Goulds Pumps 4550 - IOM - Manual (Page 19)

Impeller Adjustment for Vertical Sizes:
4x6-10 6x8-13
2x3-13 8x10-15
3x4-13 10x12-16
4x6-13 All Cantilever Sizes
1. Loosen three adjusting screws evenly.
2. Tighten up equally on outer screw until you can feel
the impeller just starting to rub on the casing face.
Rotate the shaft frequently while taking up on these
bolts, so you know when it begins to bind.
3. Now loosen the outer screw evenly until you can
insert a feeler gauge, corresponding to the impeller
clearance from Table 1 above, under each of the three
bolt heads.
NOTE: For “Quick Field” adjustment, loosen outer
screw two flats.
4. Tighten adjusting screw evenly until the bearing
housing is backed up against the outer screw.
5. Check to be sure the shaft turns freely.
4550 IOM 5/08
15
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