Mooney M20M - Page 222

SERVICE
AND
MAINTENANCE
MANUAL
M20M
´•MOONC/
AIRCRAFT
CORPORATION
Drill
out
the
crack,
smooth the hole
edges,
weld
the
2.
INNER SLEEVE SPLICING.
Use
an
inner
sleeve
hole
or
dent,
and file the
repaired
surface
smooth.
splice
to
partially replace
a
tube without
increasing
the
Form
a
patch
that
will
cover
twice
the
diameter
of
the
outside diameter
(see Figure
51-2).
tube
around the
edge
of
the
damaged
area
and
twice
A. Make
a
30-degree
cut to
remove
the
damaged
the
circumferential
area
of
damage
as
shown
in
portion
of
the
tube; then,
remove
the burr
from
the
(Figure
51-1).
Weld
patch
in
place,
remaining
end.
B. Cut
a
replacement
tube
of
the
same
material
(AISI
4130
steel,
condition
N),
same
diameter and
the
same
wall
thickness
as
the
original
tube.
IF NOT
GREATER
THAN
"A"
(DTAM, OF
TUBE:,
1/4
OF TUBE
CIRCUM, (MAX,>
I,
2A
,I,
Y
,I,
2A
I
DAMAGE
WELDED
PATCH
-LOCAL DAMAGE
REPAIR FIGURE
51-1
II
A
;I
I
r 1
300
I
--r
--~-yrp
--I--
Al X I xC~
SLEEVE
A
I
C
1/2A
ORIGINAL
REPAIR
TUBE
TUBE
L
ROSETTE
WELD
REPLACEMENT
INSIDE
TUBE
LEAVE
1/8 IN,
CAP
FOR
WELDING
ROSETTE
WELD
300
r
REPAIR
1/2A
1/2A
SLEEVE
TUBE
INSIDE
5A
INNER SLEEVE
SPLICING
FIGURE
51-2
51-12-01
4-99
OLDWILLWAYNE