Johnson Pump Top Wing Series - Page 4

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)