This manual incorporates maintenance and service information contained in Continental Aerospace Technologies™
Service Documents common to the horizontally opposed, spark ignition, aviation gasoline (AvGas) engines
conforming to Type Certificate held by Continental Motors, Inc. This document is supplemental to the Instructions
for Continued Airworthiness provided in the manuals listed in Section 1-1.1. Instructions contained in the Service
Documents listed in Section 1-2.4 are superseded by instructions in this manual upon release, except for those
Mandatory Service Bulletins (MSBs) and Critical Service Bulletins (CSBs) linked to Airworthiness Directives.
Effective Changes for this Manual
0 ..... 15 September 2019
1 ...........1 February 2021
2 ............26 August 2021
3 ............ 6 January 2023
List of Effective Pages
Document Title: Standard Practice Maintenance Manual
Publication Number: M-0Initial Publication Date: 15 September 2019
Standard Practice Maintenance ManualB
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Preface
This manual was developed in accordance with Title 14, Code of Federal Regulations (CFR) Part
33, §33.4 as the Instructions for Continued Airworthiness (ICA) for Standard Practices.
Continental Motors, Inc.provides ICAs based on the design, testing, and certification of engines
and parts. Continental Motors, Inc. is the holder of the Type Certificate (TC) or Parts Manufacture
Approval (PMA) issued by the Federal Aviation Administration (FAA). Instructions in
Continental manuals, which include maintenance, repair limits, and overhaul instructions, are
applicable only to Continental Aerospace Technologies™ (Continental®) engines and parts.
Except for authorized owner preventive maintenance (defined in Title 14, Code of Federal
Regulations (CFR) Part 43 §§43.3 and 43.13), Continental ICAs are written for exclusive use by
FAA (or equivalent authority) licensed mechanics or FAA (or equivalent authority) certified
repair station employees.
Information and instructions contained in this manual anticipate the user possesses and applies the
knowledge, training, and experience commensurate with the requirements to meet the prerequisite
FAA license and/or certification requirements. No other use is authorized. It is the responsibility
of the owner to verify the mechanic or facility operating, maintaining, or servicing the engine uses
the most current ICA, including manual change pages, service documents, and FAA
Airworthiness Directives (ADs), to perform those functions.
Aftermarket parts installed on a Continental engine constitutes a deviation from type-design
criteria. Continental has not participated in design, test, or certification of any aftermarket parts.
Continental does not provide product manufacturing specifications to aftermarket parts
manufacturers and accepts no liability for the suitability, durability, longevity, or safety of such
parts installed on Continental engines. Installation of aftermarket parts on a Continental engine
must be performed using ICAs prepared by the manufacturer and found acceptable by the FAA
for the subject installation. Continental ICAs must not be used for such parts.
WARNING
Ensure you have the latest revision of this manual, any
applicable change pages, FAA Airworthiness Directives and
Continental service documents prior to commencing engine
service, inspection, maintenance, or overhaul.
To facilitate the use of current data, Continental provides the latest information on the Continental
web site (http://www.continental.aero). This information (applicable to current versions) includes
an index of manuals, links to active service documents, FAA Airworthiness Directives, and other
information applicable to the ICAs. Additionally, Continental technical publications (the current
version in electronic or printed format) are available through our publications distributor, Aircraft
Technical Publishers (ATP) (www.atp.com). Refer to “Related Publications” in Section 1-2.5. for
additional information about service subscriptions and ATP contact information (see Table 1-2).
