Goulds Pumps 3409 - IOM - Manual (Page 51)

VERTICAL UNITS (HALF AND FULL PEDESTAL)
UPPER CASING HALF REMOVAL
NOTE: If only the upper half casing is to be removed for
inspection of the rotating element, it will not be necessary
to remove the line shafting
or motor.
1. Do not loosen bolts (372U) holding bearing housing (134)
in casing until you are ready to remove rotating element
from casing if necessary.
s
! WARNING
Injury may result due to rotating element falling out of
lower half casing if the above procedure is not followed.
Failure to follow these instructions could result in property
damage, severe personal injury, or death.
2. Remove the larger of the two pipe plugs from the top of the
casing upper half and install an 18" to 24" solid bar
threaded at one end into the exposed tapped hole. If a
treaded bar is not available, it is permissible to use standard
pipe.
NOTE: This bar will be used to stabilize upper half
during disassembly of casing upper half. (See Fig. 33)
3. Disconnect the seal water lines at the stuff boxes and
remove gland bolts.
4. Remove dowel pins and all parting line bolts except for two
upper most and two lower most (See Fig. 34) Install
alignment rods (see Fig. 33) through upper half and into
tapped bottom half, one on suction side and one on
discharge side above horizontal centerline of casing.
NOTE: An alignment rod is a threaded rod that screws into
bottom half of casing and is approximately 2" longer than one
half the impeller diameter. This is to prevent the top half from
falling down on impeller and also helps with alignment while
installing upper half. If not supplied with pump, they can be
made from threaded rod.
5. Sling around casing upper half ears using nylon sling,
pulling slings taught so it is not possible for slings to
slip off (See Fig. 35).
6. Remove two lower most bolts and then one of the two
upper most bolts.
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CAUTION
Maintain downward pressure on the stabilizing rod
during this step.
7. While maintaining a downward pressure on the
stabilizer bar, unloosen the remaining upper most bolt.
3409 IOM 11/04
51
STABILIZER
BAR
Fig. 33
Fig. 34
Fig. 35
6