
7
housing (26). Pulling the seal
plate (16) off will also force
the lower seal (22) from shaft.
Remove lower seal (22) from
seal plate (16).
4. Remove snap ring (25) and
pull upper seal (27) from shaft.
It may be necessary to use
packing hooks to remove seal.
Use a screwdriver to break
the upper stationary ceramic
seal ring so that it can be
removed easily.
CAUTION: Do not use any old
seal parts. Replace all parts
with new pieces. Mixing old and
new parts will cause immediate
seal failure.
5. When cleaning all parts before
replacement, check to be sure
bearings or shaft is not worn.
Be sure all O-rings are in
excellent condition without
cuts or nicks, and replace them
if not in excellent condition.
Use O-ring lube to prevent
cutting at assembly.
6. After upper seal (27) is
replaced we recommend an air
test be made by inserting 5 lb.
of air pressure into the motor
housing and allow ample time
for air to escape. If pressure
remains steady for five minutes
continue by replacing the seal
plate (16), lower shaft seal (22)
and impeller (17). Repeat the
air test in the seal chamber.
Next the pump must be filled
with oil. Start by filling the seal
chamber. Do not fill completely.
Allow about 1⁄2inch air space
for expansion. Next fill the
motor housing just above the
motor winding.
7. Use only Hydromatic
submersible oil in motor
chamber and seal chamber. In
an emergency, a high grade
transformer oil can be used in
the motor chamber and #20
non-detergent automobile oil
can be used in the seal chamber.
Replacing Motor Stator:
1. If necessary to replace stator
(30), completely dismantle
pump as described above.
2. Drain all oil from upper
housing. Remove drain plug
(11) in bottom of bearing
housing, and remove connection
box assembly (34) by removing
capscrews (37). Motor leads
can be disconnected. The leads
are connected with connectors
and must be cut. DO NOT
TAPE LEADS WHEN
REPLACING STATOR AS
OIL WILL DETERIORATE
THE TAPE AND CAUSE
MOTOR FAILURE. USE
ONLY INSULATED BUTT
CONNECTORS.
3. If cord leads are burned, it will
be necessary to replace power
cord and cord group assembly
(1). If any wires in the
connection box (34) are
burned, it will be necessary to
replace the connection box
assembly. Connect wires per
connection diagram.
4. Remove motor housing bolts
(28) and lift off motor housing
(32). Use care in lifting as the
seal failure connection wire
must be disconnected before
housing is completely removed.
5. Remove stator screws (29) and
set motor housing (32) on
hardwood blocks. Bump motor
housing (32) up and down on
hardwood block to loosen
stator which should drop out.
This should be reinstalled with
the new stator.
6. Thoroughly clean motor housing
(32) and other parts and install
new stator.
7. Connect leads through housing
bore and tuck leads back
behind the stator windings
to prevent rubbing on rotor.
USE ONLY INSULATED
BUTT CONNECTORS TO
CONNECT WIRES.
8. If the upper ball bearing (33)
is rusted or feels rough
when turned, it should be
replaced. Press the bearing off
the shaft. Install the new
bearing by pressing on inner
face only. PRESSING ON
THE OUTER FACE WILL
RUIN THE BEARING.
9. In reassembly, replace any
O-rings that are defective. Use
Parker O-Ring Lube on all
O-rings for easy assembly and
to prevent cutting.
10.Completely reassemble, making
sure seal failure wires are
connected.
11. Make a high voltage
ground test on each wire. The
only wires that should show
ground are the two green leads.
12.Air test the motor housing and
the seal housing by inserting
5 lb. of air pressure and allow
ample time for air to escape. If
pressure remains steady for
five minutes, you are ready to
fill the pump with oil.
13.Fill seal chamber with oil by
laying pump on side with oil
fill hole upright. Do not
completely fill; leave oil about
1⁄2" below plug hold. Use only
Hydromatic submersible oil.
Replace plug with Permatex on
threads.
14.Refill motor chamber with
oil through connection box
opening. Use high grade,
nonsynthetic transformer oil
or Hydromatic special
submersible oil. Fill housing
until oil covers top of windings.
Leave air space for expansion.