KSB CTN - Dismantling the Hydraulic System; Removing the Pipe Assembly and Shaft Assembly

7 Servicing/Maintenance
46 of 76
CTN / CTN-H
7.4.5.2 Dismantling the gland packing
ü The notes and steps stated in (ðSection7.4.1,Page43) bis
(ðSection7.4.4,Page45) have been observed/carried out.
1. Unscrew hexagon nuts 920.09.
Remove gland follower 452.02.
2. Remove stuffing box ring 454.02, packing ring 461.02 and lantern ring 458.02 (if
any) from stuffing box housing 451.02.
Dismantle stuffing box housing 451.02.
7.4.6 Dismantling the hydraulic system
Single-stage pumps ü The notes and steps stated in (ðSection7.4.1,Page43) bis
(ðSection7.4.5,Page45) have been observed/carried out.
1. Undo bolts 901.28 and nuts 920.28 (and additional studs 902.28 and hexagon
nuts 920.28, if applicable).
Remove suction cover 162 with joint ring 411.58.
Remove casing wear ring 502.01 (if required).
2. Unbend lockwasher 931.02 and unscrew cap nut 920.22.
Pull impeller 230.01 off the shaft.
Remove key 940.01.
3. Undo bolts 901.29 and nuts 920.29.
Remove volute casing 102 with gasket 400.16.
Remove casing wear ring 502.02 (if required).
Two-stage pumps ü The notes and steps stated in (ðSection7.4.1,Page43) bis
(ðSection7.4.5,Page45) have been observed/carried out.
1. Undo bolts 901.27 and nuts 920.27 (and additional studs 902.27 and hexagon
nuts 920.27, if applicable).
Remove suction cover 162 with joint ring 411.58.
Remove casing wear ring 502.01 (if required).
2. Unbend lockwasher 931.02 and unscrew cap nut 920.22.
Pull impeller 230.02 off the shaft.
Remove key 940.03.
3. Undo bolts 901.28 and nuts 920.28 (and additional studs 902.27 and hexagon
nuts 920.27, if applicable).
Remove stage casing 108 with joint ring 411.57.
Remove casing wear rings 502.03/.04 (if required).
4. Remove bearing bush 545.02 (if applicable and required).
Pull spacer sleeve 525 (or bearing sleeve 529.02, if applicable) and impeller
230.01 off the shaft.
Remove key 940.01.
5. Undo bolts 901.29 and nuts 920.29.
Remove volute casing 102 with gasket 400.16.
Remove casing wear ring 502.02 (if required).
7.4.7 Removing the pipe assembly and shaft assembly
ü The notes and steps stated in (ðSection7.4.1,Page43) bis
(ðSection7.4.6,Page46) have been observed/carried out.
ü On heatable designs (CTN-H), the pipes 710.23/.24/.25/.26 with pipe unions
731.18/.37/.38/.39/.40/.41 have been dismantled.
1. Undo bolts 901.32 and nuts 920.32.
Remove pipe assembly 71-9.01 with gasket 400.18.
2. Remove bearing housing 350.04 with bearing bush 545.03, grooved pin 561.22
and O-ring 412.10 (if applicable) from the recess in the pipe assembly (not for
CTN-H).
3. If pipe assembly 71-9.02 is fitted, repeat steps 1 to 2.
4. If pipe assembly 71-9.03 is fitted, repeat steps 1 to 2.