Piper PA-34-200T Seneca II Service Manual Download

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PIPER SENECA II SERVICE MANUAL

14-50. REPAIR OF BOOTS.

Deicer repairs are classified as cold (temporary), made on the boot installed on the airplane, and
vulcanized, made on the demounted boot in the shop. (Refer to Paragraph 14-54 for vulcanized repairs.)

14-51. COLD REPAIR.

The materials and supplies for making cold repairs are listed in Table XIV-VI.

SCUFF DAMAGE. This type of damage will be most commonly encountered and, fortunately, it is
not necessary in most cases to make a repair. On those rare occasions when the scuff is severe and
has caused the removal of the entire thickness of surface ply in spots (the brown natural rubber
underneath is exposed), repair the damage using Part No. 74-451-16 and proceed as follows:

Clean the area around the damage with a cloth dampened slightly with solvent. Buff the area
around the damage with steel wool so that it is moderately but completely roughened. Wipe the
buffed area with a clean cloth slightly dampened with solvent to remove all loose particles.

Select a patch of ample size to cover the damaged area. Apply one even thorough coat of
cement, Part No. 74-451-20, to the patch and the corresponding damaged area. Allow cement
to set a couple of minutes until tacky.

Apply the patch to the deicer with an edge, or the center adhering first. Work down the
remainder of the patch carefully to avoid trapping air pockets. Thoroughly roll the patch with
stitcher-roller, Part No. 74-451-73, and allow to set for ten to fifteen minutes.

Wipe the patch and surrounding area from the center outward with a cloth slightly dampened
with solvent. Apply one light coat of A-56-B conductive cement, Part No. 74-451-11, to the
patched area.

Satisfactory adhesion of patch to deicer will be reached in four hours. Deicer may be inflated
for checking repair in a minimum of 20 minutes.

TUBE AREA DAMAGE. Repair cuts, tears, or ruptures to the tube area with fabric reinforced
patches, Part No. 74-451-16, depending on size of damage.

Select a patch of ample size to cover the damage and to extend to at least 5/8 inch beyond the
ends and edges of the cut or tear. If none of the patches is of proper size, cut one to the size
desired from one of the larger patches. If this is done, bevel the edges by cutting with the
shears at an angle.

NOTE: These patches are manufactured so that they will stretch in one direction only. Be sure

to cut and apply the patch selected so that stretch is in the widthwise direction of the
inflatable tubes.

Buff the area around the damage with buffing stick, Part No. 74-451-75, so that the surface is
thoroughly roughened.

Apply the patch to the deicer with the stretch in the widthwise direction of the inflatable tubes,
sticking edge of patch in place, working remainder down with slight pulling action so the
injury is closed. Do not trap air between patch and deicer surface.

Piper PA-34-200T Seneca II, Service Manual

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