6.3 Dismantling Procedure for mechanical seal pumps.
6.3.1 Drain the pump by opening air vent valve & drain plugs.
6.3.2 Remove all the screws of bearing cap (274) tightened with lower half casing (123).
6.3.3 Loose the DE & NDE side mechanical seal cover (204) which are tightened with
Lower & upper half casing with studs & nuts.
6.3.4 Remove all the nuts and bolts and locating pin of the upper and lower casing
flange.
6.3.5 Insert a screw driver or peg bar into the slot between the two halves and separate
two halves, lifting of the upper half casing (122).
6.3.6 Remove the rotating unit assembly from lower half casing (123) in such a way that
impeller should not be damage.
6.1.7 Remove all the screws of bearing cartridge (241,253) tightened with casing &
bearing cover (271) and dismantle the bearing cartridge.
6.1.8 Remove the bearing lock nut (336) and lock washer (415) from the NDE side of the
shaft. By using bearing puller remove the bearings from the shaft. Remove the driving
end bearing in the same manner.
6.1.9 Remove shoulder rings (199) & bearing cover (271) in the same manner. Remove
the liquid deflectors (236). Then remove shaft sleeve nut (334), wear ring (190), shaft
sleeve (310).
6.3.10 Remove mechanical seal cover (231) & its spring & rotary face very carefully.
Loose the grub screws of backing collar of mechanical seal & remove it from shaft sleeve
(310).
6.3.11 Remove the 1
st
stage & 2
nd
stage impeller (158), impeller key (320) & interstage
(204) ring.
To Next Page
Loading...
Need help?
General
