Goulds Pumps 4550 - IOM - Manual (Page 27)

DISASSEMBLY & REASSEMBLY
DISASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Disassembly - Vertical 4550 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Inspection And Parts Replacement Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cross Sectional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Materials of Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Typical Vertical Pump Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
DISASSEMBLY
s
! WARNING
Lockout driver power ro prevent accidental start up
and physical injury.
s
! WARNING
Operator must be aware of pump and safety
precautions to prevent physical injury.
s
! WARNING
Pump components can be heavy. Proper methods of
lifting must be employed to avoid physical injury
and/or equipment damage. Steel toed shoes must he
worn at all times.
DISASSEMBLY - VERTICAL 4550
SERIES
1. Shut off motor. Shut off all valves controlling flow
of liquid from the pump. Disconnect the power to the
motor.
2. Disconnect discharge pipe and flush piping.
3. Unbolt motor and remove from motor support.
4. Remove the pump unit from the pit unless the pit can
be drained and the pump can be worked on from the
pit.
5. When the pump is lying in the horizontal position,
the pump column and shaft should be supported to
remove any bending stress from the shaft.
6. Disconnect discharge pipe flange at the pump casing.
7. Remove casing bolts (370) and remove casing (100)
from cover (180).
8. Fix the pump shaft at the coupling and remove the
impeller (101) by turning the impeller in a
counterclockwise (CCW) direction facing the
impeller. A strap wrench or similar device may be
required to disengage the screw threads. Remove the
sleeve cap and O-ring if the pump is so equipped.
9A. Shaft removal for sizes: 1x1.5-6, 1.5x3-6, 2x3-6,
1x1.5-8, 1.5x3-8, 2x3-8, 3x4-8, 1.5x3-10, 2x3-10,
3x4-10, 4x4-10.
a) Remove coupling from the pump shaft and
remove slinger and bearing snap ring (496).
b) Slide pump shaft (126) up through the column
and pedestal. If resistance is encountered, tap on
the impeller end with a soft mallet, or use wood
as a buffer.
$
CAUTION
Be careful not to damage screw threads at the
impeller end.
c) Remove set screw.
d) Loosen lock screw in the threaded collar (283A)
and unscrew from shaft.
e) Slide bearing holder and bearing off shaft. If
bearing (197B) is to be replaced, it must be
pressed off the bearing holder (213).
f) Unscrew the shaft sleeve if the pump is so
equipped. Care must be taken not to mar or
scratch the shaft in removal or handling.
9B) Shaft removal for sizes: 4x6-10, 3x4-13, 6x8-13,
2x3-13, 4x6-13, 8x10-15.
a) Remove coupling and outer screws.
4550 IOM 5/08
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