Page 277 - Practical Machinery Management for Process Plants Major Process Equipment Maintenance and Repair
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Power Transmission Gears 259
Indicator clamps for bridging across the coupling sleeves and/or hubs
should be installed as shown in Figure 6-3 1. This method allows the final
hot alignment check to be made without disconnecting the coupling halves.
Since no two couplings can be aligned absolutely perfectly, suggested maxi-
mum allowable runout values for use in alignment procedures are listed in
Table 6-1. Proceed with the hot alignment check in the following manner:
1. Record ambient temperature and oil sump temperature on work-
sheet.
2. Rotate shafts in the direction they were designed to operate under
load conditions.
Figure 6-31. Hot alignment check.