2
A.0500.301/314.A – IM-TW/10.00 GB (0401)
4.0 Disassembly and assembly instructions ........................................ 30
4.1
Tools to be used ................................................................................................... 30
4.2
General instructions ............................................................................................ 31
4.3
O-rings and lip seals ............................................................................................ 31
4.4
Shutdown .............................................................................................................. 31
4.5
Tightening torque [Nm] for nuts and screws .................................................... 32
4.6
Disassembly .......................................................................................................... 33
4.6.1 Pump cover and rotor removal ............................................................................ 33
4.6.2 Disassembly of seals .............................................................................................. 34
4.6.2.1
Single mechanical seal ......................................................................................... 34
4.6.2.2
Single mechanical seal with flushing .................................................................. 35
4.6.2.3
Double mechanical seal ....................................................................................... 35
4.6.2.4
Single O-ring seal ................................................................................................. 36
4.6.2.5
Double O-ring seal ............................................................................................... 36
4.6.3 Disassembly of drive assembly ............................................................................ 37
4.6.4 Disassembly of shaft arrangement ...................................................................... 38
4.6.5 Disassembly of rotor case ..................................................................................... 39
4.7
Assembly .............................................................................................................. 39
4.7.1 Pre-assembly of the rotor case ............................................................................. 39
4.7.1.1
Foot assembly ....................................................................................................... 39
4.7.1.2
Assembly of lip seals ............................................................................................ 39
4.7.2 Pre-assembly of shaft/bearing arrangement ....................................................... 39
4.7.3 Assembly of shafts in the rotor case and setting of
the tapered roller bearings ................................................................................... 41
4.7.4 Axial adjustment of the rotors ............................................................................. 42
4.7.5 Assembly of gears ................................................................................................. 43
4.7.6 Synchronization of the rotors .............................................................................. 44
4.7.6.1
Manual synchronization ...................................................................................... 44
4.7.6.2
Synchronization with special tools ..................................................................... 44
4.7.7 Assembly of end cover ......................................................................................... 45
4.7.8 Assembly of seals .................................................................................................. 46
4.7.8.1
Single mechanical seal ......................................................................................... 46
4.7.8.2
Single mechanical seal with flushing .................................................................. 47
4.7.8.3
Double mechanical seal ....................................................................................... 48
4.7.8.4
Single O-ring seal ................................................................................................. 49
4.7.8.5
Double O-ring seal ............................................................................................... 49
4.7.9 Assembly of rotors and pump cover ................................................................... 50
4.7.9.1
Assembly of rotors ............................................................................................... 50
4.7.9.2
Assembly of pump cover .................................................................................... 50
5.0 Special tools ..................................................................................... 51
5.1
General ................................................................................................................. 51
5.2
Assembly tool for lip seals .................................................................................. 52
5.3
Assembly sleeve for lip seals .............................................................................. 52
5.4
Assembly tool for lip seal ................................................................................... 53
5.5
Assembly tool for V-seal ..................................................................................... 53
5.6
Tool kit for synchronization of the pump shafts .............................................. 54
5.7
Tool for disassembly O-ring seal TW1 .............................................................. 54
A.0500.301/314.A-C – IM-TW/10.00 GB (0401)
