Viking Pump TSM280: Duralobe (Discontinued) - Manual (Page 51)

Page : 49
4.3.4 Double Mechanical Seal
(for high pressure flush) see Fig 29.
Fig 29
Read the General Procedures to prepare for seal installation, refer to section 4.3.1.
Before assembly Ensure that all seal components are clean and grease free.
- During Pump assembly Install housings (47) to rotorcase securing with screws
(26) tightening to correct torque, refer to section 5.2. Ensure the gaskets or o-
rings (27) are in place before tightening screws (26).
- Install o-rings (45) to seal faces (46) and then install to shafts (items 9 and 10
see fig 5.6) ensuring engagement of pins with slots in shafts (items 9 and 10
see fig 5.6).
- Install o-rings (49 and 50) to seal cartridges (48 and 51).
- Install seal cartridge assemblies (comprising parts 29, 48, 49, 50 and 51) on
shafts (9 and 10 see fig 5.6) and push in until outboard seal faces (46) and
(48) come together. Take care not to damage the o-rings (49) and (50).
- You should now be able to feel the resistance being generated by the wave
springs (29).
- Install o-rings (32) into the rotors (item 41 see fig 5.6). Install rotary faces (33)
into rotors (item 41 see fig 5.6) ensuring that the drive lugs and the drive slots
engage. Make sure the o-rings (32) are located correctly and that the seal
faces (33) are sitting squarely in the rotors