Standard Practice Maintenance Manuali
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iiStandard Practice Maintenance Manual
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Table of Contents
TABLE OF CONTENTS
Chapter 1. Introduction
1-1. Scope and Purpose of This Manual.............................................................................................. 1-1
1-1.1. Instructions for Continued Airworthiness........................................................................... 1-1
1-2.3. Update/Change Distribution ...............................................................................................1-8
1-2.4. Service Documents ........................................................................................................... 1-10
1-2.4.1. Service Documents Incorporated in this Manual.................................................... 1-11
1-2.4.2. Service Documents Released After Publication ..................................................... 1-13
1-2.5. Related Publications ......................................................................................................... 1-15
1-2.5.1. Suggestions and Corrections................................................................................... 1-15
1-3. Contact Information ................................................................................................................... 1-16
1-4. Service Parts............................................................................................................................... 1-16
1-4.1. Service Part Applicability and Availability....................................................................... 1-16
1-4.2. Part Supersedure ............................................................................................................... 1-16
Chapter 2. Tools
2-1. Special Tools ................................................................................................................................ 2-1
2-1.1. Vendor Contact Information ...............................................................................................2-7
Figure C-11. Installing Hoses and Fittings .....................................................................C-24
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xviiiStandard Practice Maintenance Manual
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Chapter 1. Introduction
1-1. Scope and Purpose of This Manual
This manual provides maintenance instructions for spark ignition, piston aircraft engines
operating on aviation gasoline (AvGas). These Instructions for Continued Airworthiness
(ICAs) are supplied to the owner with the engine. Instructions in this manual are standard
practices, with differences identified by model, for A-65, A-75, C-75, C-85, C-90, C-125, C145, E-165, E-185, E-225, O-200, O-240, IO-240, IOF-240, GO-300, O-300, IO-346, IO360, LTSIO-360, TSIO-360, O-470, IO-470, TSIO-470, GTSIO-520, IO-520, LTSIO-520,
TSIO-520, IO-550, IOF-550, TSIO-550, TSIOF-550, TSIOL-550 and TIARA (6-285 and 6-
320) series aircraft engines. For information specific to the Continental engine series,
accessories, or the airplane, refer to the appropriate manual. For the specific instructions
regarding the electronic equipment on FADEC engines, or for unlisted engine models, refer
to the primary ICA.
A list of tools for all applicable engines is provided in Chapter 2. Consumables items, such
as lubricants, sealants, and adhesives are listed in Chapter 3. Airworthiness limitations are
in Chapter 4. Chapter 5 contains generic installation instructions applicable to our engines.
Chapter 6 provides schedule inspection and service intervals and instructions, as well as
unscheduled maintenance instructions. Chapter 7 contains general engine operating
instructions, applicable to all models. Chapter 8 contains engine troubleshooting
instructions. Engine preservation and storage instructions are in Chapter 9. Non-overhaul
engine part replacement instructions are in Chapter 10. Chapter 11 contains NonDestructive Inspection guidelines. Chapter 12 contains part cleaning instructions.
Appendix A contains a glossary of common terms and acronyms used throughout the
manual; Appendix B provides torque specifications, and Appendix C contains
maintenance standards.
Introduction
1-1.1. Instructions for Continued Airworthiness
CAUTION: Instructions in Continental document number
M-0, Standard Practice Maintenance Manual, do not apply and shall
not be used to maintain Continental Prime or Titan engine products.
Continental document Part No. M-0, is supplemental, as defined by Title 14 CFR§33.4, to
the maintenance and overhaul manuals listed below. Together, this manual and those listed
below comprise the instructions for continued airworthiness for applicable engines. This
manual, and the overhaul manuals and component service manuals (as applicable to
engine specification) listed below are delivered to the customer with the engine. Service
documents and Airworthiness Directives may also affect ICAs. Refer to Section 1-2.5 for
instructions to check current publication status.
