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PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
D. Aircraft Finish Care (continued)
6. Cleaning Toilet
(a) Dry Toilet
(1.) To dispose of the sanitary bag, pull the top of the bag from the pail and close with a wire
tie. Remove it from the airplane in the covered pail and dispose of according to field
facilities. Do not attempt to flush the bag in a toilet.
(2.) To clean and deodorize the airplane's toilet, mix a solution of disinfectant type cleaner.
Using a soft bristle brush, rag and solution, wash the toilet pail and seat. The toilet may
be removed for cleaning by disconnecting the two fasteners at the inside forward end of
the unit. Slide it back and lift from the floor.
(3.) When offensive odor remains, use a stronger solution and reclean.
(4.) Rinse with fresh water and dry.
(5.) To install a new sanitary bag, place it over the top edge of the pail and push it into the
bottom of the pail.
(b) Flushing Toilet
(1.) To clean, disconnect the electrical plug. Unlock the toilet assembly by turning the wing
head fasteners one-half turn counter-clockwise. Remove the toilet assembly and clean.
Service per the instructions located on the toilet waste tank.
7. Cleaning Surface Deicing Equipment
The deice boots should be cleaned when the aircraft is washed using a mild soap and water
solution.
In cold weather, wash the boots with the airplane inside a warm hangar if possible. If the cleaning
is to be done outdoors, heat the soap and water solution before taking it out to the airplane. If
difficulty is encountered with the water freezing on boots, direct a flow of warm air along the region
being cleaned, using a portable type ground heater.
As an alternate cleaning solvent, use benzol or non-leaded gasoline. Moisten the cleaning cloth in
the solvent, scrub lightly and then with a clean dry cloth, wipe dry so that the cleaner does not
have time to soak into the rubber.
CAUTION: PETROLEUM PRODUCTS SUCH AS THESE ARE INJURIOUS TO RUBBER AND
THEREFORE SHOULD BE USED SPARINGLY IF AT ALL.
When deice boots are clean, a coating of B.F. Goodrich Icex should be applied. Icex is
compounded to lower the strength of adhesion between ice and rubber surface of the deice boots.
8. Cleaning Landing Gear
Before cleaning landing gear, place plastic cover or similar material over wheel and brake
assembly.
NOTE: Inboard gear doors can be lowered by actuating emergency hand pump handle with
master switch OFF.
(a) Place can under gear to catch waste.
(b) Spray or brush gear area, as required, with solvent or mixture of solvent and degreaser.
(c) Allow solvent to remain on gear for 5 to 10 minutes. Rinse gear with additional solvent and
allow to dry.
(d) Remove cover from wheel and remove catch can.
(e) Lubricate gear per lubrication chart. (Refer to 12-20-00)
EFFECTIVITY:
040-999
Jan 10/9
12-00-00
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