•
PIPER
COMANCHE
SERVICE
MANUAL
SECTION vne
POWEll PLANT
PA-l+Z60
(TUJUlOOIAJlGED)
7C-!. Introduction_
ThIS
",crion
coven
power
plalla
used in the PA-Z+Z60 Turbo Comanche and
is
comprised of instructions for
the
removal, minor repair,
JCMCC
and iDstaIlation
of
the engine cowling,
propeller, propeller
governor, engine, engine shock
mouna,
induction system, fuel injector, turbocharger,
fuelll1' bleed nozzles,
ignitiOD
system and lubrication system,
7C-Z. Description.
Tbe
PA-Z+Z60
Turbo
Comanche
is
powered
by
an Avco-Lycoming lo-S40-RIAS
.•
IX
cylinder, direct drive, wct sump, horizoncal opposed, fuel injected, air cooled engme with a compression
..
tio
of
8.S,
I,
..
ted
a
Z60
HP
at
2700
RPM, and designed to opcr&te
on
100/130 (minimum) octane
aviation
grade
fuel.
The
engine contains
componena
which make it suitable for turbochargi",.
Cowling completely
enclo
...
the
e",ine
and
consisa
of
twO hinged lide access panels, an upper and
lower section and a nose section.
The
cowl flaps are an integral pan
of
the
lower cowl and
ue
operued
manually
thro",h
mecbanicallinkace.
The
propeller
is
a HartZell constant speed,
cODtrOlied
by
a governor
mounted
on
the engine supplying
oil
through the propeller shaft
at
vanous pressures. Oil p
.......
'"
from
the
governor moves
the
blades
intO
b.gh pitch (Low RPM).
Tbe
cenmfugal twisting
moment
of
the blades move them .nto low pitch (High
RP."\).
The airplane's induction system consists of a dry
type
air
mter
and alternate air door.
The
""gine fuel
system
consIStS
of
a Bendix RSA-SADI
type
fuel injector and a Lcar-Scigler fuel supply pump
..
an integral
part
of
the fuel injector system. Two Rajay part number Rj008()'102 turbochargers are attached
to
the
engme.
Manu~
waste
pte
canacl
of
the
rurbochUJeT provldes the pilot
with
complete freedom
of
choice
in
turbocharger use. A push-pull control
is
installed for waste gate control.
Bcndi.x:·Scintilla S6LN-1200 scries magnetos
all:
installed on the engine. The system consists
of
two
magnetos
with "shower of sparks" retard points 1Il the left magneto. necessary for
sumng.
In addition to the aforementioned components. the engine
is
equi'Pped with an
alternuor.
a geared
surter
and vacuum pump.
The
engine
mount
is
steel tubmg constt'lcUon actached at
the
firewall and
incorporates VIbration
absorbing mounts. From the exhau.st stacks, gases are dll'ected to the turbocharger
Wute
gue,
through.
or
around the turbine.
15
requited.
md
overboard at the rear
of
the engine cowl. engtne
nacelle.
The
lubrication system
is
of the
fu.ll
pressure wet sump type.
The
oil pump. which
is
located
in
the
accessory housing. draws oil through a drilled passage
Inding
from the
ou
suction screen located
in
t~e
sump The oil from the pwnp then enters
a.
drilled pa.ssq:e in the accessory housing. which feeds the oil to a
threaded connection on
the rear
f~cc
of
che
accessory housing, where
a.
flexible line leads the
011
[0
the
external oil cooler. Pressure oil from the cooler returns
to
a.
second threaded connectl0n on the accessory
!'lou
5mB
from which
POlOt
a dnlled passage conducts the
au
to the oil pressure filter.
In
the event that cold
oil or an obstruction should restnct
the oil flow to the cooler. an all cooler by·pass valve is.proVlded
to
pass
the
oil elueedy from
Ute
oil pump to the oil pressure filter.
POWER
PLANT
ISSUED:
8/18172
2
G9
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