Sulzer J 205, Руководство по ремонту

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6 Change of mechanical seal unit on J 205, J 405 / Mechanical seals J 604
Dismantling
Clean the shaft end.
J 205 - J 405: Unscrew the screws holding the me-
chanical seal unit. Use the same screws in the alterna-
tive holes on the seal unit to carefully pull the seal unit
out from the shaft. Check that there are no burrs on the
shaft. If wear plate must be replaced, continue on com-
plete pump overhaul 7.1. (Figure 11)
J 604: Release pressure on spring and lift off rotating
part of primary seal. Note that he stationary ring is still
in the oil casing cover. Unscrew inner and outer nuts
that secures both the rubberized wear plate and the oil
casing cover and remove them. Dismantle the station-
ary ring of the primary seal from the oil casing cover.
Remove circlip under the secondary seal. Pull out rotat-
ing part on secondary seal. Remove the stationary ring
from the oil casing. (Figure 12)
Assembly
J 205 - J 405: Grease the shaft end. Mount the me-
chanical seal unit carefully with new and well greased
o-rings and tighten it firmly with screws.
J 604: Mount the secondary seal, first the stationary
ring on the oil casing and then the rotating ring and
circlip, by using the special tool. Mount the oil casing
cover and then put the primary seal stationary ring in
place and fix it with the retaining ring (pos 82 + 85 in
spare part list). Push on the rotating part of the primary
seal by using a special tool, see section special tools.
Mount the rubberized wear plate and tighten inner and
outer nuts.
For assembly of pump proceed directly to section 9.
Note!
Never run the motor without having the impeller mount -
ed. This can cause damage to o-rings in seal.
Figure 11: Dismantling mechanical seal unit (J 205, J 405)
Figure 12: Dismantling mechanical seals (J 604)