KRAL C Series - Replacing the Screw Set (Outer Bearing); Removing the Screw Set

12 Servicing
12.8 Replacing the screw set (outer bearing)
7. Attention: Ensure that the spring ring is not damaged while mounting the seal housing. Take the
holes in the pump flange into account.
Carefully slide the seal housing with flat gasket until the pump flange stops at the main screw.
8. Remove the mounting sleeve main screwB.
9. Tighten the socket screws9 between the seal housing and pump with torque.
10. Size370–450: Insert the seal10 (Nilos ring).
11. Insert the supporting ring11 and press the ball bearing12 with mounting sleeve ball bearingC
into the seal housing and mount the circlip13.
7
6
54
1
2
3
2
3
1
7
23
22
7
3
2
24
25
12. Size32–42,55–118: Mount the supporting ring22 and circlip23 onto the main screw.
-or-
Size160–880: Mount the distance ring4, locking plate5, groove nut6 onto the main screw.
-or-
Size851,951–3550: Mount the distance sleeve24 and circlip25 onto the main screw.
13. Mount the feather key7.
F 1 2
14. Remove the main screw stop for the outer bearingF from the pump housing.
12.8 Replacing the screw set (outer bearing)
12.8.1 Removing the screw set
Personnel qualification: o Fitter
Personal protective equipment: o Work clothing
o Protective gloves
o Safety boots
Aids: o Plastic hammer
o Extractor
Requirement:
ü Cartridge pump removed
ü Shaft seal removed
1
3
5
6
2
4
1
3
2
5
4
7
1. Clamp the pump at the main screw2. Ensure that the shaft is not damaged in the process.
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OIC 18en-GB Edition 2020-01
Operating instructions