Technify Motors Cessna 172 User manual

Technify Motors GmbH
Platanenstraße 14
D - 09356 St. Egidien
Supplement
Airplane Maintenance
Manual
Cessna 172
TAE 125-02-99
(CD-135 / CENTURION 2.0)
TAE 125-02-114
(CD-155 / CENTURION 2.0 S)
Doc. No.: AMM-20-02
Version: 3/1
CAUTION:
This Supplement to the Airplane Maintenance Manual must
be read completely before maintenance action, as it
contains important safety information.
Note:
The Supplement to the Airplane Maintenance Manual is to
be included with every Cessna 172 / TAE 125-02-99 and TAE
125-02-114 installation
Note:
Please report any service difficulties to the Technical
Support Center at Technify Motors GmbH.
See above for contact information.
CAUTION:
The organizations and staff who carry out these
maintenance action must be approved by the authority,
with the exception of the “Pre-flight check“
Tel. +49-(0)37204/ 696-0
Fax +49-(0)37204/ 696-2912
www.continentaldiesel.de
support@continentaldiesel.de

Copyright ©
These technical data and the information contained therein are
the property of Technify Motors GmbH and may not be
reproduced either in full or in part or passed on to a third party
without written consent from
Technify Motors GmbH.
This text must be included in any full or partial reproduction of
this documentation.
Copyright © Technify Motors GmbH

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TABLE OF CONTENTS
0.1 LIST OF REVISIONS ....................................................1
0.2 LIST OF APPLICABLE CHAPTERS .............................2
01 INTRODUCTION...........................................................1
01.1 ACCOMPANYING APPLICABLE
DOCUMENTS ...............................................................1
01.2 IDENTIFICATION OF Components...............................2
01.3 CONVENTIONS IN THIS MANUAL ..............................4
01.4 VALIDITY OF THIS MANUAL .......................................5
01.5 ABBREVIATIONS .........................................................5
01.6 PACKING AND TRANSPORT.......................................5
01.7 STORAGE.....................................................................5
01.8 QUALIFICATIONS OF THE OPERATING AND MAIN-
TENANCE PERSONNEL..............................................5
01.9 UPDATE INFORMATION SERVICE.............................5
01.10 SERVICE LIFE OF THE ENGINE.................................6
01.11 CONVERSION FACTORS............................................7
04 AIRWORTHINESS LIMITATIONS, ISSUE 3................1
04.1 ENGINE LIFE LIMIT......................................................1
04.2 MANDATORY MAINTENANCE ACTIONS ...................1
04.3 LOG OF REVISIONS TO AIRWORTHINESS LIMITATI-
ONS...............................................................................2
05 TIME LIMITS / MAINTENANCE CHECKS ...................1
05.10 TIME LIMITS .................................................................2
05.20 SCHEDULED MAINTENANCE CHECKS.....................2
05.50 UNSCHEDULED MAINTENANCE................................7
06 DIMENSIONS AND AREAS .........................................1
06.1 MODEL..........................................................................1

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06.2 ENGINE.........................................................................1
06.3 PROPELLER.................................................................2
06.4 FUEL SYSTEM .............................................................2
11 Placards and Markings ...............................................1
11.00 Exterior Placards and Markings.....................................1
11.10 Interior Placards ............................................................2
12 SERVICING...................................................................1
12.00 GENERAL .....................................................................1
12.10 REPLENISHING............................................................4
12.20 SCHEDULED SERVICING............................................7
20 STANDARD PRACTICES - AIRFRAME ......................1
20.00 GENERAL .....................................................................1
20.10 Standard Torque Values ...............................................1
20.20 Firewall Sealants...........................................................3
21 ENVIRONMENTAL SYSTEMS.....................................1
21.00 GENERAL .....................................................................1
24 ELECTRICAL POWER.................................................1
24.00 GENERAL .....................................................................1
24.30 DC GENERATION.........................................................2
24.50 ELECTRICAL LOAD DISTRIBUTION...........................9
28 FUEL.............................................................................1
28.00 GENERAL .....................................................................1
28.20 DISTRIBUTION.............................................................2
28.40 INDICATING................................................................13
31 INDICATING / RECORDING SYSTEMS ......................1

