4.
Assemble the rotating element in the lower half of the casing (100), placing the casing ring pins
(445A) in the casing main joint.
To ease assembly, slide the inboard bearing housing toward the coupling prior to assembling the
rotating element in the casing.
5.
Bolt the outboard bearing housing (134) to lower half of the casing (100) first.
Make sure that both bearing housings are seated properly in the lower half.
6.
Bolt the inboard bearing housing (134) to the lower half of the casing (100).
Check again to make sure that bearing housings are seated properly.
6.8.4 Assemble the casing
1.
Place a sling around the lifting ears, and then lift the upper half off the ground and rotate it so that
the main joint flange is vertical.
Make sure a stabilizing rod is installed.
2.
If the impeller was removed from the shaft, then double-check the rotation of the pump.
To determine the correct direction of rotation, refer to
6.5.2 Change the rotation on page 44
.
3.
Move the upper half of the casing towards the lower half of the casing.
You can use the alignment rods located in the lower half of the casing as guides.
4.
Before you connect the upper half to the lower half, use the dowel pins to guide the upper half into
its final exact position.
5.
Reinstall all main joint bolts and tighten to the following torque values:
Screw type
Torque
0.75 in. -10 Ferry Cap Countr-bor screws (Grade 8)
300 ft-lb (407 Nm) minimum
1.0 in. -8 Ferry Cap Countr-bor screws (Grade 8)
400 ft-lb (542 Nm) minimum
The number of casing bolts varies with the size of the pump. See
6.7.2.1 Dimension A on page 50
NOTICE:
Avoid leakage at the main joint. Tighten bolts to the proper values in the proper sequence to
obtain the proper gasket compression.
6.8 Vertical units
Model 3409 Installation, Operation, and Maintenance Manual
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