Piper Navajo PA-31 Service Manual page 52

PIPER NAVAJO SERVICE MANUAL
c. Leather material should be cleaned with saddle soap or a mild soap and water.
2-48. CLEANING WOOD SURFACES. Wood surfaces may be cleaned with any good household liquid or
spray cleaner and polish manufactured for this purpose.
2-49. CLEANING CARPETS. Use a small whisk broom or vacuum to remove dirt. For soiled spots, use a
non-inflammable dry-cleaning fluid. Floor carpets may be removed and cleaned like any household carpet.
2-50. CLEANING TOILET AND RELIEF TUBE.
a. 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.
b. To clean and deodorize the airplane's toilet and relief tube, mix a solution of disinfectant type
cleaner. Using a soft bristled brush, rag and solution, wash the toilet pail, seat and area around the tube
horn and exit. 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.
c. Pour the remainder of the solution through the relief tube. When offensive odor remains, use a
stronger solution and reclean.
d. Rinse with fresh water and dry.
e. To install a new sanitary bag, place it over the top edge of the pail and push it into the bottom of
the pail.
2-50a. AIRPLANE FINISH CARE. The complete airplane is carefully finished inside and outside to assure
maximum service life. Both sides of all parts are alodine treated and sprayed with zinc chromate primer.
The external surfaces are coated with durable Polyurethane enamel.
When washing the airplane it is advisable to use a mild soap and water solution. Loose dirt should be
flushed away with clean water. Harsh abrasive or alkaline soaps or detergents could cause corrosion or make
scratches in the finish.
Use naphtha and a soft cloth to remove stubborn oil and grease. Any good automotive wax can be
used to preserve the painted surfaces. Soft cleaning cloth or chamois should be used to prevent scratches
when cleaning or polishing. Apply a heavier coating of wax on the leading edges of the wings and tail
surfaces and on the nose cone section and propeller spinners to reduce the abrasion problems in these areas.
When repainting the airplane. never use aluminum foil as a paint spray mask on Aircon Nesa coated
windshields. Nesa film is used on the exterior for static electricity protection and is basically tin oxide.
Most metal brightners, whether alkaline or acidic, can react with the aluminum foil and release hydrogen,
which may come in contact with the tin oxide. When the hydrogen and the tin oxide combine, the tin
oxide film is reduced to pure tin and when wiped away will leave a permanent dark stain. If metal
brightners are to be used, insure adequate protection for the windshield by using paper and pasteboard
prior to painting.
Reissued: 10/12/79
HANDLING AND SERVICING
1C4