Part No.TitleApplicability
M-2Maintenance and Overhaul ManualO-200-D, X
M-6Maintenance and Overhaul ManualIO-240
M-7Maintenance and Overhaul ManualIO-360
M-8Maintenance and Overhaul ManualL/TSIO-360
Standard Practice Maintenance Manual1-1
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Introduction
M-11Maintenance ManualIO-520 Permold
M-16Maintenance and Overhaul ManualIO-550 Permold
M-18Maintenance and Overhaul ManualTSIO-550 Permold
M-22Maintenance and Overhaul ManualIOF-240
M-24Maintenance Manual
M-26Maintenance and Overhaul ManualTSIOF-550
M-34Maintenance and Overhaul ManualGTSIO-520-S
OH-15Overhaul ManualTSIOL-550-C
OH-24Overhaul ManualIOF-550
OMI-15Operation, Maintenance and TSIOL-550-C
X30092Overhaul ManualO-240 (Rolls-Royce)
X30144Overhaul ManualTIARA 6-285 and 6-320
X30531Alternator Service InstructionsContinental alternators
X30574Overhaul ManualTSIO-520-B, BB, BE, D, DB,
X30575Overhaul ManualLTSIO-520-AE
X30586Overhaul ManualO-470-A, B, E, G, J, K, L, M
X30588Overhaul ManualIO-470-C, D, E, F, G, H, J, K,
X30592Starter Service InstructionsEnergizer® starters
X30600Overhaul ManualTSIOL-550-A
X30601Maintenance and Operator’s ManualTSIOL-550-A
X30605Maintenance ManualIO-550-D, E, F & L
X30607Overhaul ManualIO-550-D, E, F & L
IOF-550-A, B, C, G, N, P & R
Installation Manual
M, N
DB, E, EB, J, JB, K, KB, L,
LB, N, NB, U, UB, VB,
WB Permold series
TSIO-520-C, CE, G, H, M, P,
R, T, AE, AF Sandcast series
R, S, U
L, M, N, P, R, S, U, V, VO
1-2
CHANGE 3
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1-1.2. Advisories
FWDFWD
AFTAFT
EZREZR
SKYSKY
This manual utilizes three types of advisories; defined as follows:
A warning emphasizes information which, if disregarded, could
result in severe injury to personnel or equipment failure.
CAUTION: Emphasizes certain information or instructions, which if
disregarded, may result in damage to the engine or accessories.
NOTE: Provides special interest information, which may facilitate
performance of a procedure or operation of equipment.
Warnings and cautions precede the steps to which they apply; notes are placed in the
manner which provides the greatest clarity. Warnings, cautions, and notes do not impose
undue restrictions. Failure to heed advisories will likely result in the undesirable or unsafe
conditions the advisory was intended to prevent. Advisories are inserted to ensure
maximum safety, efficiency, and performance. Abuse, misuse, or neglect of equipment can
cause eventual engine malfunction or failure.
1-1.3. Effectivity Symbols
Variations in engine configuration may require specific instructions or illustrations. When
information pertains to only a subset of the applicable engine models, an effectivity
symbol will precede the information. Effectivity symbols found in this publication are:
Introduction
WARNING
Forward Mounted Gear Driven Alternator
Aft Mounted Gear Driven Alternator
Energizer Starter
SkyTec Starter
Standard Practice Maintenance Manual1-3
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Introduction
1-1.4. Using this Manual
This manual, the primary engine ICA listed in Section 1-1.1, applicable FAA ADs and
Continental service documents, the accessory manuals listed in Table 1-2, and all changes
incorporated in the ICAs as revisions constitute the Instructions for Continued
Airworthiness (ICAs) prepared by Continental and accepted by the FAA. We prepared this
manual in a user-friendly format suited equally for electronic viewing and print.
Illustrations in this manual are for reference only, depicting the most prominent
configuration in the engine series. Consult the electronic illustrated parts catalog for
engine model-specific illustrated parts breakdowns. The current information available
from Continental must be used to perform engine service, repair or overhaul.
Continental provides Instructions for Continued Airworthiness based on the design,
testing, and certification of engines and parts for which Continental Motors, Inc. is the
holder of the Type Certificate (TC) or Parts Manufacture Approval (PMA) issued by the
Federal Aviation Administration (FAA).
Continental ICAs are applicable only to Continental engines
conforming to the approved, type certified engine model
configuration. Continental ICAs must not be used for
aftermarket parts or products modified by Supplemental Type
Certificate.
WARNING
Installation of aftermarket parts on a Continental engine constitutes a deviation from typedesign criteria. Continental has not participated in design, test, or certification of any
aftermarket parts. Continental does not provide product manufacturing specifications to
aftermarket parts manufacturers and accepts no liability for the suitability, durability,
longevity, or safety of such parts installed on Continental engines. Installation of
aftermarket parts on a Continental engine must be performed using Instructions for
Continued Airworthiness prepared by the manufacturer and approved by the FAA for the
subject installation. For work with the engine installed in the aircraft, the aircraft
maintenance manual may also be required to gain access to, perform maintenance, or
install some items. Use only the current information from the aircraft manufacturer.
