Piper SEMINOLE PA-44-180, Maintenance Manual

Page: 379 / 881

Before applying Icex, thoroughly clean deicer or other rubber surfaces with a rag dampened with non-leaded
gasoline. Follow by a scrub wash of mild soap and water. Allow time for surfaces to dry.
Shake the Icex can well. Hold the nozzle approximately 12 inches from the surface and spray. Apply
sparingly. If the application is too heavy, it results in a sticky surface which is very undesirable because it will
pick up runway dust and prevent best ice removing efficiency.
Due to the natural abrasive effects on leading edges of deicers during flight, reapply Icex every 150 night hours
on wings and empennage deicers.
RESURFACING CONDUCTIVE CEMENT.
The following materials are required to remove and replace the old, damaged coating:
1. Fine grit sandpaper.
2. Two inch paint brush.
3. One inch masking tape.
4. Conductive neoprene cement, No. A-56-B, B. F. Goodrich Company.
5. Isopropyl Acetate. Federal Specification TT-I-721, as cleaning or thinning solvent.
6. Alternate solvent (Toluol or Toluene may be used as an alternate for Isopropyl Acetate).
— CAUTION —
CEMENTS AND SOLVENTS USED FOR RESURFACING ARE
FLAMMABLE AND THEIR FUMES SLIGHTLY TOXIC. THEREFORE, ALL
WORK SHOULD BE DONE IN A WELL VENTILATED AREA AWAY FROM
ANY SPARKS OR FLAMES.
During cold weather, place the airplane in a warm hangar and locate so that the boots are in line with one or
more blast heaters. Do resurfacing before any other work on the airplane to allow as much time as possible for
the new coat to cure.
— Note —
If for some reason the resurfacing cannot be done indoors, it may be deferred at the
discretion of the inspector untill a warm, clear day permits the work to be
satisfactorily accomplished outdoors. However, if the deicers are in such condition
that immediate resurfacing is required, remove them from the airplane and resurface
in a shop.
Clean deicer thoroughly with Isopropyl Acetate.
1. Roughen entire surface of boot, using a fine grit sandpaper.
2. Clean surface again with clean, lint-free cloth moistened with cleaning solvent.
3. Apply masking tape beyond upper and lower trailing edges, leaving a 1/4 inch gap of bare metal.
4. Mask off any legible deicer brands.
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
3 0 - 1 3 - 1 6
Page 30-19
Revised: May 15, 1989
2D23
PIPER AIRCRAFT