PIPER
COMANCHE
SERVICE
MANUAL
1B-19. InciucDon
Synan
Air
Filter.
7B-20.
Removal
Of
Air Fi1ur.
L Remove
the
bottom
cowl access
pan.l
by loosening the quarter
nun
fast
.......
b. LooteD clamp and remove air
intak.
bose from filter box.
c.
R.l
....
the
futen
...
and ",move
the
air box.
d.
Ranov.
the air filter from the air box.
7B-21.
Servic:c
l..-scdona.
a.
Tb.
fLiter
should
be
cleaned daily
wh.n
opcratin.
in dusty conditiollS and
if
any holes or
tcan
are
noticed.
the filter should be "'Placed immediately.
b.
R.mo
...
the filter elem""t and shake
off
loose dirt by
cappm,
on
a
bud
surface. being car.ful
not
to
damqe
or
crease the scaIi"l ends.
CAUTION
Never
wash
the filter
elem.nt
in any uquid
or
soak in oil. Sever
attempt
to
blow off
dirt
with compressed air.
7B-22.
Inscallation
Of
Air
Filter.
a.
Place air fLlter in air
box
and
inaeai1
on
baclting
pl&t
•.
b. Secure
box
to
plate with camloc f
....
nen.
c.
Install air
intak.
hose
on
ruter box and secure with clamp.
d.
Inaeai1
bottom
cowl access plare and secure with f
....
nen..
7B-23. AltcnWC
Air
Door. The alternate air
door.loaRd
in the induction
Iy"em
on
the back side of [he
injector air box. is
to
proVIde
a.
source of
a.i.r
should there be
UI
air
slapp.
through the mler system. The
following Ihould
b.
ch.cked
duri"l
inspection,
•.
All door
seals
arc
u,ht
and
hm,es
secua:.
b.
Actuate the door to detennlne
that
it
is
not
stick.a.ng
or binding.
c.
Check
that
rhe
.prin&
tension
of
the door
is
n,ht
enough
to
allow the door to rcm:un closed
at
full
engine
RP."i, yet should thea: be an air
ItOpp~
it
will
be drawn open.
iB·H.
Fucllnjecror.
7B·ZS
Fu.llnjector
.\Iainlenance.
a..
In general. little attention
is
required between injector overhauls. However. it
is
recommended that
the following items
be checked during penodic inspection of the engine.
I.. Check tighmess and lock
of
all
nuu
and screws
wh.ich
futen
the Injector to the engine.
2.
Check.J.11
fuel lines for tightness and eVldence
of
leakage. A slight fuel
su..in
adja.cent to
the
air
bleed nozzles
is
nOt
cause for concern.
2
F6
POWER
PLANT
ISSUED:
8118172
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