Exploded assembly illustrations accompany instructions throughout the manual. Parts in
illustrations (Figure 1-1) are identified with either alpha or numerical callouts (indexes).
Corresponding parts listings follow the illustrations for reference. The first time
instructions refer to an illustration, the figure number is identified in parentheses, followed
by the callout. In subsequent parts references, only the callout will be specified unless the
referenced illustration changes.
1-4Standard Practice Maintenance Manual
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Introduction
Figure 1-1. Figure and Index Reference
Standard Practice Maintenance Manual1-5
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Introduction
1-1.5. Compliance
The owner/operator is responsible for ensuring the engine is maintained in an airworthy
condition, including compliance with FAA Airworthiness Directives. Engine service life
is calculated based on compliance with the aircraft and engine manufacturer’s required
instructions, inspections, and maintenance schedule. Failure to comply may void the
engine warranty.
Prior to authorizing engine maintenance, the owner must
ensure the facility or mechanic meets the Federal Aviation
Administration (or equivalent authority) regulatory
requirements. The engine owner must verify the repair facility
or mechanic uses the most current revision, including change
pages of the applicable ICA. Use of Instructions for Continued
Airworthiness which have been designated as obsolete,
superseded, or inactive is prohibited.
Continental ICAs are written for use by maintenance personnel who possess and apply the
knowledge, training, and experience commensurate with persons holding a valid license
or certification granted by the governing airworthiness authority to return the engine to an
airworthy condition. No other use is authorized.
WARNING
WARNING
Failure to comply with ICAs may result in personal injury,
death and subsequent engine failure. Each person performing
maintenance, alteration or preventive maintenance on an
engine or accessory must use methods, techniques and practices
set forth in the Instructions for Continued Airworthiness or
other methods, techniques, and practices found acceptable to
the Administrator.
This manual shall be used in conjunction with the latest revision of FAA Advisory
Circular 43.13-1, “Acceptable Methods, Techniques, and Practices” as well as related
publications and accessory manufacturer’s instructions. Pursuant to Title 14 CFR Part 43,
§43.13(a), each person performing maintenance, alteration, or preventive maintenance on
the engine or accessories must use methods, techniques, and practices prescribed in the
ICAs or other methods, techniques, and practices found acceptable by the Administrator.
1-6Standard Practice Maintenance Manual
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1-1.6. Order of Precedence
Continental engine operating instructions are generated prior to and independently of the
aircraft operating instructions. Continental operating instructions are developed using
factory controlled parameters that are not necessarily the same as those specifications
required to satisfy a specific aircraft/engine installation.
The aircraft operator must use the aircraft manufacturer’s
operating instructions found in the Airplane Flight Manual/
Pilot’s Operating Handbook (AFM/POH) and applicable
Airplane Flight Manual Supplements (AFMS) while operating
the engine in the aircraft unless the AFM/POH directs
otherwise.
Refer to the AFM/POH published by the aircraft manufacturer for operating instructions
and specifications relative to your aircraft.
Prior to commencing engine maintenance, consult the Continental web site
(www.continental.aero) to verify the current status of the ICAs relating to the intended
procedure.
Introduction
WARNING
1-2. Publications
This most current approved version of this manual is delivered to the customer at time of
purchase. This manual and all subsequent revisions or changes are published in Adobe
portable document format (PDF) and available to view or download from Aircraft
Technical Publishers (ATP) web site (www.atp.com).
1-2.1. Publication Access
Printed technical publications may be ordered through Continental technical publications
distributor, Aircraft Technical Publishers (ATP). Contact an ATP customer service
representative to discuss service subscription options and pricing or visit their web site
(www.atp.com).
1-2.2. Publication Changes
Use only the latest revision of all publications. Using superseded
information may jeopardize engine airworthiness. Service
documents, published by the manufacturer, or Airworthiness
Directives, published by the FAA, may alter or provide
supplemental information to the Maintenance and Overhaul
Manual. Verify and use only the current versions of all
instructions.
