TM 55-1520-240-23-4
5-81.3.1
REPLACE LIGHTNING PROTECTION JUMPER STRIP
(Continued)
5-81.3.1
2.
Remove loose scrim cloth and adhesive from
jumper strip bond area (3). Use abrasive paper
(E9). Finish removal shall extend 1/2 inch
forward and aft of bond area.
3.
Remove finish from an area (4) 5 inches by 5
inches centered over both ends of jumper strip
location (3). Use abrasive paper (E9).
PREPARE FOR INSTALLATION
4.
If new doublers (2) are not available, cut two
pieces of fiberglass laminate (E168 or E168.1) 4
inches by 4 inches square. Round corners to
a 1/4 inch radius.
NOTE
Jumper replacement requires
installation of doublers at each end.
5.
Sand both sides of doublers (2) to remove
surface glaze. If fiberglass laminate (E168.1) or
replacement doublers are used, remove peel
ply protective covering from each side before
sanding.
Acetone (E20) is extremely flammable.
It can be toxic. Avoid inhaling. Use
only with adequate ventilation. Avoid
contact with skin, eyes, or clothing.
Keep away from heat, sparks, or open
flame. In case of contact, immediately
flush skin or eyes with water for
at least 15 minutes. Get medical
attention for eyes.
NOTE
Do not sand jumper strip. It is
preprimed for bonding.
6.
Wipe bonding surfaces of blade, jumper strip (1),
and doublers (2). Use clean cloth (E120) damp
with acetone (E20). Wipe dry with clean cloth
(E120) before acetone evaporates.
5-480
