KSB 4STQ Series User Manual

5 Installation/Dismantling
26 of 44
4STQ
2580.821/04-EN
5.4 Removing the mechanical seal
5.4.1 Removing the C022/025M1-4STQ and C033/033M1-4STQ double cartridge seals
500
101-47
914.52
433
Fig.14: Removing the double cartridge seal
ü The back pull-out unit and impeller have been removed.
1. Fix discharge cover 163 to bearing housing 350 using suitable bolts/screws and
washers.
2. Remove O-ring 412.58 from the shaft.
3. Slide puller 101-47 over the shoulder of mechanical seal 433 and lock with ring
500.
4. Press forcing screw 914.52 against shaft 210 and pull mechanical seal 433 out of
discharge cover 163.
5.4.2 Removing the C033/055M1-4STQ double cartridge seal
The rules of sound engineering practice and the pump manufacturer's general
provisions apply. Tidiness and cleanliness are essential for proper execution of the
installation work.
ü The operating manual for the pump is on hand.
ü The back pull-out unit of the pump has been removed from the pump casing and
safely positioned and secured in a horizontal position.
ü The impeller and keys have been removed from the pump shaft.
1. Remove circlip932.53 from discharge cover163.
2. Use the radial groove in shaft sleeve 523 to remove the mechanical seal
cartridge. Remove evenly, using a suitable extraction tool.
3. Carefully pull the complete cartridge seal off the shaft.
4. Clean the pump components in the area of the mechanical seal, pump shaft 210,
discharge cover 163 and bearing bracket 330. Check for any damage.
Further dismantling of the mechanical seal is carried out at KSB.
5.4.3 Removing the C055/065M1-4STQT double cartridge seal
The rules of sound engineering practice and the pump manufacturer's general
provisions apply. Tidiness and cleanliness are essential for proper execution of the
installation work.
ü The operating manual for the pump is available.
ü The back pull-out unit of the pump has been removed from the pump casing and
safely positioned and secured in a horizontal position.
ü The impeller and keys have been removed from the pump shaft.
1. Remove circlip932.53 from discharge cover163.
2. Use the radial groove in shaft sleeve 523 to remove the mechanical seal
cartridge. Remove evenly and carefully, using a suitable extraction tool.
3. Carefully pull the complete cartridge mechanical seal off the shaft.

KSB 4STQ Series Specifications

General

Brand	KSB
Model	4STQ Series
Category	Food Saver
Language	English