Goulds Pumps 3408 - IOM - Manual (Page 59)

3408 IOM 03/99
53
VERTICAL UNITS (MODELS 200, 250, 300)
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. The rotating element must be restrained to the lower
half casing or to the pedestal by means of straps.
▲
! WARNING
Injury may result due to rotating element falling
out of lower half casing if the above procedure is
not followed.
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 threaded 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. 52)
3. Disconnect the seal water lines at the stuff boxes.
4. Remove dowel pins and all parting line bolts except
for two upper most and two lower most.
(See Fig. 53)
5. Sling around casing upper half ears using nylon fling,
pulling slings taught so it is not possible for slings to
slip off. (See Fig. 54)
6. Remove two lower most bolts and then one of the
two upper most bolts.
▲
! CAUTION
Maintain downward pressure on the stabilizing rod
(end furthest from the pump) during this step.
7. While maintaining a downward pressure on the
stabilizer bar, unloosen the remaining upper most
bolt.
▲
! WARNING
Do not remove completely at this point. Failure to
follow these instructions could result in property
damage, severe personal injury, or death.
8. Separate the upper and lower halves by use of a pry
bar between the two halves or by the use of jacking
screws if the top half is provided with tapped holes.
9. When halves separate, slide upper half away from
lower half, maintain a downward pressure on the
stabilizer bar and slowly remove completely the
remaining upper most bolt.
10. Balancing the upper half with the stabilizer bar, lower
the top half to the ground allowing the upper half to
rotate so that its main joint flange sets on the ground.
(See Fig. 55)
11. Rotating element is now ready for inspection or
removal. If element is inspected and does not need to
be removed then refer to upper half reassembly
procedures.
Fig. 52
Fig. 53
Stabilizer Bar
↓
Fig. 54
6