Piper Comanche PA-24 Service Manual page 565

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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