6.5.2 Shaft and sleeve replacement guidelines
Two types of sleeves
The 3198 is offered with either a metallic sleeve that uses the standard 3196 shaft or a PTFE sleeve.
The PTFE sleeve requires a special shaft and a different inboard labyrinth oil seal.
Shaft measurements check
Replace the shaft (122) if any measurements exceed acceptable values. See Bearing fits and toleran-
ces.
122
Figure 85: Shaft measurements check
Straightness check
Replace the shaft (122) if runout exceeds the values in this table:
Table 17: Shaft runout tolerances for sleeve fit and coupling fit
Sleeve fit in millimeters | inches Coupling fit in millimeters | inches
With sleeve
0.025 | 0.001
0.025 | 0.001
Without sleeve
0.051 | 0.002
0.025 | 0.001
Shaft and sleeve check
126
Figure 86: Shaft and sleeve check
•
Check the shaft and sleeve (126) surface for grooves and pitting.
•
Replace the shaft and sleeve if any grooves or pits are found.
6.5.3 Bearing-frame inspection
Checklist
Check the bearing frame for these conditions:
•
Visually inspect the bearing frame and frame foot for cracks.
•
Check the inside surfaces of the frame for rust, scale, or debris. Remove all loose and foreign ma-
terial.
•
Make sure that all lubrication passages are clear.
•
If the frame has been exposed to pumped fluid, inspect the frame for corrosion or pitting.
6.5 Pre-assembly inspections
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Model CV 3196 i-FRAME Installation, Operation, and Maintenance Manual