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31.50 CENTRAL WARNING SYSTEMS.................................1
31.60 INDICATING INSTRUMENTS ......................................3
31.70 Sensors ........................................................................6
37 VACUUM.......................................................................1
37.00 GENERAL .....................................................................1
61 PROPELLER ................................................................1
61.10 CONSTANT SPEED PROPELLER...............................1
61.20 CONSTANT SPEED UNIT............................................1
71 POWER PLANT............................................................1
71.00 GENERAL .....................................................................1
71.20 MOUNTS.....................................................................30
71.40 ATTACH FITTINGS.....................................................32
71.60 AIR INTAKES .............................................................41
73 ENGINE FUEL SYSTEM...............................................1
73.00 GENERAL .....................................................................1
74 IGNITION ......................................................................1
74.00 GENERAL .....................................................................1
75 LIQUID COOLING.........................................................1
75.00 GENERAL .....................................................................1
77 ENGINE INDICATION...................................................1
77.00 GENERAL .....................................................................1
78 EXHAUST .....................................................................1
78.00 GENERAL .....................................................................1

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79 OIL ................................................................................1
79.00 GENERAL .....................................................................1
79.30 INDICATING..................................................................5
80 STARTING....................................................................1
80.00 GENERAL .....................................................................1
91 CHARTS AND WIRING DIAGRAMS............................1
91.10 WIRING DIAGRAMS.....................................................1
91.20 SPECIAL TOOLS........................................................39

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0.1 LIST OF REVISIONS
Chapter Issue/
Revision Date Approved by
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01 INTRODUCTION
This operating and maintenance manual contains basic
information related to the proper operation of the engine in
various situations and under different conditions. It also contains
instructions for maintenance.
The information and descriptions of components and systems in
this manual were correct at the time of publication. Any
amendments released through the update information service
must also be taken into account.
PleasecontactTechnifyMotorsGmbH if you have any questions.
We would be glad to assist you further.
01.1 ACCOMPANYING APPLICABLE
DOCUMENTS
•Aircraft manufacturer's Service Manual
•Aircraft manufacturer's Airplane Maintenance Manual
•Engine Installation Manual IM-02-02
•Kit Installation Manual IM-20-02
•Repair Manual RM-02-02
•Operation and Maintenance Manual OM-02-02
•Operation and Installation Manual E-124 for Propeller
MTV-6-A/187-129
•Installation Manual IM-TAE-CED-125 and Operation
Manual OM-TAE-CED-125
•Installation Manual IM-TAE-AED-125 and Operation
Manual OM-TAE-AED-125
•GILL Battery Service Manual
•Panasonic Valve Regulated Lead Acid batteries Technical
Handbook
http://industrial.panasonic.com/eu/index.html
•Component Repair Manual CRM-02-02

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01.2 IDENTIFICATION OF Components
Engine identification
The serial number of the engine is provided on the type plate on
the crankcase near the starter flange.
Example:
Figure 1 Type Plate
Note: When making inquiries, always have the serial number of the
engine ready.

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Engine Mount identification
The engine mount is indicated by a part number and a serial
number as shown in the following picture. The first part
constitutes the part number, the last four digits are the serial
number.
Figure 2 Identification of Engine Mount
AED/CED identification
The AED and CED are indicated by a label as shown below.
As an example the identification label of an AED is shown, the
layout of the CED-label is similar.
Figure 3 Identification Label AED-125
20-7210-H00000X-XXXX
P/N S/N

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Propeller identification
The serial number of the propeller MTV-6-A/187-129 consists of
five digits and is provided at the back side of the propeller flange
and on a label at the front side of one propeller blade.
01.3 CONVENTIONS IN THIS MANUAL
The following symbols and warning signs are used in the manual.
They must be heeded strictly to prevent injury and material
damage, to avoid impairment of the operating safety of the
aircraft and to rule out any damage to the aircraft as a
consequence of improper handling.
The indications "right", "left", "front" and "rear" are always relative
to the flight direction. The following symbol is used:
Example of flight direction right:
WARNING: Disregarding these safety rules can lead to injury or even death.
CAUTION: Disregarding these special instructions and safety measures
can cause damage to the engine or to the other components.
Note: Additional note or instructions for better understanding of an
instruction.