WARNING
The instructions in this manual represent the best and most complete information available
at the time of publication. Product or process improvements may trigger changes to
existing product design specifications or procedures contained in publications. As new
technical information becomes available, Continental will make the information available
to the customer.
Standard Practice Maintenance Manual1-7
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Introduction
Continental releases publication changes in the form of either change pages or complete
publication revisions, depending upon the extent of change.
Continental issues service documents in the form of Service Bulletins on a wide variety of
topics. Some service documents may affect or supplement information in this manual and
should be reviewed prior to performing maintenance. All active service documents
applicable to standard maintenance practices have been incorporated in these instructions
as of the date of publication.
1-2.3. Update/Change Distribution
Document updates are available on our web site upon notification of FAA document
acceptance/approval. Printed publication subscribers receive printed changes and
revisions as they are released.
Figure 1-2. Change Page Identification
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Introduction
Document revisions are released if the update changes more than 50% of the contents of a
publication. Revisions replace the previous version of a publication from cover to cover.
Minor corrections are released as change pages to the original publication, identified with
a change number and effective change date in the page footer. Information on the page that
changed from the previous edition is identified by a vertical, six-point black line
(Figure 1-2), referred to as a “change bar” in the outside margin of the page.
A change page replaces only the previous edition of the affected page. In the event a
change page forces repagination, a new page will be inserted with a decimal extension
added to the page number. For example, if additional pages are required between pages 16 and 1-7, the inserted page numbers will be 1-6.1, 1-6.2, and so on until sufficient pages
are added to incorporate the new material.
Page A of the manual contains the original publication date and an itemized list of changes
issued for the technical manual (Figure 1-3). If change pages are issued for the manual, the
change will be identified, with an effective date under the heading “Effective Changes for
This Manual” on Page A. The list of effective pages, itemizes the pages in each section, by
change number. Original pages are designated by a 0 in the List of Effective Pages
“Change” column.
Figure 1-3. List of Effective Pages
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Introduction
1-2.4. Service Documents
Continental may issue Service Documents in one of six categories ranging from mandatory
(Category 1) to informational (Category 6). Definitions of the categories are listed below:
NOTE: Upon FAA approval, Continental publishes service documents for
immediate availability on our web site. The service document cover page
indicates the engine models affected by the service document. Service
documents may alter or replace the manufacturer’s Instructions for
Continued Airworthiness. Insert a copy of applicable Service Documents
in affected manuals until the service document instructions are
incorporated in the manual, or the service document is canceled or
superseded.
1Procedure
Category 1: Mandatory Service Bulletin (MSB)
Used to identify and correct a known or suspected safety hazard which has been incorporated in whole or in
part into an Airworthiness Directive (AD) issued by the FAA or have been issued at the direction of the FAA
by the manufacturer requiring compliance with an already-issued AD (or an equivalent issued by another
country’s airworthiness authority). May contain updates to Instructions for Continued Airworthiness to
address a safety issue.
Category 2: Critical Service Bulletin (CSB)
This category identifies a condition that threatens continued safe operation of an aircraft, persons or property
on the ground unless some specific action (inspection, repair, replacement, etc.) is taken by the owner or
operator. Documents in this category are candidates for incorporation into an FAA Airworthiness Directive.
May contain updates to Instructions for Continued Airworthiness to address a safety issue.
Category 3: Service Bulletin (SB)
Information which the product manufacturer believes may improve the inherent safety of an aircraft or
aircraft component; this category includes the most recent updates to Instructions for Continued
Airworthiness.
Category 4: Service Information Directive (SID)
The manufacturer directs the owner/operator/mechanic in the use of a product to enhance safety,
maintenance or economy. May contain updates to Instructions for Continued Airworthiness in the form of
maintenance procedures or specifications.
Category 5: Service Information Letter (SIL)
This category includes all information (not included in categories 1 through 4) that may be useful to the
owner/operator/technician. May contain updates to Instructions for Continued Airworthiness for optional
component installations, which are not covered in the Applicable Operator, Maintenance, or Overhaul
Manuals.
