EBARA EFQT12 - Manual (Page 29)

EBARA Fluid Handling 28
SEAL PL ATE
O-RINGS
SLEEVE
O-RING
INTEGR AL
SH AFT
SLEEVE
SHEAR
RING
(SHEARED)
ST ATION ARY
SEAT
ST ATION ARY
ELEM ENT
ROT AT ING
ELEM ENT
DRIVE BAND
SPRING
CENTERING
W ASH ER
BELLOW S
IM PELLER
SH AFT
IM PELLER
SHIM S
IM PELLER
SPRING
R AT AIN ER
NOTE!
It is recommended that the seal assembly and
impeller be reassembled at this point. Refer
to the Seal Reassembly and Pump
Reassembly sections.
Connect the pedestal assembly to the power
source and secure it with the foundation
mounting hardware. Be certain the pump and
power source are properly aligned. See
ALIGNMENT IN INSTALLATION section.
Replace the pump casing O-ring (22) and secure
the casing to the pedestal assembly.
Replace the discharge flange gasket (19) and
reinstall the discharge adaptor (16).
Seal Reassembly
(Figure 02)
The seal is nor normally reused because of the
high polish on its lapped faces, but if it is
necessary to reuse the old seal, wash all metallic
parts in cleaning solvent and dry thoroughly.
Replace the bearing cap O-ring (33) and oil seal
(28). Position the lip of the oil seal away form the
oil cavity, as shown in Figure 1. Position the wave
washer (27) into the bearing cap undercut and
secure the bearing cap to the pedestal.
NOTE!
Before securing the bearing cap, make certain
that the word “TOP” is properly positioned.
The oil groove in the bearing cap must be
aligned with the oil return groove under the
bearing.
Press the front oil seal (18) into the pedestal bore
with the lip positioned toward the impeller end of
the shaft, as shown in Figure 1.
Replace the O-rings (43 and 63) and secure the
seal plate to the pedestal.
NOTE!
Apply a light coating of petroleum jelly or oil to
O-rings to ease reassembly.
Lubricate the bearing, pedestal as indicated in the
LUBRICATION section.
Figure 2. Seal Assembly