
12
2005 Doctor Martin Luther King Jr Street
Indianapolis, IN 46202
Rev 07-2021
Inspect the top bowl and/or
discharge manifold to determine if the
bypass ports are open or plugged. In
some cases, it may be necessary to
unbolt the top bowl/discharge manifold
from the bowl assembly and remove it
from the shaft, in order to determine
whether the bypass ports are open or
closed. An open bypass port can be
verified by sticking a welding rod from
the outside of the bowl inward, making
sure that it comes out in the area where
the shaft rotates, and is not blocked by a
bearing that has been installed over the
area of the bypass port.
If the lineshaft bearings are to be
oil-lubricated, the bypass ports must be
open. If the lineshaft bearings are to be
water-flushed, the bypass ports must be
closed.
Remove the shaft coupling and
upper tube bearing from the pump bowl
unit. Do not plug the ports with any solid
material.
For oil-lubricated pumps, fill the oil
groove in the lower tube bearing with a
medium-weight water proof grease. A
list of recommended greases is given in
Table 3a on page 32. If the bearing has a
longitudinal hole parallel to the bore,
plug that with grease also. Pack the top
bearing adaptor tube approximately half-
full with the same grease. This will
prevent loss of lubricating oil into the
well or sump and entry of pumping
liquid into the enclosing tube. Replace
the bearing and the coupling.
If the tube bearings are to be fresh
water lubricated, (refer to the assembly
drawing), there is no special preparation
before installation, except to be certain
that the bearings AND the inside
enclosing tubing are clean and free of
any dirt or debris. Do not put any other
lubricants in the bearings or
tubing.Check the total length of the
pump bowl unit, suction pipe, and
strainer (if furnished) to see whether the
hoist clearance is sufficient to handle
these assembled parts as a unit. If the
clearance is sufficient, assemble the
strainer to the suction pipe and the
suction pipe to the bowl unit. Lay this
assembly across the timbers, close to the
sump, ready for installation.
When head room is limited,
assemble all the standard shaft, tube, and
column sections. Insert one of the shaft
sections through the bearings in one of
the tube sections. Next, insert the
assembled shaft and tube through a
column section, with the tube bearing at
the same end as the column coupling (or
flange). This end is the upper end.
Arrange the shaft, tube, and column
sections so that the lower end of the
shaft protrudes about a foot beyond the
lower end of the tube, and the lower end
of the tube protrudes about a foot
beyond the lower end of the column.
This will make them convenient for
tying later. When inserting the shaft
and tube sections into the column
sections, take care not to bend the shaft,
damage the threads, or scrape the
bearings. Assemble all of the standard
column, tube, and shaft sections—except
the top section—in this manner and
arrange them on parallel timbers, next to
the bowl unit, with the coupling ends
nearest to the well or sump.
Do not insert the top shaft section
into the top tube and column sections at
this time. Before proceeding with the
actual installation, check to see that all
the pump parts and equipment have been
prepared according to the directions
given in this section (pp. 9-12).