DG Flugzeugbau LS8 - Installation of Control Surface Gap Seals; Gap Seals Ailerons

Maintenance Manual LS8
Issued: December 2009
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
Manual valid with the up-to-date cover page only
4-5
4.2 Installation of control surface gap seals
4.2.1 Gap seals ailerons
Gap seals ailerons LS8
(1) Lay wing upside down on adequately padded supports at root rib and
wingtip, outside of aileron.
Always tighten plastic gap seal during bonding
with 2 persons.
(2) Clean bonding area from adhesive residues; if bonding area is milled (no
or almost no white gelcoat existent) prime with contact adhesive
(Example: Pattex)..
(3)
Deflect control surface fully downward, mark rear edge of seal on
control surface with a soft pencil using a short length of seals material
as template.
(4)
Deflect control surface fully upward, place self-adhesive Teflon tape with
its rear edge 2 mm <0.08 in> behind marking of seal's rear edge. Use
double tape at wider bearing pin cutouts (Short piece under continuous
seal.
(5)
Cut Teflon tape leading edge on wing using a sharp knife such, that
bonding width on wing is 2 mm <0.08 in>. When Teflon tape bonding
width on wing is wider, bonding width for convex plastic seal is insufficient
because Teflon prevents proper bonding.
(6)
Remove masking tape from convex plastic seal and position leading edge
flush with wing side recess.
(7)
Cover leading edge of convex plastic seal with tape against warping
(Example: Tescal 4178 white). See also details and sketches on following
pages.
Material:
N
o. Desi
g
nation Amount
1 Tesafilm 4104 white 25 mm
[
0.75in
]
16 m <52.5 ft>
2 Bondin
g
film Tesafix 12 mm
[
0.59in
]
8 m <25 ft>
2a Tesaband 4976 0.4 dick schwarz 12 m
m
8 m <25 ft>
3 Convex seals stri
p
0.25
,
form 1
,
21 mm 8 m <25 ft>
4 Tesafilm 4104 white 19 mm
[
1.0in
]
8 m <25 ft>
5 Convex seals stri
p
0.25
,
form 2
,
25 mm 8 m <25 ft>
6 Teflon-
g
lass ta
p
e 0.08*38 mm
[
1.5in
]
8 m <25 ft>