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Section Title
Pre-Sampling ...................................................................................................................... 5-8
Sampling Procedure ........................................................................................................... 5-8
Oil Sample Analysis Report ............................................................................................... 5-10
Oil Draining .................................................................................................................................. 5-11
Oil Charging ................................................................................................................................. 5-12
Tool Required ................................................................................................................... 5-12
Charging During Operation .............................................................................................. 5-12
Charging During Shutdown .............................................................................................. 5-12
Filter Element Replacement (Single Oil Filter Assembly) and Oil Pump Strainer Servicing .............. 5-13
Drain Oil From Isolated Oil Line ......................................................................................... 5-13
Oil Filter Element Removal (For 3111A Oil Filter Housing) ................................................. 5-14
Oil Filter Element Removal (For 3110A or 3112A Oil Filter Housing) .................................. 5-14
Oil Pump Strainer Screen Removal and Service .................................................................. 5-14
Oil Pump Strainer Screen Installation ................................................................................ 5-15
Oil Filter Element Installation (For 3111A Oil Filter Housing) ............................................. 5-15
Oil Filter Element Installation (For 3110A or 3112A Oil Filter Housing) .............................. 5-15
Filter Element Replacement (Duplex Oil Filter Assembly) .............................................................. 5-16
Removal ........................................................................................................................... 5-16
Installation ....................................................................................................................... 5-17
Filter Element Replacement (Dual Oil Filter Assembly) .................................................................. 5-17
Switching Oil Filters For Maintenance ................................................................................ 5-18
Drain Oil From Isolated Oil Filter ........................................................................................ 5-19
Oil Filter Element Removal (For 3111A Oil Filter Housing) ................................................. 5-19
Oil Filter Element Removal (For 3110A or 3112A Oil Filter Housing) .................................. 5-20
Oil Filter Element Installation (For 3111A Oil Filter Housing) ............................................. 5-20
Oil Filter Element Installation (For 3110A or 3112A Oil Filter Housing) .............................. 5-20
Oil Separator Coalescing Filter Replacement ................................................................................. 5-21
Removal ........................................................................................................................... 5-21
Installation ....................................................................................................................... 5-21
Oil Separator Heater Cartridge Replacement ................................................................................ 5-23
Parts Required .................................................................................................................. 5-23
Removal ........................................................................................................................... 5-23
Installation ....................................................................................................................... 5-23
Drive Coupling Hub (Form-Flex BPU) Installation ...................................................................................... 5-24
Straight Bore Hubs ....................................................................................................................... 5-24
Tapered Bore Hubs ....................................................................................................................... 5-24
Drive Center Member Installation and Alignment ..................................................................................... 5-25
Drive Coupling Hub (Form-Flex BPU) and Center Member Removal .......................................................... 5-27
Drive Coupling (Type C Sure-Flex) Replacement ....................................................................................... 5-27
Removal ....................................................................................................................................... 5-27
Installation ................................................................................................................................... 5-28
Coupling Guard Replacement ................................................................................................................... 5-29
Removal ....................................................................................................................................... 5-29
Installation ................................................................................................................................... 5-29
Compressor Replacement ........................................................................................................................ 5-30
Removal ....................................................................................................................................... 5-30
Installation ................................................................................................................................... 5-31
Bare Shaft Compressor Lifting Points and Weights ................................................................................... 5-31
Bare Shaft Compressor Center of Gravity (Models 291-2101) ................................................................... 5-33
Bare Shaft Compressor Center of Gravity (Models 2401-3001) ................................................................. 5-34
Compressor Inspection ............................................................................................................................ 5-35
Compressor Shaft Bearing Clearance Inspections ......................................................................... 5-35
Determine Maximum Applied Force.................................................................................. 5-35
Main Rotor Bearing Axial Clearance Inspection .................................................................. 5-35
Main Rotor Bearing Radial Clearance Inspection ................................................................ 5-36
VSS/VSM/VSH/VSSH • Installation, Operation and Maintenance Manual • Emerson • 35391SD
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