Goulds Pumps 3420 - IOM - Manual (Page 47)

SX/MX Group (Figs. 29-33)
1. Remove the eight bearing housing to casing
capscrews (372U).
2. Place the sling in position, refer to Fig. 33. Adjust the
sling tension to take weight off of the rotating
element. Make sure all stationary parts of the rotating
element are loose before the rotating element is
removed. It is desirable to rotate the casing wearing
rings (127) 180
° to disengage the tongue and groove
locks.
3. Remove the element and place it on padded supports.
4. Slide the casing rings off the rotating element.
5. Scribe the coupling position on the shaft (122) and
remove the coupling and the coupling key (400).
6. Remove eight bearing housing to bearing end cover
capscrews (371C and 371D).
7. Remove the outboard (thrust) bearing housing (134)
by sliding it over the thrust bearings (112).
8. Remove the coupling end bearing housing (166) and
labyrinth seal (332A) together by sliding them over
the radial bearing (168) and off the shaft.
9. Press the labyrinth seal out of the bearing housing
from the inside with a suitablly sized arbor.
10. Straighten the tangs in the bearing lockwasher (382)
and remove the bearing locknut (136) and lockwasher
from the outboard (thrust) end of the shaft.
11. Remove the thrust and radial bearings using a bearing
puller per the instructions in the Preventive
Maintenance section, (Figures 25 and 26). Save the
bearings for inspection.
12. Slide the bearing end covers (109) and labyrinth seals
(333A) off of the shaft. Press the labyrinth seals out
of the end covers from the inside using a suitably
sized arbor.
3420 IOM 8/09
43
Fig. 33
6