Category 6: Special Service Instruction (SSI)
This category is used to address an issue limited to specific model and/or serial number engines. We will
distribute SSI notification directly to the affected engine’s owners.
service document set but will be made available through our Customer Service Department to owners of the
affected engines only. An SSI may update the applicable engine’s Instructions for Continued Airworthiness.
SSIs will not be included in the general
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Introduction
1-2.4.1. Service Documents Incorporated in this Manual
Applicable technical maintenance and service information contained in the Service
Documents listed below, relevant to the engine models covered by this engine manual,
have been incorporated in this M-0, Standard Practice Maintenance Manual. This manual
supersedes and retires these Service Documents (and all revisions, where applicable)
excluding Mandatory Service Bulletins (MSBs) and Critical Service Bulletins (CSBs)
identified with an asterisk (*) in Table 1-1 below.
The full content of active Continental Service Documents is available at
www.continental.aero. Refer to Section 1-3, “Contact Information” for Continental web
site details.
Table 1-1. Service Documents Incorporated in Manual
Affected
Service DocumentSubject
M67-12, Overboost of Turbocharged EnginesUnscheduled Maintenance6
M71-21, Procedure for Freeing Turbocharger Turbine Shafts which
are Dragging or Frozen by Rust Deposits
Troubleshooting8
Chapter
M72-17R1, Maximum Weight Difference Between Connecting Rods
and Pistons in the Same Engine
M75-7R1, Oil Filter ChangeScheduled Maintenance6
M76-4, Propeller Shaft or Crankshaft Oil Seal ReplacementUnscheduled Maintenance10
*CSB08-3C, Throttle & Mixture Control LeversFuel Injection System
Assembly
SB08-13, Induction System Hose and Clamp InstallationInduction System Inspection &
Assembly
1-12
CHANGE 3
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6
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Introduction
Table 1-1. Service Documents Incorporated in Manual
Affected
Service DocumentSubject
SB11-3, Alternator and Drive Coupling InstallationAlternator Replacement6, 10
SIL13-2A, Alternator Instructions for Continued AirworthinessAlternator Replacement6, 10
SB14-8, Exhaust Flange to Cylinder InstallationExhaust System Installation10
SB16-3, Turbocharger Check Valve Inspection and CleaningExhaust System Inspection6
SB17-01A, Flanged Nut Inspection and Corrosion PreventionCylinder Inspection6
SIL17-02, Turbocharger Check Valve Filter Installation, Inspection,
and Cleaning
SIL17-03, Oil Filter Anti-stick GasketOil and Filter Change6
SIL18-01, Rocker Assembly Valve, Exhaust (P/N 658745)Rocker Arm Identification10
SIL19-04, Oil Brand SelectionOil Servicing6
SB19-05, Valve Guide Application, Installation, and Reaming
Procedures
SIL19-10, Disposable Oil Filter RemovalOil and Filter Change6
SIL21-04A, Improved Rocker Cover Gasket, Part No. 668893Cylinder Maintenance10,
* Documents remain active in the service bulletin set.
Maintenance Criteria6, 8,
Cylinder Maintenance10
Chapter
Appendix C
Appendix B
1-2.4.2. Service Documents Released After Publication
Continental strives to provide clear, concise, and accurate information and instructions
based on best known engineering data at the time of publication. Ongoing process
improvements may change a specification or procedure after a manual is released. Service
documents, defined in Section 1-2.4, expedite customer notification until the new
information is incorporated in the manual text. As service documents are received, note
the service document number, release date, title, and applicable section affected by the
service document in the blank cells below and insert a copy of the service document
behind the last page of this section. Make pen & ink corrections, where appropriate, to the
original text in the manual with a citation to the service document; i.e. see SB9X-1. For
paragraphs or entire sections, draw an “X” through the affected information in the manual
and reference the service document containing the correction
Service Documents Release After This Manual
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
/ /
/ /
/ /
/ /
Affected Sections:
Affected Sections:
Affected Sections:
Affected Sections:
6 January 2023
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CHANGE 3
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Introduction
Service Documents Release After This Manual
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
/ /
/ /
/ /
/ /
/ /
/ /
/ /
/ /
Affected Sections:
Affected Sections:
Affected Sections:
Affected Sections:
Affected Sections:
Affected Sections:
Affected Sections:
Affected Sections:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
Document Number:Release Date:
Title:
/ /
/ /
/ /
/ /
/ /
/ /
/ /
Affected Sections:
Affected Sections:
Affected Sections:
Affected Sections:
Affected Sections:
Affected Sections:
Affected Sections:
1-14Standard Practice Maintenance Manual
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1-2.5. Related Publications
The table below lists the publications, source, and accessibility relevant to Standard
Practice installation, maintenance, and overhaul.
