OM--01930--03
T SERIES
MAINTENANCE & REPAIR
PAGE E -- 7
Suction Check Valve Removal
(Figure 1)
If the check valve assembly (42) is to be serviced,
reach through the back cover opening, remove the
check valve pin (3) and pull the complete assembly
from the suction flange (41).
NOTE
Further disassembly of the check valve is not re-
quired since it must be replaced as a complete unit.
Individual parts are not sold separately.
Rotating Assembly Removal
(Figure 1)
The rotating assembly (2) may be removed from ei-
ther side of the pump casing (1); however, it is rec-
ommended that it be removed through the back
cover opening.
(Figure 2)
The impeller (1) should be loosened while the rotat-
ing assembly is still secured to the pump casing.
Before loosening the impeller, remove the seal cav-
ity drain plug (21) and drain the seal lubricant. This
will prevent the oil in the seal cavity from escaping
when the impeller is loosened. Clean and reinstall
the seal cavity drain plug.
Immobilize the impeller by wedging a block wood
between the vanes, and remove the impeller cap-
screw and washer (27 and 28). Install a lathe dog
on the drive end of the shaft (17) with the “V” notch
positioned over the shaft keyway.
With the impeller rotation still blocked, see Figure 3
and use a long piece of heavy bar stock to pry
against the arm of the lathe dog in a counterclock-
wise direction (when facing the drive end of the
shaft).
Use caution
not to damage the shaft or key-
way. When the impeller breaks loose, remove the
lathe dog and wood block.
NOTE
Do not remove the impeller until the rotating assem-
bly has been removed from the pump casing.
Turn
Counterclockwise
Lathe Dog Arm
“V” Notch
Shaft Key
Impeller Shaft
Lathe Dog
Setscrew
Heavy
Bar Stock
Figure 3. Loosening Impeller
(Figure 1)
Remove the inner hardware (17 and 18) from the
casing ring (14). Install three of the inner cap-
screws in the jacking holes in the casing ring, and
use them to press the rotating assembly into the
pump casing until the bearing housing is free.
Remove the jacking screws from the casing ring.
Remove the outer hardware (15 and 16) and shim
sets (13), and separate the casing ring from the
pump casing. Tie and tag the shim sets for ease of
reassembly.
An optional disassembly tool for removing and in-
stalling the rotating assembly is available from the
factory. If the tool is used, follow the instructions
packed with it. If improvised tools are used, be sure
they are heavy enough for safe use and will not
damage the pump.
After the rotating assembly is loosened, screw a
5/8-18 UNF X 16-inch long threaded rod into the
impeller shaft. Support the drive end with another
set of handles, or a length of pipe (1 13/16 inch
minimum I.D.), and slide the complete rotating as-
sembly through the back cover opening (see Fig-
ure 4). Move the rotating assembly to a clean work
area before proceeding with disassembly.
