OM--05096
S SERIES
MAINTENANCE & REPAIR
PAGE E -- 10
lint-free cloth. Use your thumbs to press the as-
sembly into the bore. Apply equal pressure on op-
posite sides until the seat contacts the bore shoul-
der. Remove the tissue and inspect the seal face to
ensure that it is clean and dry. If cleaning is neces-
sary, use a clean lint-free cloth to wipe
lightly
in a
concentric pattern.
Be certain the seal face of the upper rotating ele-
ment is free of grit or surface damage and that it is
clean and dry. If cleaning is necessary, use a clean
lint-free cloth to wipe in a concentric pattern. Apply
a
light
coating of oil to the seal seating surface on
the shaft and the I.D. of the bellows. Apply a drop of
oil to the seal face.
Slide the rotating portion of the upper seal assem-
bly onto the lubricated shaft as shown in Figure 3.
Apply firm, steady pressure on the seal retainer un-
til the seal slides onto the shaft and the upper seal
faces contact.
Repeat the above procedure for the rotating por-
tion of the lower seal assembly, making sure to po-
sition the lower seal back-to-back against the up-
per seal.
Position the oil chamber cover (37) with the motor
side up. Ensure that the lower seal stationary ele-
ment is subassembled in the stationary cup seat.
Position this subassembly in the cover bore with
the sealing face up, and cover the seal face with a
clean, lint-free cloth. Use your thumbs to press the
assembly into the bore. Apply equal pressure on
opposite sides until the seat contacts the bore
shoulder. Remove the tissue and inspect the seal
face to ensure that it is clean and dry. If cleaning is
necessary, use a clean lint-free cloth to wipe
lightly
in a concentric pattern.
Apply a drop of oil to the lower seal stationary face.
Install the oil chamber cover gasket. Carefully posi-
tion the oil chamber cover over the shaft so the low-
er seal faces contact. Install the machine screws
(38) and tighten them in an alternating pattern until
the seal springs are compressed and the cover
seats tightly against the gasket.
Fill the seal chamber with approximately 1.25 oz
(0,04 liter) of oil to cover the seals, but
do not
com-
pletely fill the chamber. There must be enough air
in the chamber to allow for expansion as the oil
heats. Refer to the
Lubrication Specifications
at
the end of this section for the correct lubricant. Re-
install the oil cavity drain screw and O-ring (34 and
5H).
Lubricate the lip of the oil seal (35) and place the
seal in the oil chamber cover (37) with the lip posi-
tioned as shown in the seal detail, Figure 3. Press
the seal into the oil chamber cover until fully
seated.
Impeller Installation
Before installing the impeller, remove the oil cavity
drain screw and O-ring (34 and 5H) and check the
seal cavity oil level. Fill the seal chamber with
approximately 1.25 oz (0,04 liter) of oil to cover the
seals, but
do not
completely fill the chamber. There
must be enough air in the chamber to allow for ex-
pansion as the oil heats. Refer to the
Lubrication
Specifications
at the end of this section for the
correct lubricant. Reinstall the oil cavity drain screw
and O-ring.
Inspect the impeller (2) for cracks, broken vanes,
or wear from erosion, and replace it if damaged.
Clean the threads on the rotor shaft.
Lubricate the O.D. of the shaft sleeve (36). Slide the
sleeve over the shaft and through the lip seal (35)
until fully seated against the shaft shoulder. Be
careful not to roll or damage the lip seal.
Screw the impeller onto the shaft until it is fully
seated. Insert a large flat-blade screwdriver into
the slot in the end of the shaft. Tighten the impeller
on the shaft by tapping it with a hammer and wood
block or a soft-faced mallet.
Install the suction cover O-ring (5G) and impeller
housing/suction cover (1). Secure with the ma-
chine screws (4).
Strainer Installation
Position the strainer screen (39) against the impel-
ler housing/suction cover, and secure it with the
machine screws (33).
