Flowserve Mark 3 - Manual (Page 31)

USER INSTRUCTIONS MARK 3 High Silicon Iron ENGLISH 71569249 09-04
®
Figure 6-8
Figure 6-9
u) If the pump has lip seals, a deflector [2540] will
be present. Remove it.
v) Loosen the three set screws [6570.3] on the
bearing carrier [3240]. The bearing carrier must be
completely unscrewed from the bearing housing.
Do not pry against the shaft.
Mark 3A and ANSI 3A design
The face of the bearing carrier has three square
lugs that protrude from the surface. The bearing
carrier is turned by using an open end wrench on
one of the square lugs as shown in figure 6-10.
Mark 3 design
The bearing carrier is turned by using a strap
wrench, with the strap located around the outside
diameter of the carrier face.
Figure 6-10
w) Because the O-rings [4610.2] will cause some
resistance in removing the bearing carrier assembly
from the housing, hold the bearing carrier flange
firmly and with slight rotation, pull it out of the
bearing housing. The bearing carrier assembly with
the shaft and bearings should come free. This unit
will appear as shown in figure 6-11. Further
disassembly is not required unless the bearings are
to be replaced.
Figure 6-11
x) Remove the snap ring [2530.1] (see figure 6-12)
Figure 6-12
Pumps equipped with duplex angular
contact bearings use a bearing retainer [2530.2]
instead of the snap ring. Remove the carrier from
the bearing.
y) The bearing locknut [3712] and lockwasher
[6541.1] may now be removed from the shaft
[2100]. Discard the lockwasher.
z) An arbor or hydraulic press may be used to
remove the bearings [3011 and 3012] from the
shaft. It is extremely important to apply even
pressure to the inner bearing race only. Never
apply pressure to the outer race as this exerts
excess load on the balls and causes damage.
Applying pressure to the outer
race could permanently damage the bearings.
aa) The Mark 3A design has an optional oil slinger
[2540] located between the bearings. If present,
inspect it for damage or looseness. Remove if it
bb) The bearing housing [3200] must be separated from
the bearing housing adapter [1340]. The adapter O-
ring [4610.1] should be discarded.
Mark 3A and ANSI 3A design
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