(1.) Spilled oily and watery liquids will generally bead up on the fabric and can be blotted away leaving little or no stain. Blot spillsup as quickly as possible with an absorbent cloth, tissue or sponge. If the material is a solid or semi-solid, suchas butter, removethe excessby gently scrapingwith a table knife. Often,blotting will removeall traces of stain but if the staining agent is not completelyremoved by blotting, the following techniques aresuggested:

(e)
Water-basedstainssuchs ketchup, milk,ice cream, coffee:

(1.) Wipe the stain with a cloth wet with water containing a detergent or ammonia (4fluid ouncesof ammonia to one gallon of water). Repeat if necessary.
(2.) Oil based stains such as salad dressing, butter or mayonnaise maybe removed by either of the followingprocedures:
(3.) Apply "TexizeK-2R Spot Remover"by spraying or rubbing into the fabric and let dry. Vacuumoff the residual powder. Repeatif necessary or wet a cloth with a solvent type spot cleaner such as "Energine" or "Renuzit" andwipe or gently rub the stained area. Turn cloth and rewetwith solvent often. Repeat untilstaindisappears.
(4.) To remove residual detergent left on the fabric, wipe the entire fabric surfacewith a cloth dampened with water. The cloth should be rinsed in clean water several times. This procedurewill ensure that the treatment will continue to function.
NOTE:  It is best to test the cleaner on an inconspicuous portion of the fabric to test for discoloration.Also avoid soaking or harsh rubbing.
5. CleaningCarpets
WARNING: SOLVENTCLEANERSREQUIREADEQUATEVENTILATION.
Use a small whisk broom or vacuum cleaner to remove dirt. For soiled spots,use a nonflammable dry cleaning fluid. Floor carpets may be removed andcleanedlike any household carpet.
EFFECTIVITY:
040-999 12-00-00 PAGE 3
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCEMANUAL

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) FlushingToilet
(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 havetime 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 compoundedto 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)
Placecan under gear to catch waste.

(b)
Sprayor 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)
Removecover from wheel and remove catch can.

(e)
Lubricategear per lubrication chart. (Refer to 12-20-00)

EFFECTIVITY:
040-999

Jan10/9 12-00-00
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
　
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