Page 9 - Machinery Component Maintenance

tion. Controlled Torque Bolt-Up of Flanged Connections. Recommendations
for the Installation, Fabrication, Testing, and Cleaning of Air, Gas, or Steam
Piping. Appendix 4-A-Checklist for Rotating Equipment: Machinery Piping.
Appendix 4-B-Specifications for Cleaning Mechanical Seal Pots and Piping
for Centrifugal Pumps. Appendix 4-C-Detailed Checklist for Rotating Equip-
ment: Pump Piping.

Part II: Aliflnment and Balancing ......................... 16s

5 Machinery Alignment ............................... 171

Prealignment Requirements. Choosing an Alignment Measurement Setup.
Checking for Bracket Sag. Face Sag Effect-Examples. Interpretation and Data
Recording. Graphical Techniques. Reverse Indicator Method Using Crossover
Brackets. Horizontal Movement by Vertical Adjustment. Thermal Growth-
Eleven Ways to Correct for it. Thermal Growth Estimation by Rules of Thumb.
6 Balancing of Machinery Components ................... 238

Definition of Terms. Purpose of Balancing. Units of Unbalance. Types of Un-
balance. Motions of Unbalanced Rotors. Balancing Machines. Centrifugal Bal-
ancing Machines. Measurement of Amount and Angle of Unbalance. Classifi-
cation of Centrifugal Balancing Machines. Maintenance and Production
Balancing Machines. Supporting the Rotor. Balancing Keyed End-Drive
Adapters. Balancing Arbors. Testing Balancing Machines. Test Procedures.
Balance Tolerances. Balance Errors Due to Rotor Support Elements. Com-
puter-Aided Balancing. Field Balancing Overview. The Vector Diagram. Ap-
pendix 6-A-Balancing Terminology. Appendix 6-B-Balancing Machine No-
menclature. Appendix 6-C-Balancing and Vibration Standards. Appendix
6-D-Critical Speeds of Solid and Hollow Shafts.

Part 111: Maintenance and Repair of Machinery Components .... 349

7 Ball Bearing Maintenance and Replacement ............. 351
Engineering and Interchangeability Data. Cleanliness and Working Conditions
in Assembly Area. Removal of Shaft and Bearings from Housing. Cleaning the
Bearing. Shaft and Housing Preparation. Checking Shaft and Housing Mea-
surements. Basic Mounting Methods. Hints on Mounting Duplex Bearings.
Preloading of Duplex Bearings. Importance of the Correct Amount of Preload.
Assembly of Bearings on Shaft. Cautions to Observe During Assembly of Bear-
ings into Units. Mounting with Heat. Checking Bearings and Shaft After Instal-
lation. Testing of Finished Spindle. Maintain Service Records on All Spindles.
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