KRAL C Series - Page 46

12 Servicing
12.8 Replacing the screw set (outer bearing)
3
2
5
6
11
8
9
1
4
4. Clean the fitting surfaces carefully, position the flat gasket11 in the flange cover.
5. Size32–42,55–660,880,2250–3550: Position the edge sealing rings8 in the flange cover.
Take the recesses for the edge sealing rings into account.
6. Mount the bearing bush set9, consisting of the bearing bush and segment washer (segment
washer only for Size 32–42,55–660,880), on the shafts of the idle screws3.
6
1
4
1
4
7
18
16
16
17
17
19
16
17
7. Place the idle screws left and right of the main screw so that the fitting surfaces of the bearing
bushes contact the shaft of the main screw. Observe the alignment of the positioning pins16.
8. Attention: Ensure that the adapter sleeve18/straight pin19 is not damaged when mounting the
cartridge housing. Take the hole17 into account.
Slide the cartridge housing1 over the pre-mounted idle screws and main screw.
9. Size32–42,55–660, 880: Tighten the socket screws6 with torque.
Size851,2250 –3550: Tighten the socket screws7 with torque.
10. Mount and lightly grease the O-ring4 in the flange cover.
46
OIC 18en-GB Edition 2020-01
Operating instructions