Removing The Mechanical Seal - KSB Amacan K Installation & Operating Manual

7 Servicing/Maintenance
Impeller fastening elements M85 × 2, M125 × 2
940.01
230
412.06
931.02
901.87
Fig. 32: Impeller fastening elements
1. Unscrew impeller hub cap 260.01 using a special wrench (right-hand thread).
2. Remove O-ring 412.06.
3. Unbend lock washer 931.02, undo hexagon head bolt 901.87 and remove them
together with disc 550.87.
4. Pull off impeller 230 with a special impeller fitting and removal tool.
1
2
3
Fig. 33: Special impeller fitting and removal tool
5. Screw hexagon head bolt 1 into the shaft end to prevent any damage to the
shaft thread.
6. Screw part 2 into the impeller.
7. Screw fully threaded stud 3 into part 2 and pull off the impeller.
8. Remove key 940.01.

7.6.5 Removing the mechanical seal

7.6.5.1 Removing the impeller-end mechanical seal
ü The back pull-out unit has been securely placed in a horizontal position on
wooden supports.
1. Pull the rotating assembly of mechanical seal 433.02 and spacer sleeve 525.04 (if
applicable) off shaft 210.
2. Remove discharge cover 163 from bearing housing 350.
3. Press the stationary seat of mechanical seal 433.02 out of discharge cover 163.
NOTE
To protect the mechanical seal against damage when pulling it off the shaft placing
a foil (no thicker than 0.3 mm) around the free shaft stub is recommended.
Amacan K
550.87 260.01
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