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01.4 VALIDITY OF THIS MANUAL
This manual applies only to the engine having the following:
serial number:_________________________________
Installed in Cessna 172 type:___
serial number:_________________________________
Updates and modifications must be taken into account.
01.5 ABBREVIATIONS
The following abbreviations are used in this manual:
•FADEC, Full Authority Digital Engine Control
•AED, Auxiliary Engine Display
•CED, Compact Engine Display
•CSU, Constant Speed Unit
01.6 PACKING AND TRANSPORT
According to the Operation and Maintenance Manual OM-02-02.
01.7 STORAGE
According to the Operation and Maintenance Manual OM-02-02.
01.8 QUALIFICATIONS OF THE OPERATING AND
MAINTENANCE PERSONNEL
Tasks described in this manual may be performed only by trained
personnel having necessary certificates and licenses.
All locally applicable national and international regulations must
be observed.
01.9 UPDATE INFORMATION SERVICE
This manual is updated regularly. The engine/ aircraft operator is
responsible for keeping up-to-date with all amendment bulletins
issued by Technify Motors GmbH and integrating them into this
manual.
Please inform Technify Motors GmbH if the owner of the engine
/aircraft changes. This is the only way to ensure that information
about any necessary/recommended changes to the engine/
manual can be passed on. A form for this purpose is included in
this manual.

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01.11 CONVERSION FACTORS
Table 01-1a Conversion Factors - Length
Table 01-2a Conversion Factors - Speed
Table 01-3a Conversion Factors - Pressure
Table 01-4a Conversion Factors - Force
CAUTION: The US units in this manual are only benchmarks! These con-
version factors shall be used in case of any doubt!
Unit [Abbreviation] Conversion Factor Conversion Factor
SI to US / Imperial US / Imperial to SI
Meter [m] [m] / 0.3048 = [ft]
Millimeter [mm] [mm] / 25.4 = [in]
Kilometer [km] [km] / 1.852 = [nm]
[km] / 1.609 = [sm]
Inch [in] [in] x 25.4 = [mm]
Foot [ft] [ft] x 0.3048 = [m]
Nautical mile [nm] [nm] x 1.852 = [km]
Statute mile [sm] [sm] x 1.609 = [km]
LENGTH
Unit [Abbreviation] Conversion Factor Conversion Factor
SI to US / Imperial US / Imperial to SI
Kilometers per hour [km/h] [km/h] / 1.852 = [kts]
[km/h] / 1.609 = [mph]
Meters per second [m/s] [m/s] / 196.85 = [fpm]
Miles per hour [mph] [mph] x 1.609 = [km/h]
Knots [kts] [kts] x 1.852 = [km/h]
Feet per minute [fpm] [fpm] / 196.85 = [m/s]
SPEED
Unit [Abbreviation] Conversion Factor Conversion Factor
SI to US / Imperial US / Imperial to SI
Bar [bar] [bar] x 14.5038 = [psi]
Hectopascal [hpa]=Millibar[mbar] [hpa] / 33.864 = [inhg]
[mbar] / 33.864 = [inhg]
Pounds per square inch [psi] [psi] / 14.5038 = [bar]
Inches of mercury column [inHg] [inHg] x 33.864 = [hPa]
[inHg] x 33.864 = [mbar]
PRESSURE
Unit [Abbreviation] Conversion Factor Conversion Factor
SI to US / Imperial US / Imperial to SI
Newton [N] [N] / 4.448 = [lb]
Decanewton [daN] [daN] / 0.4448 = [lb]
Pound [lb] [lb] x 4.448 = [N]
[lb] x 0.4448 = [daN]
FORCE

