7 Servicing/Maintenance
79 of 126
Amacan K
1579.807/07-EN
Impeller fastening elements M20
230
210
914.10
260.01
550.23*
L
243
Fig. 46:
Fitting the impeller
*: On specific designs only
NOTE
For bearing brackets with tapered fit make sure that the tapered fit of impeller and
shaft is undamaged and assembled free from grease.
ü
The shaft and rolling element bearings have been properly installed.
ü
The mechanical seals have been properly installed.
1. Slide impeller 230 onto the shaft end.
2. Apply Loctite 243 as thread-locking agent to the thread of the impeller screw.
3. Screw in impeller screw 914.10 and disc 550.23 if any. Tighten with a torque
wrench. Observe the tightening torques.
Impeller fastening elements M85 × 2, M125 × 2
ü
The back pull-out unit has been placed in a horizontal position on wooden
supports. It has been secured against rolling off.
ü
The mechanical seals and keys have been properly installed.
1. Insert key 940.01.
2. Mount impeller 230 with a special impeller fitting and removal tool.
230
1
2
Fig. 47:
Special impeller fitting and removal tool
3. Screw part 2 of the special impeller fitting and removal tool into the shaft end
of the pump set.
4. Screw part 1 to fully threaded stud part 2.
