22
7.
Examine motor for grease leakage beyond the seals.
8.
Examine motor for bearing wear.
9.
Clean all mating surfaces of the pump including the seal faces.
10.
Examine the impeller vanes for wear. Replace it if there is more than 1/4” of wear.
11.
If impeller shows sign of wear, but is within limits, check for dynamic balance. If it is out of tolerance, have it
rebalanced. If it remains out of limits, replace it.
12.
Inspect labyrinth seal for cuts or cracks.
13.
Inspect the casing gasket for cuts, flattened areas, etc. (Standard gaskets are glass filled Teflon – they may be used
more than once.)
14.
Inspect the impeller gasket. Look for cuts, flattened out areas, etc.
15.
Examine the pump for shaft/sleeve run out. (Figure 6.1)
Figure 6.1: Shaft Run Out
Checking for shaft run out. Run out should
not be more then 0.0015”
16.
Examine pump for radial bearing fit (Figure 6.2)
Figure 6.2: Radial Play
Checking for play on radial bearing. End
play should not be more then 0.0015”
