Piper Cherokee Six Service Manual page 402

PIPER CHEROKEE SIX SERVICE MANUAL
SECTION VIIA
POWER PLANT
(PA-32-300 and PA-32R-300)
7A-1. DESCRIPTION. The PA-32-300 and PA-32R-300 are powered by a Lycoming engine
of 300 horsepower. (Refer to Power Plant Specifications in Table II-I.) The engine is
furnished with a starter, 60 ampere, 12-volt alternator, voltage regulator, shielded ignition
system, vacuum pump drive, fuel pump, fuel injector and a dry paper type induction air
filter. In the event of air stoppage through the filter an alternate air source can be opened
when selected manually by the use of a lever in the cockpit.
The exhaust system for the PA-32-300 is stainless steel directing gases inboard to
mufflers located directly under the engine. The large muffler with a heater shroud provides
heat for both the cabin and defrosting.
The exhaust system for the PA-32R-300 consists of three individual mufflers combined
into one unit. Each set of opposing cylinders feeds into one muffler. A heat shroud encircles
the complete unit to provide heat for both the cabin and defrosting.
The engine is provided with a constant speed propeller controlled by a governor
mounted on the engine supplying oil through the propeller shaft at various pressures.
7A-2. TROUBLESHOOTING. Troubles peculiar to the power plant are listed in Table
VIIA-I along with their probable causes and suggested remedies. When troubleshooting the
engine, ground the magneto primary circuit before performing any checks of the engine.
7A-3. PROPELLER.
7A-4. REMOVAL OF PROPELLER.
a. Insure master and magneto switches are off.
b. Move fuel selector to off position.
c. Place mixture control in idle cut-off.
d. Note position of components to facilitate reinstallation.
e. Remove screws attaching spinner cuff and spinner assembly and remove spinner.
f. Remove the safety wire from the six propeller mounting bolts and remove the bolts
and propeller.
g. Place a drip pan under propeller to catch oil spillage, remove propeller.
h. It is recommended that for severe damage, internal repairs and replacement of parts,
the propeller should be referred to the Hartzell Factory or Service Station.
i. Grease blade hub through zerk fittings. Remove one of the two fittings for each
propeller blade, alternate the next time. Apply grease through the zerk fitting until fresh
grease appears at the fitting hole of the removed fitting. Care should be taken to avoid
blowing out hub gaskets.
POWER PLANT
Revised: 7/28/75
2G6