42 6EM Thru 18GM - 1100 Vertical Turbine Pumps
Pump Bowl Disassembly
For disassembly of the pump bowls,
proceed in accordance with steps listed
below. Select a clean area for work. Refer
to assembly drawing and parts list for part
identification.
Flanged Bowls
A. Place the bowl assembly in a horizontal
position, blocked to prevent rolling.
B. Measure and record the axial end play of
the shaft. This must be checked on
reassembly of the bowls.
C. Remove the shaft coupling(31).
D. Remove the capscrews holding the
discharge case (54) and top intermediate
bowl (55) and remove from the pump
shaft (32) and set aside for inspection. It
is not necessary to disassemble these
two bowls unless bearings are to be
replaced.
E. Remove the impeller (38) and collet (39)
from the pump shaft according to the
following procedure:
1. To remove the collet from the
impeller, pull the shaft upwards until
the impeller is in its highest position.
Using a collet driver (see Assembly
Tools at the end of this section) drive
the impeller off the collet.
2. To remove the collet, insert a
screwdriver in the collet slit and
wedge apart; the collet will slide
easily off of the shaft.
3. If impellers are to be reused, they
should be marked so that they are re-
installed in the same position.
F. Remove the capscrews holding the next
intermediate bowl (36). Remove the
intermediate bowl from the pump shaft
and set aside for inspection.
G. Repeat steps E & F until all bowls and
impellers have been removed.
H. Remove the shaft from the suction bell
(40), or suction case.
I. Measure and record the location of the
sand collar (58). Remove the sand collar
only if it is damaged and replacement is
required.
J. This pump may be fitted with wear rings
by machining the bowls (or impellers) for
a ring seat. Refer to Wear Rings section
of this manual for instructions on adding
wear rings or replacing existing rings.
Threaded Bowls
NOTE
For disassembly of the pump bowls,
proceed in accordance with steps listed
below.
A. Place the bowl assembly in a horizontal
position, blocked to prevent rolling.
B. Measure and record the axial end play of
the shaft. This must be checked on
reassembly of the bowls.
C. Remove the shaft coupling (31).
D. All bowl threads are right-hand. To
prevent the possibility of bowl threads
loosening during operation, all such
bowls are drilled and pinned at the
parting line with a 3/16" pin. Disassembly
of threaded bowls requires that the pins
be drilled out. At reassembly, the bowls
should be re-pinned for security.
E. Unscrew the discharge case (54) and
remove the discharge case from the
pump shaft and set aside for inspection.
F. Unscrew and remove the top bowl (55)
and set aside for inspection
G. Remove the impeller (38) and collet (39)
from the pump shaft according to the
following procedure:
1. To remove the collet from the
impeller, pull the shaft upwards until
the impeller is in its highest position.
Using a collet (see Assembly Tools at
To Next Page
Loading...