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Table 01-5a Conversion Factors - Mass
Table 01-6a Conversion Factors - Volume
Table 01-7a Conversion Factors - Torque
Table 01-8a Conversion Factors - Temperature
Unit [Abbreviation] Conversion Factor Conversion Factor
SI to US / Imperial US / Imperial to SI
Kilogram [kg] [kg] / 0.45359 = [lb]
Pound [lb] [lb] x 0.45359 = [kg]
MASS
Unit [Abbreviation] Conversion Factor Conversion Factor
SI to US / Imperial US / Imperial to SI
Liter [l] [l] / 3.7854 = [US gal]
[l] / 0.9464 = [US qt]
[l] / 4.5459 = [Imp gal]
[l] / 61.024 = [in
3
]
US gallon [US gal] [US gal] x 3.7854 = [l]
US quart [US qt] [US qt] x 0.9464 = [l]
Imperial gallon [Imp gal] [Imp gal] x 4.5459 = [l]
Cubic inch [in
3
][in
3
] x 61.024 = [l]
VOLUME
Unit [Abbreviation] Conversion Factor Conversion Factor
SI to US / Imperial US / Imperial to SI
Newton meter [Nm] [Nm] / 1.3558 = [ft.lb]
[Nm] x 8.851 = [in.lb]
Foot pound [ft.lb] [ft.lb] x 1.3558 = [Nm]
Inch pound [in.lb] [in.lb] / 8.851 = [Nm]
TORQUE
Unit [Abbreviation] Conversion Factor Conversion Factor
SI to US / Imperial US / Imperial to SI
Degree Celsius [°C] [°C] x 1.8 + 32 = [°F]
Degree Fahrenheit [°F] ([°F] - 32) / 1.8 = [°C]
TEMPERATURE

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04
AIRWORTHINESS LIMITATIONS, ISSUE 3
04.1 ENGINE LIFE LIMIT
The entire engine as defined by the Type Design Definition ref.
TDD-02-02, issue 1 or later approved revisions has a specific life
limit according to service bulletin TM TAE 125-0001. This limit
calls for replacement of the entire engine. No overhauls are
allowed to the core engine. No repairs outside the published
ICA´s allowed to the engine.
04.2 MANDATORY MAINTENANCE ACTIONS
Mandatory maintenance actions of the engine are listed in
Chapter 02-OM-05-02 of the current Operation and Maintenance
Manual OM-02-02.
AIRWORTHINESS LIMITATIONS
AIRWORTHINESS LIMITATIONS APPROVAL SHEET
The Airworthiness Limitation Section is EASA approved and
mandatory. It specifies required maintenance unless an alternative
program has been EASA approved.

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04.3 LOG OF REVISIONS TO AIRWORTHINESS
LIMITATIONS
AIRWORTHINESS LIMITATIONS
Rev. No Description of Revision

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05 TIME LIMITS / MAINTENANCE CHECKS
The maintenance work on Centurion aircraft engines must be
carried out after specific time intervals or on reaching a specific
operating hours interval. The Preflight check must be conducted
before each start.
Parts that are not included within the scope of supply of the
engine must be maintained and checked according to the
airplane manufacturer's specifications (refer to airplane manual).
WARNING: The entire engine has a service life ("time between
replacement"); refer to Chapter 04 of this manual.
WARNING: It is strongly recommended that the maintenance intervals
specified by the manufacturer should be adhered to. Non-
compliance with the maintenance schedule can amongst other
things lead to lapse of any claims to warranty.
Note: For this engine, an extension program for the service life (time
between replacement) is in progress. The up-to-date information
is published in service bulletins.
Note: Further information concerning service partners and servicing or
parts to be replaced can be obtained from Technify Motors
GmbH.
Note: Technify Motors GmbH must be informed immediately in case of
engine malfunction.

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05.10 TIME LIMITS
INSPECTION REQUIREMENTS
The required periodic inspection procedures are listed in 5.20
Scheduled Maintenance.
PREFLIGHT CHECKS
Perform a thorough preflight and walk-around check in addition
to inspection intervals in periodic inspections.
Pilot or mechanic must include preflight check as normal
procedure necessary for safe aircraft operation.
Refer to the Supplement of the Pilot´s Operating Handbook for
items that must be checked.
05.20 SCHEDULED MAINTENANCE CHECKS
A. PROPELLER GROUP
Refer to Operation and Installation Manual of MT-Propeller E124
(ATA 61-01-24) for Inspections and Maintenance of the propeller
MTV-6-A-/187-129.
B. ENGINE GROUP
Note: If propeller nuts need to be replaced, nuts NM-0000-00268 01
can be used alternatively when installing the propeller.
WARNING: Under extreme conditions such as low usage combined with
operation in a salt water environment or in an environment laden
with sand and dust, shorter maintenance and inspection
intervals are recommended for your own safety.
Note: Due to the Diesel principle of the engine, all information of the
Airplane Maintenance Manual relating to
- Carburetor and carburetor pre-heating
- Ignition magnetos and spark plugs and
- Mixture control and priming system
are no longer valid.