1 Supplementary Operating Manual
5 of 12
Double Mechanical Seals
6.
On models with a clamped casing cover:
Undo bolt 901.98 (long-coupled
design) or screw 914.22 (close-coupled design) and remove. Separate casing
cover 161 from the locating fit of bearing bracket 330 or from the locating fit of
drive lantern 341, as applicable. Pull it off shaft 210.
On models with a bolted casing cover:
Undo hexagon nut 920.15. Use forcing
screws 901.31 to separate casing cover 161 from bearing bracket 330 or drive
lantern 341. Pull it off shaft 210.
7.
Pull shaft sleeve 523 with the two rotating assemblies of mechanical seals
433.01/433.02 off shaft 210.
8.
Remove seal cover 471 with the mating ring of outboard mechanical seal 433.02
from shaft 210.
9.
Remove circlip 932.05 and the ring from casing cover 161.
10.
Remove the stationary mating ring of mechanical seal 433.01 from the casing
cover.
11.
Remove the stationary mating ring of mechanical seal 433.02 from seal cover
471.
12.
Loosen and remove the rotating assembly of mechanical seals 433.01 and 433.02
from shaft sleeve 523.
13.
Remove and dispose of gasket 400.15 (for SU 25: joint ring 411.15) and gasket
400.75.
1.4 Installing the shaft seal
Installing the
mechanical seal
The following rules must be observed when installing the mechanical seal:
▪
Work cleanly and accurately.
▪
Only remove the protective wrapping of the contact faces immediately before
installation takes place.
▪
Prevent any damage to the sealing surfaces or O-rings.
Fig. 1:
Adjusting dimension A
Table 4:
Adjusting dimension
Bearing bracket
Adjusting dimension A
WS25
53,5
WS35
63
ü
Observe / carry out the notes and steps given in operating manual 2753.81/.82.
ü
The bearing assembly as well as the individual parts have been placed in a clean
and level assembly area.
ü
All dismantled parts have been cleaned and checked for wear.
ü
Any damaged or worn parts have been replaced by original spare parts.
ü
The sealing surfaces have been cleaned.
1.
Clean shaft sleeve 523 and the mating ring location in casing cover 161 and seal
cover 471. Gently remove any deposits. If score marks or scratches are still
visible, replace the affected parts.
