Goulds Pumps 3180-86 - IOM - Manual (Page 48)

3. Loosen the jam nuts (423B) on the jack bolts (371A), and then back the bolts out about two turns.
4. Tighten the locking bolts evenly (370C), bringing the bearing housing (134A) towards the frame (228)
until the impeller contacts the casing.
5. Turn the shaft to ensure that there is contact between the impeller and the sideplate or wear ring.
6. Set the indicator to zero and loosen the locking bolt (370C) about one turn.
7. Thread in the jack bolts (371A) until the jack bolts evenly contact the bearing frame.
8. Tighten the jack bolts evenly about one flat at a time, moving the bearing housing (134A) away from
the bearing frame until the indicator shows the correct clearance.
Refer to the impeller clearance table to determine the correct clearance.
9. Tighten the bolts evenly in this order:
a) Tighten the locking bolts (370C).
b) Tighten the jack bolts (371A).
Make sure to keep the indicator reading at the proper setting.
10. Make sure the shaft turns freely.
11. Replace the coupling guard.
12. Check both the thrust (332A) and the radial (333A) labyrinth seals to make sure they are seated
properly in the housing.
Set the impeller clearance - feeler gauge method
WARNING:
Always disconnect and lock out power to the driver before you perform any installation or maintenance
tasks. Failure to disconnect and lock out driver power will result in serious physical injury.
1. Lock out the driver power and remove the coupling guard.
2. Loosen the jam nuts (423B) on the jack bolts (371A), and then back the bolts out about two turns.
3. Evenly tighten the locking bolts (370C), bringing the bearing housing (134A) towards the frame (228)
until the impeller contacts the casing.
4. Turn the shaft to ensure that there is contact between the impeller and the sideplate or wear ring.
5. With a set of feeler gauges, measure and record the gap between the bearing housing and the frame.
6. Turn back the locking bolt (370C) one turn.
7. Add the proper impeller clearances to the feeler gauge stack and back the housing away from the
frame with the adjusters (371A) until the feeler gauge fits.
Evenly tighten adjuster bolts (371A) (about one flat at a time) in making this adjustment.
8. Evenly tighten the locking bolts (370C) and then the adjuster bolts (371A) while keeping the indicator
reading at the proper setting.
9. Make sure the shaft turns freely.
10. Replace the coupling guard.
11. Check both the thrust (332A) and radial (333A) labyrinth seals to make sure they are seated properly
in the housing.
Couple the pump and driver
WARNING:
Always disconnect and lock out power to the driver before you perform any installation or maintenance
tasks. Failure to disconnect and lock out driver power will result in serious physical injury.
Commissioning, Startup, Operation, and Shutdown
46 Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual