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 chopper. Remove the chopper, lock washer
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 washers 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
m o t o r. 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 holding
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 macerator housing
is keyed so it will only go in when properly positioned).
Ensuring 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.
