 4-8
1.850
0.006
0.008
0.012
0.014
0.022
4 x 5-10
2.165
0.006
0.008
0.012
0.014
0.022
5 x 6-11
2.559
0.008
0.010
0.014
0.016
0.024
6.7 Assembly references
56
Model 3355 Installation, Operation, and Maintenance Manual
Содержание Goulds Pump 3355
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