228
122
203
101
202
Figure 62: Impeller wear-ring runout
If the impeller wear ring runout is in excess of the acceptance criteria in table above:
1.
Check for distortion at the set screw areas.
2.
Check the shaft runout and all mating surfaces of the shaft and impeller hub for perpendicu-
larity.
3.
True up all damaged surfaces.
4.
Recheck the impeller wear-ring runout.
6.5.6 Bearing-frame inspection
Checklist
Check the bearing frame for these conditions:
•
Visually inspect the bearing frame for cracks.
•
Check the inside surfaces of the frame for rust, scale, machining burrs, or debris. Remove all loose
and foreign material.
•
Make sure that all lubrication passages are clear.
•
Inspect the inside diameter of bearing bores.
If any bores are outside the measurements in the
Table 11: Bearing fits and tolerances table (SI
table, replace the bearing frame.
6.5 Preassembly inspections
Model 3700i API610 / Type OH2 Installation, Operation, and Maintenance Manual
89
