7 Servicing/Maintenance
80 of 126
Amacan K
1579.807/07-EN
U
G
1
0
4
5
2
9
8
940.01
230
412.06
931.02
901.87
550.87 260.01
Fig. 48:
Impeller fastening elements
5. Screw in hexagon head bolt 901.87 with disc 550.87. Bend over lock washer
931.02.
6. Insert O-ring 412.06.
7. Screw in impeller hub cap 260.01 using a special wrench (right-hand thread).
7.7.6 Installing the back pull-out unit
NOTE
After casing wear rings with a radial clearance have been fitted in pump casing 101,
they have the required inside diameter and do not need to be readjusted.
920.01
902.01
101
502
571
350
Fig. 49:
Installing the back pull-out unit
ü
Pump casing 101 has been positioned on a wooden support on a level and solid
surface.
ü
Suitable lifting equipment is on hand.
ü
The back pull-out unit has been completely pre-assembled.
1. Use a rubber mallet to insert casing wear ring 502 into pump casing 101 as far as
it will go.
2. Attach the lifting equipment to bail 571 and carefully pull the back pull-out unit
upright.
3. Insert the complete back pull-out unit into pump casing 101.
4. Evenly tighten screwed connection 920.01 between pump casing and bearing
housing 350.
7.7.7 Leak testing
After reassembly, the mechanical seal area (lubricant reservoir and leakage chamber)
and the motor must be tested for leakage.
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