Flowserve DMX - Manual (Page 37)

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09
Page 37 of 60
The use of a puller will be required to remove it from
the shaft.
6.6.4
Thrust bearing removal
a) Remove cap-screws [6570] from bearing end
cover [3266]. Remove end cover and shims
[3126]. Tag and record thickness of shims for
reassembly.
If pump is equipped with shaft driven main oil
pump, "Driver Half" and "Rubber Spider" of
coupling should be removed and wired to the
support head.
b) Loosen set-screw [6570] in pump side flinger
[2540] and slide it back on the shaft towards the
Seal Chamber.
c) Remove cap-screws [6570] and dowel pins
[6810] from bearing housing [3200]. Rig eyebolt
[6820] in bearing housing cap to an overhead
hoist and lift bearing cap from bearing housing
and place on blocking on floor.
d) The inboard and outboard thrust bearing
assembly [3032] can now be removed from the
bearing housing [3200]. Tag assemblies to
ensure they will be returned to their original
position. Refer to thrust bearing drawing and
instructions.
e) Remove cap screws and dowel pins from bearing
lining [3020].
f) Remove upper half of bearing lining. Raise shaft
slightly and roll out the lower half lining.
g) Remove cap-screws [6570] and dowel pins
[6810] holding bearing housing [3200] to casing
and remove bearing housing and place on
blocking on floor.
h) Loosen set screws [6570] in lock nut [3713].
Remove lock nut and bearing seal ring [4020].
i) Remove thrust collar [3610] and key [6700].
It may be necessary to apply heat to thrust
collar to remove it. Do not allow temperature to rise
above 104 °C (220 °F) when heating thrust collar.
Temperature can be checked with "tempil stick".
j) Remove thrust bearing shims [3126]. Record
thickness of shims and tie together to prevent
shims. Remove flinger [2540] and bearing seal
ring [4020].
6.6.5
Plain bearing removal
a) Loosen Allen set-screw [6570] from coupling side
flinger [2540] and remove flinger from end of
shaft.
b) Loosen Allen set-screw [6570] from pump-side
flinger [2540] and slide flinger back on shaft
towards the mechanical seal.
c) Remove cap-screws [6570] and dowel pins
[6810] from bearing housing [3200]. Rig eyebolt
[6820] in bearing cap to an overhead hoist and lift
bearing cap from bearing housing and place on
blocking on the floor.
d) Install two eyebolts in diagonally opposite corners
of bearing housing [3200] and rig to an overhead
hoist. Remove cap-screws [6570] and dowel pins
[6810] which secure bearing housing to casing.
Using the overhead hoist, lower and remove
bearing housing [3200] away from casing and
place on blocking on the floor.
e) Remove cap screws [6570] and dowel pins
[6810] from bearing lining [3020]. Remove upper
half of bearing lining. Raise shaft slightly and roll
out the lower half lining
6.6.6
Rotor removal
a) Remove cap-nuts [6580] and washers [2905]
holding the upper half casing to the lower half.
Remove dowel pins [6810]. Using jack-screws
[6570] in lower half casing, break the seal
between upper half and lower half casing. Rig
upper half casing to overhead hoist using the two
cast lifting lugs.
The cast lifting lugs provided on upper half
casing are for lifting upper half casing only. Do
not lift pump from these lugs.
Carefully lift upper half casing and place on
boards to protect machine surfaces.
b) Rig slings around shaft close to impellers. Rig the
slings to an overhead hoist. Carefully lift rotor
[2000] from lower casing and place on horses for
further dismantling.
Casing wearing rings [1500], channel rings
[1500], throttle bushing [1630], center bushing [1600]
, seal chamber bushings [4132] and crossover