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Chapter 9
Visco
Twin_002 EN
Page 9-10
9.4.2 Shaft seal (single-acting with quench)
Disassembly:
1.
Drain the quench fluid. Disassemble the auxiliary systems.
2.
Disassemble cover 1012.
3.
Disassemble pump housing 1033.
4.
Disassemble both screw spindles.
5.
Pull down inboard rotor holders 80 from the shaft. Inserted in it are seal face 40, drive pins
210 as well as O-ring 90, 130 and 220.
6.
Loosen screws 2259 of seal housing 1029 and remove it from the shafts along with the
remaining seals.
7.
Remove the inboard stators 11 from the seal housing. Remove O-rings 140 located in the
front section of the seal housing.
8.
Press out the shaft seals 2272 from seal housing.
9.
Using circlip pliers grasp and remove the retaining rings 200 on the rear of the seal housing.
In addition, remove spacers 190, backup rings 180 as well as wave rings 50 in backward
direction.
10.
Remove drive disc 150 along with drive pins 210 from the seal housing.
11.
Loosen sets screws 1064 in shaft sleeves and pull off of from shafts.
Remove Centrifugal disk 2275. Renew shaft seal 2272 and the centrifugal disk 2274.
Fig. 9.5a
Manual ViscoTwin 104-xx 3A