Preparation And Installation Of Radome Boot; Inspection Of Radome Boot; Radome Erosion Shield - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
4-111. PREPARATION AND INSTALLATION OF RADOME BOOT.
a. Thoroughly wash repair, primed radome with isopropyl alcohol and wipe dry.
b. Use a marking pen to place an orientation mark (+) on the top center of radome surface.
c. Position boot. with protective liner still in place. over radome.
1. Rotate to determine optimum fit.
2. On the top center of the boot surface, use a marking pen to trace over the orientation mark (+).
3. Add a vertical orientation mark overlapping the bottom of the boot onto the side of the
radome.
d. Turn boot inside out and place over radome (disregard orientation marks).
I. Carefully remove transparency protective liner. Saturate the exposed adhesive surface with
wetting solution as the liner is being removed to prevent adhesive to adhesive contact. (A sponge or spray
bottle can be used.)
2. After the liner has been removed, make sure that the entire adhesive surface has been saturated
with wetting solution.
3. Remove boot.
4. Now. completely saturate the radome surface with wetting solution.
e.
Place the boot over the radome (adhesive side to radome) carefully aligning the orientation marks.
During this step. the boot will be right side in.
f. After proper alignment has been made. squeeze out wetting solution, starting at the top center and
working out and down. Care should be taken to avoid blisters under the boot.
g. If after application of the boot, there appears to be blisters beneath the surface. piercing them with
an ordinary safety pin will relieve the entrapped air or wetting solution so that the blister can be worked out
with the squeegee.
h. Wrap the outside circumference of the boot with 1 '2" wide masking tape at the desired location.
Trim boot with an industrial razor blade knife being careful not to cut into the radome skin surface.
i.
Wash boot with isopropyl alcohol. wipe dry and paint with a suitable polyurethane paint system.
4-112. INSPECTION OF RADOME BOOT.
a. Inspect for cuts. blisters. perforations. edge lifting, etc. every 100 hours.
b. The boot should be replaced at the first sign of damage.
4-1 13. RADOME EROSION SHIELD.
4-114. LIST OF MATERIALS.
a. Cement - Minnesota Mining and Manufacturing Co. EC-1403 or 1300 L. (Approximate coverage
80 sq. ft. per quart mixed.)
b. Scissors - 2" blades with pointed tips.
c.
Sol ents - Toluol for tackifying (See Note). Methylethylketone(MEK) cement thinner and cleaning
solvent.
d. Cloth - clean and lint-free.
e. Paint brushes - one 1 1/2 or 2" and one 1/2".
f. Sponge roller - 2".
Added: 10/5/83
STRUCTURES
1H11