3.
Tighten pump and driver hold-down bolts.
4.
Check gap and angular misalignment, shaft axes concentric but not parallel.
1.
Coupling other than
spider-insert
type.
The normal gap (distance between coupling halves) is 1/8". Check angular misalignment
by inserting a feeler or taper gauge at four points on the circumference of the coupling
halves at 90 degree intervals. See
Figure 4: Checking angular alignment, except spider-
. The unit will be in angular alignment when the measurements
show the coupling faces are the same distance apart at all points. Adjustment for gap and
for obtaining angular alignment is obtained be loosening the driver hold down bolts and
shifting or shimming driver as required. Tighten driver hold down bolts after adjustments
are made.
Figure 4: Checking angular alignment, except spider-insert type
2.
Spider-insert
type coupling.
The normal gap (distance of the space between coupling halves and the thickness of the
spider-insert) is 1/16". Check angular misalignment by using calipers at four points on the
circumference of the outer ends of the coupling hubs at 90 degree intervals. See
5: Checking angular alignment, spider-insert type on page 13
. The unit will be in angular
alignment when the measurements show the coupling hubs to be the same distance
apart at all points. Adjustment for obtaining the gap and angular alignment is obtained be
loosening the driver hold down bolts and shifting or shimming driver as required. Tighten
driver hold down bolts after adjustments are made.
2.3 Alignment - initial
12
Model 3755 Installation, Operation, and Maintenance Manual
Содержание Goulds Pumps 3755
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