6EM Thru 18GM - 1100 Vertical Turbine Pumps 45
D. Open a lock collet slightly and slide over
the pump shaft and into the impeller.
Using a collet driver (refer to Assembly
Tools at found at the end of this section)
drive the lock collet into place in the
impeller bore. This will require
substantial force to make sure the collet
is properly seated. An experienced
mechanic will be able to detect the
change in sound when the collet has
properly seated.
CAUTION
Failure to properly seat the impeller drive
collet will result in damage to the pump.
E. Install the intermediate bowl and tighten
capscrews.
F. Repeat steps C, D and E to install all
additional stages until all pump bowls
have been reassembled.
G. Install the top intermediate bowl (55) and
discharge case (54) over the pump shaft
and bolt in place with capscrews and
nuts.
H. Remove the shaft locating tool holding
the pump shaft in place. Check the bowl
end play. It should be the same as
previously recorded (or very close). If it is
not, the bowl assembly should be
disassembled to determine the reason.
Pack the cavity with grease and replace
the pipe plug in the suction bell (case)
hub.
I. Install the coupling (31) on the pump
shaft.
J. The bowl assembly is now complete.
K. Refer to Wear Rings for instructions on
wear ring replacement, if wear ring
replacement is required.
L. Refer to the Installation Section of this
manual to complete pump assembly and
reinstallation.
Threaded Bowls
A. Put the suction bell (case) in a horizontal
position and block from rolling. Insert the
pump shaft into the bearing as far as it
will go. Insert a shaft locating through
the pipe tap in the suction bell and fasten
to the pump shaft. Tighten securely.
B. Install the sand collar if it has been
removed and secure with setscrews.
C. Install the first impeller over the pump
shaft and into position in the suction bell
(case) seat. The impeller should rotate
freely in the bowl. If it binds, remove and
determine the cause.
D. Open a lock collet slightly and slide over
the pump shaft and into the impeller.
Using a collet driver (refer to Assembly
Tools at found at the end of this section)
drive the lock collet into place in the
impeller bore. This will require
substantial force to make sure the collet
is properly seated. An experienced
mechanic will be able to detect the
change in sound when the collet has
properly seated.
CAUTION
Failure to properly seat the impeller drive
collet will result in damage to the pump.
E. Install the intermediate bowl and tighten
securely.
F. Repeat steps C, D, & E to install all
additional stages until all pump bowls
have been reassembled.
G. Install the top intermediate bowl and
tighten securely.
H. Install the discharge case and tighten
securely.
I. Remove the shaft locating tool holding
the pump shaft in place. Check the bowl
end play. It should be the same as
previously recorded. If it is not, the bowl
assembly should be disassembled to
determine the reason. Pack the cavity
with grease and replace the pipe plug in
the suction bell (case) hub.
J. Pin each threaded joint using a 3/16 x
1/2 pin.
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