Resurfacing Conductive Cement - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
c. If Icex is to be applied without first applying Agemaster No. 1:
1. When applying Icex with a swab apply in a continuous back and forth (spanwise) motion.
2. Thoroughly clean the deicer boots with a mild soap and water solution. Isopropyl alcohol may be
used sparingly on stubborn stains. However, after using alcohol the surface must again be cleaned with a mild
soap and water solution. After cleaning the boots. thoroughly rinse with clean water and allow to dry com-
pletely. Apply Icex as described previously. (One quart will cover approximately 41)0 square feet.)
NOTE
Icex is not a cure-all for icing problems in that it will not prevent
or remove ice formations. Nor will it effectively protect against
ozone attack. Its only function is to prevent ice from strongly
adhering to the rubber boots allowing easy and efficient
removal
Too heavy an application of Icex will result in a sticky surface
and cause dirt and dust to collect on the boot reducing the
efficiency of the Icex and the boot.
14-86. RESURFACING CONDUCTIVE CEMENT. The following materials are required to remove and
replace the old, damaged coating:
a. Fine grit sandpaper.
b. Two inch pain brush.
c. One inch masking tape.
d. Conductive neoprene cement, No. A-56-B, B. F. Goodrich Company.
e. Isopropyl Acetate. Federal Specification TT-1-720, as cleaning or thinning solvent.
f. 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 inline 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 the resurfacing cannot be done indoors, it may be deferred, at
the discretion of the inspector, until 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.
a. Roughen entire surface of boot, using a fine grit sandpaper.
b. Clean surface again with clean, lint-free cloth moistened with cleaning solvent.
c. Apply masking tape beyond upper and lower trailing edges, leaving a 1/4 inch gap of bare metal.
d. Mask off any legible deicer brands.
Revised: 3/31/94
ACCESSORIES AND UTILITIES
4G11