SERVICE
The Jabsco Quiet-Flush Toilet does not require routine
maintenance other than occasional cleaning to maintain
a hygienic sanitary condition. Clean toilet with mild
nonabrasive cleaners without strong aromatics. Cleaners
having high concentrations of aromatics such as pine
scented concentrated cleaners and strongly scented
degreaser concentrates can cause the pump
’
s seal to
swell and may contribute to a premature seal leak.
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.
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 plas-
tic seal washer under the head of each of the flat head
seal housing retainer screws and secure the seal hous-
ing 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.
Slide the macerator housing over the motor shaft, place
the lock washer on the end of the shaft and screw the
chopper onto the shaft. Tighten the chopper while hold-
ing the motor shaft 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 mac-
erator housing is keyed so it will only go in when proper-
ly positioned). Ensuring the O-ring is still properly posi-
tioned 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.
W
!
