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The toilet has no wearing parts that need periodic
replacement other than the shaft seal which, under
normal conditions, should provide several years of
service before needing replacement. The seal only
requires replacement if signs of leakage are noticed
under the seal housing positioned between the motor
and toilet base assembly.
WARNING
!
Flood hazard. If toilet is plumbed to an
overboard discharge, close the discharge
seacock prior to disassembling toilet.
Failure to do so can result in flooding which
can cause loss of property and life.
Notice: Before performing any service, disconnect the
power supply to the toilet and take precaution to ensure
it is not reconnected until the service is complete. Also,
pump all water from the toilet bowl and if connected to
an overboard discharge, close the discharge seacock.
To replace the shaft seal, snap off the white motor cover
and remove the pump assembly by removing the four
screws with lock washers that secure it to the toilet base.
Carefully slide the pump assembly from the base
ensuring the macerator housing also slides out of the
base with the pump.
The pump chopper will engage the macerator housing and
it may be necessary to gently tap the chopper against the
macerator housing to free it from the base.
Prevent the motor shaft from turning by inserting a
screwdriver in the shaft slot at the rear of the motor and
unscrew the nut retaining the chopper blade. Remove
the chopper and macerator housing from the motor
shaft. Remove the O-ring from the O-ring groove around
the outer diameter of the seal housing. With an allen
wrench, loosen the centrifugal impeller set screw and
slide the impeller off the shaft. Remove the two screws
that secure the seal housing to the motor and slide the
housing off the motor shaft. Remove the two seal wash-
ers from under the head of each of the two seal housing
retainer screws. With a pair of needle nose pliers grasp
the shaft seal and pull it from the seal housing. Clean all
parts and inspect for damage.
Lubricate the OD of the new seal with a small amount of
water and press it into the seal bore with the seal's lip
facing the threaded end of the shaft. Do not use the
stainless steel star retaining washer supplied with the seal.
Lubricate the ID of the seal and the motor shaft with a
small amount of water resistant grease. Ensure the slinger
is properly positioned on the motor shaft next to the motor
and slide the seal housing onto the motor shaft until it is
against the motor end bell. Position a new plastic seal
washer under the head of each of the flat head seal
housing retainer screws and secure the seal housing to the
motor. Slide the centrifugal impeller on the motor shaft
positioning it about 1/32" (1mm) from the seal housing and
secure it to the shaft with the set screw. Rotate the impeller
to ensure it does not rub on the seal housing.
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Slide the macerator housing over the motor shaft, posi-
tion the SS chopper blade on the end of the shaft, then
place the nut on the shaft and tighten holding the shaft
slot at the rear of the motor. Position a new O-ring in the
seal housing O-ring groove (it may be retained in the
groove with a small amount of grease). Slide the pump
assembly into the toilet base ensuring the macerator
housing is properly positioned within the base. The cut-
out in the side of the macerator housing must align with
the discharge port in the base (the macerator housing is
keyed so it will only go in when properly positioned). En-
suring the O-ring is still properly positioned in the O-ring
groove in the seal housing, place the pump assembly
against the base and secure it in place with the four
screws and lock washers. Replace the white motor
cover by snapping it down over the pump motor.
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