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Horizontal End Suction Pump for Chemical Process, ASME B73.1-2001
Installation, Operation, and Maintenance Manual – CPP21
1. Distance from centerline of one disc pack to the centerline of the other disc pack. In the example, it is 9-
1/2 inches (241.3 mm).
2. Distance from centerline of motor disc pack to center of front motor foot. In this example, it is 3 inches
(76.2 mm).
3. Distance from the center of the motor front feet to the center of the motor back feet. In this example, it
is 5-1/4 inches (133.4 mm).
4. Distance from disc pack to dial indicator on center member. In this example, the distance is 8 inches
(203.2 mm).
Figure 5.7 Across the disc pack alignment graphical analysis example.
The next step is to determine indicator sag. Set up your bracket arrangement on a pipe. Set the indicator at '0'
on top. Roll set up until indicator is at the bottom of pipe. It will read negative. In this example, it was found to
be -0.004 inch (-0.102 mm).
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