KGE/EN (1711) 6.5 Disassembly and assembly 35
KGE
7.3 Replacement of mechanical seal
7.3.1 Disassembly of mechanical seal
1 Follow steps 1 to 4 of the impeller dismantling procedure.
2 Now remove the rotating part of the shaft seal (0310) fitted to the shaft.
3 Pull the intermediate cover (0140 / 0120) from the bearing bracket.
4 Push the counterseal ring (0320) of the shaft seal from the intermediate cover.
5 Replace the gaskets (0240 / 0440).
7.3.2 Assembly of single mechanical seal
Follow steps 4 to 1 of the disassembly instructions. Please ensure to apply few drops of
SAE20 oil between the seal faces and also on outside surface of the ‘L’ / ‘T’ - or Seal-
ring (bearing bracket group 0 and 00:) O-ring.
7.4 Replacement of the bearings
The ball bearings are sealed and grease-packed, so they are lubricated for life.
7.4.1 Disassembly of the ball bearings
1 Disassemble the impeller and shaft seal. Please refer to the disassembly instructions.
2 Disassemble the ball bearing cover (1110 / 2330), the inner circlip and the laminated
seal (second bearing cover) or BA-ring.
3 Strike the shaft on impeller side such that the shaft and bearings are released from
the bearing bracket.
4 Remove the ball bearing along the shaft end side, using a coupling puller.
5 Remove shoulder rings out of the bearing bracket (: bearing bracket 1 & 2: from
the shaft)
6 Clean the shaft properly on impeller side, particularly where the shaft seal is
positioned, then remove the ball bearing on impeller side.
Figure 13: Mechanical seal disassembly bearing bracket group 0 and 00
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