Goulds Pumps AF (Axial Flow) (42"/1200mm/54/60"/66") LM/LMR Bearings - IOM" - Manual (Page 25)

AF (42-66) IOM 25
4. Correct any misalignment by shimming the under
the motor or gearbox feet to attain the proper
alignment.
When using positions 2 and 4 in steps 1-3, correct
any misalignment by sliding the motor back and forth
to attain the proper alignment.
5. Repeat steps 1-4 substituting position 2 for
position 1 and position 4 for position 3. Use the
same marks made on the coupling from position 1
and be sure to turn the coupling halves together.
METHOD 2 - Feeler Gauge Method
For the following steps refer to Fig. 16.
1. Insert a feeler gauge at position 1 at the periphery
of the couplings. Mark this position on both
flanges.
2. Record the largest gauge size that fits snugly
between the two flanges.
3. Rotate both flanges to position 3 - 180
°.
4. Insert a feeler gauge at the periphery of the
couplings at position 3
5. Record the largest gauge size that fits snugly
between the two flanges.
6. Calculate the difference between the readings at
positions 1 and 3. The difference should not be
greater than .003" (.076mm).
7. Correct any misalignment by shimming under the
motor or gearbox feet to attain the proper
alignment.
When using positions 2 and 4 in steps 1 - 6, correct
any misalignment by sliding the motor or gearbox
back and forth to attain the proper alignment.
8. Repeat steps 1-6 substituting positions 2 and 4 for
position 1 and 3 respectively. Use the same marks
made on the coupling from position 1 and be sure
to turn the coupling halves together.
Parallel Alignment
The unit is in parallel alignment when indicator “P”
(Parallel Indicator) does not vary by more than .003”
(.076mm) as measured at four points on the coupling
periphery 90' apart at operating temperature. There are
two methods outlined below that are acceptable to
achieve the desired alignment.
NOTE: Equal amounts of shims must be added to
or removed from each driver foot. Otherwise the
vertical angular alignment will be affected.
METHOD I - Dial Indicator Method
For the following steps, refer to Fig. 16.
1. Zero the indicator “P” at position 1 of coupling half
(Y). Mark this position on both flanges.
2. Rotate both flanges 180
° to position 3. Observe
needle and record reading.
3. Negative Reading - Coupling half (Y) is shifted
toward position 1.
If the value is greater than .003” (.076mm), correct the
misalignment by evenly (at equal amounts on both
sides) shimming the motor higher.
When using positions 2 and 4 in steps 1 - 2, correct any
misalignment by sliding the motor evenly toward
position 2.
Positive Reading - Coupling half (Y) is shifted
toward position 3.
If the value is greater than .003" (.076mm), correct the
misalignment by evenly (at equal amounts on both
sides) shimming the motor or gearbox lower.
When using positions 2 and 4 in steps 1 - 2, correct any
misalignment by sliding the motor or gearbox evenly
toward position 4.
4. Repeat steps 1-3 until indicator “P” reads .003"
(.076mm) or less.
Directions for viewing coupling
View from front end of pump
Fig. 16
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