Viking Pump TSM280: Duralobe (Discontinued) - Manual (Page 52)

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Disassembly of Double Mechanical Seals.
Ensure pump is fully shutdown, refer to section 3.5.
To disassemble, reverse the above procedure using the extraction tool
supplied to aid in the removal of the seal faces, see Figs 27 and 30.
Note: If seals are being reused, Ensure that seal faces remain matched.
- Remove rotary seal faces (33) from rotors (41) using extraction tool (61).
This is achieved by inserting the extraction tool between the rotary seal
face (33) and the rotor (41) and applying a twisting action, see Fig 27. It
may be necessary to alternate from side to side to facilitate removal.
- Remove stationary seal cartridge assemblies (29,48 and 51) from the
shafts (9 and 10) by pulling off.
- Remove rotary seal face (46). This can be achieved by inserting the
extraction tool (61) through the drain/leakage detection holes in the sides
of rotorcase (40) and applying a twisting action, see fig 30. Note that this
procedure can not be applied to certain models of pumps installed with
flanged port connections. In this case, access to the rotary seal faces (46)
can be gained via the drilled holes in the top and bottom faces of the
rotorcase (40).
Note: Extreme care should be taken when carrying out these procedures
to Ensure that the seal faces are not damaged. No excessive force is
necessary if the extraction tool is used correctly.
Fig 30 Use of Extraction Tool for the removal of Seal Faces.
Insert seal extraction tool into the drain/leakage detection slots at the side of the
rotorcase and apply a twisting action to remove the seal face (item 46 see fig 29
page 47).
WARNING