Mooney M20R - Spar Cap Repair; Spar Cap Replacement; Spar Web Repair

SERVICE
AND
MAINTENANCE MANUAL
M20R
MOONEY
AIRCRAFT CORPORATION
1. SPAR CAP
REPLACEMENT.
To
replace
spa~
cap,
is
completely
removed.
Clean
and
prime
area
where
remove
skin
covering
area
to
be
repaired.
FBefore
protective
coating
has
been removed.
removing
a
large
area
of
wing
skin,
attach
temlporary
2. SPAR CAP
REPAIR.
Spar
caps
outboard
of
STA
103
consist of sheet
metal
angles
backed
up
with
jigs
or
holding
fixtures
to
wing
to
prevent
war-
page.
When
attaching
a
new
spar cap,
assure
aluminum extrusions from
STA
103
to
near
STA
150.
interference
fit
of
any
replaced
huckbolts.
During
Replace
or
repair
damaged
extrusions.
Do not
allow
lation of
new
spar cap,
all holes
damaged
by
splices
in
a
repaired
extrusion
to
coincide with
a
spar-
drilling
or
reaming
should be reamed
to
size web
splice
when avoidable.
Splice
sheet-metal
angles
recommended for
oversize huckbolt installation.
with
an
extrusion of
equal
area,
picking
up
existing
fas-
installing
oversize
huckbolts,
consult
the Huck
Fa~ener
teners. Add
extra
fasteners
to
bring
minimum number
Standards Manual
for
proper
tolerances. Use
proper
of fasteners
to
six AD-5
rivets
per
side
in
the
vertical
length
huckbolts.
If
huckbolt is
too
long,
the
hu~k
col-
flange
and nine
AD-4
(or
six
AD-5)
rivets
per
side
in the
lar
will
not
swage
properly;
if
the
huckbolt is
too
/short,
horizontal
flange.
(Figure 51-7).
the shank
will
not
completely
fill
hole.
3.
SPAR
WEB REPAIR.
Repair
all
damage
to
spar
Repair
scratches
on
spar caps
that
are
not
deepej
than
webs
in
accordance
with
AC
43.13-(
If
there is
exten-
.003
inch
by sanding
with
No.
400
abrasive
rPaper.
sive
damage
to
a
web that
cannot
be
repaired
as
out-
Remove
no more
than
.005
inch of material.
Ifjspect
lined
in
AC
43.13-(
consult
Mooney
Aircraft
Corpora-
sanded
area;
use
dye
penetrant
to be
sure
that
scratch
tion,
PRODUCT SUPPORT
DEPARTMENT
personnel,
giving
exact
location and
extent
of
damage.
SPLICE
ANGLE
MATERIALI 7075-T6
.875
,130h
(4 MIN,
EICH
SIDES
.160
I I
0)
i
o~
0) 0) 0)
.688
1
,813
4-
ALPPH-TP
i(4
MIN. EACH SIDE)
VIEW LOOKING’ UP
O)
j
O)
0) O) Cg
VIELI
LOOI(ING
~OWN
SMM51-7
SPAR
CPjP
REPAIR
FIGURE
51-7
51-13-02
Island Enterprises