Flowserve M-series PolyChem - Manual (Page 43)

USER INSTRUCTIONS PolyChem M-SERIES ENGLISH 71569218 07-11
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Page 43 of 60
®
6.7.6.1 Long-coupled PolyChem M-series
pumps
Figure 6-24
This procedure is necessary if the outer
magnet assembly, anti-friction bearings or oil seals
must be replaced. See Figure 5-5 for
recommendations on ball bearing relubrication
intervals.
a)
Mount the power end to the work bench.
b) Drain the oil in the bearing housing by removing
the bearing housing drain plug [6569.1]. Put the
bearing housing drain plug back into place after
the bearing housing is drained.
c) Remove the Trico oiler/site gage [3855] (Figure 6-
25) and oil level tag (Figure 6-26) from the bearing
housing.
Figure 6-25
Figure 6-26
d) Mount the drive shaft/coupling key [6700] and a
Flowserve impeller wrench onto the shaft.
e) Remove reverse rotation screw [6570.5] with an
allen wrench. The threads are right hand.
f) Unscrew the outer magnet/flange assembly
[0230] from the drive shaft [2100.2]. With the
impeller wrench handle pointing to the right when
viewed from the magnet side of the bearing
housing [3200], grasp the magnet firmly. Spin it
rapidly in a counterclockwise direction so that the
wrench handle makes a solid impact with the
work surface to the left of the housing. After
several sharp raps, the outer magnet/flange
assembly should be free and easily removed. It
is recommended that the magnet assemblies be
stored in plastic bags to avoid the necessity to
clean later.
g) Remove the three (3) bearing cover fasteners
[6570.3] and bearing cover [3260]. Remove the
bearing cover/bearing housing O-ring [4610.9]
and discard. Pull the drive shaft and bearing
assembly out of the bearing housing in one
straight motion. Avoid cocking the assembly in
the housing. Remove the wavy washer [4260].
h) If lip seals [4310.1] and [4310.2] (see Figure 6-
27) are used, they should be removed from the
bearing cover [3260] and bearing housing [3200]
and discarded.
Figure 6-27
i)
If bearing isolators are removed from either the
bearing cover [3260] or bearing housing [3200]
they must not be reused, discard appropriately.
j) If necessary, remove the bearing housing foot
[3134] by unscrewing the footpiece fastener
[6570.4] from the bearing housing. A shim [3126]
may also be present.
k) If the ball bearings [3011] need to be replaced,
remove the bearings from the drive shaft. If the
bearings are to be replaced and the drive shaft
reused, extra care should be taken so as not to
damage the drive shaft. Remove the bearings
with a bearing puller. Even pressure should be
applied. It is recommended that the bearings not
be reused if they are removed from the drive
shaft.
Bearing
Cover
[3260] Bearing Housing
[3200]
Outer Magnet
[0230]
Shaft [2100.2]
& Bearings
[3011]
Washer
[4260]