Supplement Airplane Maintenance Manual
Cessna 172 with TAE 125-02-99 / -114
AMM-20-02
Rev. No:
Rev. Date:
Chapter:
Issue:
Issue Date:
Page:
Content:
20-AMM-71-02
3
06.11.2013
1
46
1
25.08.2014
71
POWER PLANT
71.00
GENERAL
DESCRIPTION
The engine is a liquid-cooled in-line four-stroke 4-cylinder motor
with DOHC (double overhead camshaft). The engine is a direct
Diesel injection engine with common-rail technology and
turbocharged. The engine is controlled by a FADEC system. The
propeller is driven by a built-in gearbox
(i = 1.69) with mechanical vibration damping and overload
release. The engine has an electrical self starter and an
alternator.
Due to the specific characteristic, all of the information from the
airplane maintenance manual are no longer valid with reference
to:
•
carburetor and carburetor pre-heating
•
ignition magnetos and spark plugs, and
•
mixture control and priming system
Whole Assembly
The capacity is 1991 cm
3
, each cylinder has a displacement of
498 cm
3
. The TAE 125-02-99 engine produces 99 kW (134.6 hp)
at 2300 rpm (Propeller rotational speed) with a static
compression ratio of 18:1. The TAE 125-02-144 engine produces
114 kW (155 hp) at 2300 rpm (Propeller rotational speed) with a
static compression ratio of 18:1.
Crankcase
The aluminum crankcase is made using pressure die casting with
ductile iron liners, bore is 83 mm (3.27 in). The gauge for bore
holes is 90 mm (3.54 in). The crankcase main bearing caps are
cross-bolted to get maximum stiffness to weight. In normal
running the cylinder pressure is always less than 165 bar
(2393 psi).
CAUTION:
The engine requires an electrical power source for operation! If
the battery and alternator fail simultaneously, this leads to
engine stop. Therefore, it is important to pay attention to
indications of alternator failure.
Summary of Contents for Cessna 172
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