Emerson Vilter VSS Installation, Operation & Maintenance Manual page 10

Section Title
Gaterotor Bearing Inspection ....................................................................................................... 5-37
Gaterotor Inspection .................................................................................................................... 5-38
A) Gaterotor - Main Housing Shelf Clearance ..................................................................... 5-38
B) Gaterotor Float Measurement ....................................................................................... 5-39
C) Gaterotor Backlash Inspection ...................................................................................... 5-40
Important Notes ............................................................................................................... 5-42
Additional Inspections .................................................................................................................. 5-42
Post Inspection............................................................................................................................. 5-42
Gaterotor Assembly Replacement (All Compressors Except VSM 301-701 & VSM 97-127 Compressors) ... 5-42
Removal ....................................................................................................................................... 5-42
Installation ................................................................................................................................... 5-43
Gaterotor Assembly Replacement (VSM 301-701 Compressors Only) ....................................................... 5-46
Removal ....................................................................................................................................... 5-46
Installation ................................................................................................................................... 5-46
Gaterotor Assembly Replacement (VSM 97-127 Compressors Only) ......................................................... 5-48
Removal ....................................................................................................................................... 5-48
Installation ................................................................................................................................... 5-48
Gaterotor Disassembly (All Compressors Except VSM 97-127 Compressors) ............................................. 5-50
Gaterotor Blade Removal .............................................................................................................. 5-50
Gaterotor Blade Installation .......................................................................................................... 5-51
Gaterotor Thrust Bearing Removal ................................................................................................ 5-51
Gaterotor Thrust Bearing Installation ............................................................................................ 5-51
Gaterotor Roller Bearing Removal ................................................................................................. 5-52
Gaterotor Roller Bearing Installation ............................................................................................. 5-52
Gaterotor Disassembly (VSM 97-127 Compressors Only) ......................................................................... 5-53
Gaterotor Blade Removal .............................................................................................................. 5-53
Gaterotor Blade Installation .......................................................................................................... 5-53
Gaterotor Thrust Bearing Removal ................................................................................................ 5-54
Gaterotor Thrust Bearing Installation ............................................................................................ 5-54
Gaterotor Roller Bearing Removal ................................................................................................. 5-54
Gaterotor Roller Bearing Installation ............................................................................................. 5-54
Compressor Shaft Seal Replacement ........................................................................................................ 5-55
Shaft Seal Assembly ..................................................................................................................... 5-55
Handling Seal Face with Care ........................................................................................................ 5-55
Compressor Shaft Seal Replacement - For VSS/VSM Units ............................................................. 5-56
Tools ................................................................................................................................ 5-56
Removal ........................................................................................................................... 5-56
Installation ....................................................................................................................... 5-56
Compressor Shaft Seal Replacement - For VSH/VSSH Units ........................................................... 5-58
Shaft Seal Removal -For Part# 25985Y and 25985YA ......................................................... 5-58
Shaft Seal Removal - For Part# 28985W and 28985WA .................................................... 5-59
Prior to Shaft Seal Installation ........................................................................................... 5-60
Shaft Seal Installation For Part# 25985Y and 25985YA ...................................................... 5-61
Shaft Seal Installation - For Part# 28985W and 28985WA ................................................ 5-61
Slide Valve Actuator Assembly Replacement ............................................................................................ 5-63
Removal ....................................................................................................................................... 5-63
Installation ................................................................................................................................... 5-63
Actuator Installation Using Anti-Rotation Bolts ............................................................................. 5-64
Slide Valve Command Shaft Assembly Replacement ................................................................................. 5-65
Removal ....................................................................................................................................... 5-65
Installation ................................................................................................................................... 5-65
Liquid Injection Control Valve Station ....................................................................................................... 5-66
Main Rotor Assembly ............................................................................................................................... 5-68
Torque Specifications ............................................................................................................................... 5-68
Using A Torque Wrench Correctly ............................................................................................................. 5-69
TOC − 4
Table of Contents
VSS/VSM/VSH/VSSH • Installation, Operation and Maintenance Manual • Emerson • 35391SD
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