THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 9
Jun 1/03
3C19
28-10-00
(g) Using two aluminum plates larger than patch:
1 Cover one smooth surface of each plate with fabric-backed air foam, fabric side out.
Foam must cover edges of plate for protection.
2 Tape air foam in place.
(h) Using a cellophane separator to prevent cement from sticking in the wrong place:
1 Fold cell adjacent to patch and place one prepared plate over repair patch.
2 Place second prepared plate outside of bladder opposite patch.
CAUTIO
N: MAKE SURE THAT CELL FOLD IS NOT CLAMPED BETWEEN PLATES.
THIS WOULD CAUSE A HARD PERMANENT CREASE. ALSO MAKE
SURE THAT THE PATCH DOES NOT MOVE WHEN CLAMP IS
TIGHTENED.
(i) Center repair iron 2F1-3-25721-1 on plate over repair patch. Secure assembly with a
C-clamp. Tighten by hand. Check cement flow to determine pressure.
(j) Connect repair iron into 110-volt current and cure repair for two hours.
(k) After curing, unplug repair iron and allow it to cool to touch. Remove C-clamp. Wet
cellophane to remove it from repair.
CA
UTION: APPLYING BOTH AN OUTSIDE AND INSIDE REPAIR PATCH
SIMULTANEOUSLY NOT RECOMMENDED.
(l) After outside patch has been cured, apply inside patch using same procedure as above,
except for side of repair patch (see Limitations, above.)
CA
UTION: FOR EACH 10°F DROP IN TEMPERATURE FROM 75°F, ADD 20 HOURS
CURE TIME. FOR EXAMPLE: AT 65°F, CURE FOR 92 HOURS.
(4) Air Cure Repair Patch Method
Follow procedure for heat cure method, above, except omit repair iron. Cure each patch for a
minimum of 72 hours, undisturbed at 75°F.
(5) Fuel Cell Defect Repairs
(1) Blisters:
1
Remove loose material by trimming.
2 Apply an outside and inside repair patch.
(2) Holes, Punctures, Cuts, Tears and Deep Abraded Areas:
1 Trim away any ragged material
2 Apply an outside and inside repair patch.
(3) Loose Seams:
1 Buff loose edges and contact surfaces with emery cloth.
2 Wash three times with Methylethylketone.
3 Apply 80C27 mixed cement in two coats as with a repair patch.
4 Clamp and cure. Cure by either heat cure or air cure method.
5
Loose seams may be trimmed if a minimum lap remains.
(4) Loose Fitting Flange - Inside:
1
Buff the edge of the flange and the contact surface under the flange.
2
Apply 80C27 mixed repair cement, cellophane, padded plates and clamp.
3
Follow procedure as outlined for repair patch.
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