Mooney M20M - Page 323

SERVICE
AND
MAINTENANCE
MANUAL
M20M
MOONEY AIRCRAFT
CORPORATION
78-00-00
GENERAL A.
Spray engine
exhaust
system
components
with
The
exhaust
system’s
headers,
exhaust
pipes
and
a
suitable
solvent
(Stoddard
Solvent),
allow
to
drain
turbocharger
interface
components
are
manufactured
by
and
wipe
dry
with clean
cloth.
Textron-Lycoming.
The
turbocharger
is
manufactured
by
WARNING
Garrett-Airesearch
(See
SECTION
81)
Never
use
highly
flammable solvents
on
engine
Inspections
for
cracks,
burns,
etc,
are
required
during
exhaust
systems.
each
maintenance
activity
and
recommended before
WARNING
each
flight.
Never
use
a
wire
brush
or
abrasives to
clean
78-10-00
EXHAUST SYSTEM
exhaust
systems
or
mark
on
system
with
lead
INSTALLATION
pencils.
Reference
Lycoming
Service Instruction No.
1422A
(or
2´•
VISUAL
INSPECTION
OF
COMPLETE SYSTEM
later
revision)
for
inspection
and
installation.
A
thorough inspection
of
engine
exhaust
system
will
1.
EXHAUST PIPE HEADERS TO
ENGINE
detect
any
breaks
or
cracks
causing
leaks
which
might
result
in
loss
of
efficiency,
loss
of
engine
power
or
A. Place
new
exhaust
gaskets
in
position
on
LH
engine
compartment
fire.
Inspect
per
following
RH
engine
exhaust
flange
studs.
procedures:
B.
Place
RH
header
pipe
into
position
on
engine
NOTE
cylinder
exhaust
flanges.
Ensure
that
the exhaust
gaskets
remain
in
proper
position
on
each
cylinder
This
inspection
should be conducted
when
exhaust
flange.
engine
is
cool.
C.
Position
crossover
pipe
into
position.
Remove
all
muffler
shrouds/shields
to
permit
full
visual
inspection.
D.
Place
LH header
pipe,
fwd
2
cylinders,
into
position
on
engine
exhaust
fianges.
Ensure
that
the
A. LOOK FOR
LEAKS
Examine surfaces
exhaust
gaskets
remain
in
proper
position
on
each
adjacent
to
exhaust
system
components
for
signs
of
cylinder
exhaust
flange.
exhaust
soot.
Look for
gray,
red
or
black
gas
stains
at
welds,
clamps,
flanges,
etc.
Inspect
exhaust
system
for
E.
Position
exhaust/turbocharger
transition
pipe
chaffing
by
cowling, engine
mount,
cables
or
any
assembly
onto
engine
exhaust
Range
loosely.
airframe
components.
F. Position
2.0
inch
V-Band
gasket
and
2.0
inch
V-Band
Inspect
exhaust stacks
for burned
areas,
cracks and
coupling
onto
LH
header
and
~nsition
pipe.
looseness.
G.
Secure
all
nuts
on
exhaust
flanges.
B.
LOOSE
CONNECTIONS
Inspect
exhaust
H. Place
exhaust
manifold
retaining
cable
in
clamps
for
cracks,
looseness
and
proper
security.
position
and
attach
to
clamp
adjacent
to
center
ring
of
NOTE
crossover
pipe.
Adjust
slack
out
of
retaining
cable
so
During
inspection, particular
attention
should
crossover
pipe
is
held
securely.
Cabin heat
shroud
will
be
given
to
condition
and
security
of
flanges,
be
placed
into
position
and
secured
spot
welds,
slip
joints,
and
welded
areas.
i.
Position
Turbocharger
onto
mounting pad
of
C.
INTERNAL
EROSION
Examine
bends
and low
exhaust transition
pipe.
Secure bolts and
nuts
of
spots
for
thinning
or
pitting.
turbochargerltransition pipe
mount.
D.
STANDOFFS
(PINS)
AND
HEAT
TRANSFER
J.
Position
Bypass
valve
on
to
transition
pipe
with
FINS Look for
missing
or
damaged
heat
transfer
pins
2.25
inch
V-Band
gasket
and
2.25
inch
V-Band
clamp.
or
fins.
Look for holes
at
these
locations.
K.
Position
bypass
pipe
onto
bypass
valve
at
same
E. METAL
FATIQUE
Inspect
all
surfaces
for
time
tailpipe
is
attached
to
turbocharger.
bulging
and distrotion and
for
groups
of small
cracks.
L. Secure
tailpipe
V-Band
clamp
and
bypass
pipe.
CAUTION
M.
Attach
oil lines
to
bypass
valve from
DO
NOT mark
any
surface
with
lead
pencils
or
turbocharger
controller,
wastegatel
etc,
and
oil and
any
carbon-containing
markers.
drain
lines
to
turbocharger.
Secure all connections.
F.
BAFFLE BREAKDOWN
Look
inside
muffler
for
N. Position
and
secure
TIT
probe
land
any
other
broken
baffles
or
tubes.
These
can
restrict
the
outlet,
temperature
probe
connections,
if
installed).
causing
power
loss.
78-30-00
EXHAUST
SYSTEM
SERVICING
G.
HIDDEN DAMAGE
Carefully
inspect
all
internal
surfaces
that lie
hidden
under
external
CAUTION
gussets,
stiffners,
etc.
(A
borescope
is
recommended
A
repetitive
50
hour
inspection
is
recommended
t,inspect
intemal
conditions)
for
exhaust
system
and
TIT
probe
and
gauge.
Ref.
Lycoming
SI 1422A.
H.
INSTALLATION
TIPS
Install
only
correct
parts.
1. CLEANING
DO
NOT
FORCE FIT
any
component.
Properly
align
connecting
components.
To
properly
inspect
exhaust
system,
components
must
Do
not
reuse
gaskets.
be clean
and
free
of
oil,
grease,
etc.
Clean
as
follows:
Insure that
attach
bolts
are
properly
torqued
Exhaust
flange
stud
nuts
are
to be
torqued
to 100-110
inch Ibs.
4-99
78-00-00
OLDWILLWAYNE