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6.2 Dismantling
6.2.1 Uncouple the pump from the prime mover by removing coupling bolts,
nuts and rubber bushes.
6.2.2 Remove –
- Sealing Connections
- Priming funnel, air vent
- Grease cup/ nipples and other fittings.
6.2.3 Remove all the bolts and nuts (572, 581) holding the upper half casing &
lower half casing. Take out upper half casing (122) slowly by tightening
the release bolts and after removing taper pins.
Upper half casing should be removed slowly so that impellers and other
parts are not damaged. By removing upper half casing, the complete
rotating unit is exposed for inspection and repairs.
6.2.4 Loosen the bolts and nuts (573) holding the bearing cap to the lower half
casing (122). Remove the bearing caps.
6.2.5 Lift the rotating unit slowly after slinging it in correct fashion so that none
of the parts are damaged. Keep the rotating unit in clean dry place for
further dismantling.
6.2.6 Now start dismantling from driving end side. Loosen the coupling nut
(332) if provided.
6.2.7 Take out flexible coupling, pump half (390) with help of a puller. Remove
the coupling key (321).
6.2.8 Take out coupling spacer (195) if provided.
6.2.9 Loosen the bolts (631) holding bearing cover (270) to the bearing
cartridge (241).
6.2.10 Remove the bearing cartridge driving end (241) pull out the bearing driving
end (260.1) with the help of puller.
6.2.11 Remove bearing cover (270) and water deflector (236).
6.2.12 Take out gland (223). Remove the st. box packing.
6.2.13 Remove the st. box bush (350) if provided. Also take out casing ring
(190).
6.2.14 Take out the shaft sleeve DE (317.1) (only for 65 DSM-315 M, DSM-5,
DSM-6 and DSM 150-45 pumps). Remove the ‘O’ ring (522).
6.2.15 Remove the shaft sleeve under st. box (310).
6.3 Start dismantling from non-driving end
6.3.1 Remove the bearing cartridge (253) NDE.
6.3.2 Loosen the bearing lock nut (336) bearing nut (335).
6.3.3 Remove bolts (631) for bearing cover (271) and take out the ver.
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