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6.3.4 Remove the casing ring NDE (191). Water deflector (236), Glands (229)
and lantern ring (227).
6.3.5 Take out open shaft sleeve (317.2) and ‘O’ ring in case of 65 DSM 315M,
DSM-5, DSM-6 & DSM 150-45 unscrew or remove the shaft sleeve NDE
side (311).
6.3.6 Take out impellers (157) and (158). Before removing the impellers put the
mark of first stage and second stage impellers so that while re-assembling
the impellers may not be interchanged.
6.3.7 Remove the impeller key (320). Take out the interstage rin (204). In case
of (DSM-5B, DSM-6 & DSM 150-45, remove interstage diaphragm (462)
alongwith interstage bush).
6.4 Reassembling
Before reassembling, all parts are to be cleaned including upper half &
lower half casings. Bearings are to be cleaned with Kerosene. Change
packing and ‘O’ rings, if any.
6.4.1 Put the impeller key (320) in the keyways provided on the shaft. Fix the
impellers on the shaft with interstage ring (204/462) in between them.
First stage impeller should come towards non-driving end.
6.4.2 Put the shaft sleeves (310, 311) and (317.1 & 317.2) with ‘O’ rings for
65 DSM-315M, DSM-5B, DSM-6 and DSM 150-45.
6.4.3 Start the reassembly for non-driving end.
Insert the casing ring, NDE (191).
Insert the gland NDE (223) if non-split type (in case of DSM-4RM).
Put the water deflector, NDE (236).
Insert the bearing cover, NDE (271).
Press the NDE bearing on the shaft.
Tighten the bearing nuts. Put appropriate quantity of grease to the
bearings.
Fix the cartridge NDE (Except DSM 150-45). The bearing should touch
the shoulder provided on the cartridge.
Fix the bearing cover to the cartridge by tightening the screws (631).
6.4.4 Now start assembling from driving end.
Insert the casing ring DE (190).
Insert the gland DE (223) if non-split type (DSM-4RM)
Fit the water deflector (236).
Insert the bearing cover (270).
Press fit the DE bearing on the shaft.
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