Adhesion Test - Piper PA-44-180 SEMINOLE Maintenance Manual

4. Rubber roll, apply pressure over entire surface of the deicer. All rolling should be done parallel to the
inflatable tubes. Roll trailing edges with a narrow stitcher-roller.
AVOID EXCESSIVE SOAKING OR RUBBING OF THE CEMENT WHICH
COULD REMOVE THE CEMENT FROM THE SURFACE.
Remove all masking tapes and clean surfaces carefully with Toluol so that no solvent will run under deicer
edges.
5. Apply masking tape to deicer edges where exposed trimmed ends or gaps between sections are to be filled
with MMM EC-801 sealing compound.
Apply masking tape to deicer approximately 1/4 inch in from trailing edges and tape wing skin
approximately 1/4 inch from trailing edges, both forming a neat, straight line.
6. Apply a brush coat of A-56-B cement to surfaces between tapes and to EC-802 seams, being sure that the
conductive coating (A-56-B) is continuous from the deicer surface to the wing painted surface.
7. Remove tapes immediately after applying A-56-B cement (before cement dries).
Application of A-56-B conductive cement is not necessary on deicers that have
CONDUCTIVE noted on labels.
THE CEMENTS AND SOLVENTS USED FOR INSTA L L ATION ARE
FLAMMABLE AND THEIR FUMES SLIGHTLY TOXIC. THEREFORE, ALL
WORK SHOULD BE DONE IN A WELL VENTILATED AREA AWAY FROM
ANY SPARKS OR FLAMES (USE OF SOLVENT RESISTANT TYPE
GLOVES IS RECOMMENDED.)
In the event it becomes necessary to remove or loosen installed boots, use Toluol to soften the "adhesion" line.
A minimum of this solvent should be applied to the seam line while tension is applied to peel back the boot. This
removal should be slow enough to allow the solvent to undercut the cement, thus preventing injury to the part.
Excessive quantities of solvent must be avoided.

ADHESION TEST.

Using excess boot material trimmed from the ends of any wing and empennage deicers, prepare one test
specimen for each deicer installed. This specimen should be a 1 x 8 inch full thickness strip of boot maternal
cemented to the wing skin adjacent to installed boot following the identical procedure used for installation.
Leave one inch of the strip uncemented to attach a clamp. Four hours or more after the installation, attach a
spring scale to the uncemented end of each strip and measure the force required to remove strip at the rate of one
inch per minute. The pull should be applied 180° to the surface. (Strip doubled back on itself.)
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
— CAUTION —
— Note —
— CAUTION —
2D21
3 0 - 1 3 - 1 3
Page 30-17
Revised: May 15, 1989