Upper Shaft Seal Removal
First, complete “Normal Shut Down” procedure.
Disconnect power to the strainer motor and discon-
nect the motor leads.
Disconnect power and remove fuses in the control
panel.
Disconnect electrical connections to the motor
.
Upper Shaft Seal Removal.. Continued
Make note of the relative position of the backwash
arm/shaft and the reducer top. Remove the drive pin
from the top of the backwash arm/shaft.
Remove the four (4) bolts holding the speed reducer
and motor to the cover assembly.
Carefully lift the reducer and motor straight up until it
clears the top of the backwash arm/ shaft.
Remove Screws (B) from the Housing (A) & slide
Housing (A) over the backwash arm/shaft. See Fig-
ure 1
The Upper Bushing (D) and the two (2) Quad-Rings
(C) can be inspected and replaced as needed. See
Figure 1.
Figure 1
Upper Shaft Seal Replacement
Refer to Figure 1.
Slide Gland Gasket (F) down the backwash arm/shaft
to the Packing Block (machined area around the top
central hole of the cover).
Slide O-Ring (E) down the backwash arm/shaft to the
Gland Gasket (F).
Slide Upper Bushing (D) over the backwash arm/shaft
to the Upper O-Ring (E).
Lubricate the two (2) Quad-Rings (C) with a light film
of Process Compatible Lubricant and insert each into
the Housing (A).
Upper Shaft Seal Replacement..Continued
Slide Housing (A) over the backwash arm/shaft, until
the Housing (A) rests on the Packing Block and over
the Upper Bushing (D).
Align holes in Housing (A) and Gland Gasket (F) to
the Packing Block.
Insert the Screws (B) into Housing (A) going through
the Gland Gasket (F) and into Packing Block and
screw until tight.
Replace the gear reducer and motor using Instruction
Steps 8 through 13 in “ SPEED REDUCER RE-
PLACEMENT”.
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