Use only the latest revision of all publications. Using superseded
information can jeopardize engine airworthiness.
CAUTION: Instructions in M-0, Standard Practice Maintenance Manual, do
not apply and shall not be used to maintain Continental Prime or Titan
engine products.
Introduction
WARNING
1
Supplied
With Engine
Electronic
Download
Available
Printed
Manual
Available
Document Part
Number (P/N)
Table 1-2. Related Publications
Publication Title
Instructions for Continued Airworthiness
M-0
s manual)
(thi
Standard Practice Maintenance Manual
2
YesYesYes
X30531Alternator Service Support ManualYesYesYes
X42001Magneto Service Support Manual (S-1200 Series)YesYesYes
X42002Magneto Service Support Manual (S-20/200 Series)YesYesYes
1. Our web site (www.continental.aero) provides daily 24-hour access to current service documents and the technical publications Index.
Continental is partnered with Aircraft Technical Publishers (ATP, (www.atp.com) to distribute our technical publications on their subscription
web site. If you have not subscribed to ATP and are using printed manuals, verify & confirm you have the latest applicable revision with
either a service representative (using the “Contact Information” in Section 1-3) or the Service Document Index.
2. Instructions in M-0, Standard Practice Maintenance Manual, do not apply and shall not be used to maintain Continental Prime or Titan
engine products.
1-2.5.1. Suggestions and Corrections
Continental solicits and encourages user comments regarding suggested changes to this
manual. Direct recommended changes or questions to the attention of “Publications” at the
address listed in Section 1-3, “Contact Information” or send comments via e-mail to
cm.techpubs@continental.aero.
Notify our Customer Service Department immediately if you discover incorrect
information which adversely affects safety.
Standard Practice Maintenance Manual1-15
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Introduction
1-3. Contact Information
Continental factory representatives are available to answer technical questions and
encourages suggestions regarding products, parts, or service. If customers have an inquiry
or require technical assistance, they should contact their local Continental distributor or
field representative. To contact a factory representative, refer to the contact information
below:
Continental Aerospace Technologies
P. O. Box 90
Mobile, AL 36601
Customer Service Department:
Toll free within the continental United States: 1-888-826-5465
International: 1-251-438-8299
Internet: www.continental.aero
1-4. Service Parts
Continental engineering staff develops a complete bill of materials for every engine model
specification manufactured. Due to our diverse customer base of aircraft OEM and STC
application builders, engine model specifications are developed to accommodate the
aircraft manufacturer’s specifications. While many parts fit multiple engine model
specifications, interchangeability of parts from one engine model, or model specification,
to another is not guaranteed.
1-4.1. Service Part Applicability and Availability
Major engine assemblies and components are permanently identified (steel stamped,
engraved, laser etched, or ink-stamped) with a unique part number during the
manufacturing process. The latest revision of the Illustrated Parts Catalogs is available on
our web site to locate Continental parts for current production engine model specifications
and heritage products (no longer in production).
Some parts of assemblies are not available for aftermarket sale for various reasons. Some
assemblies are not intended to be disassembled, such as cylinder heads and barrels. For
this reason, only the next higher assembly (NHA) is available for aftermarket sales.
1-4.2. Part Supersedure
Innovation and continuous improvements are core values at Continental. The original part
numbers used to manufacture your aircraft engine may or may not be available when
replacement parts are needed to restore the engine to an airworthy condition. Due to
design improvements to the form, fit, or function of the engine part or assembly, it may be
necessary to supersede the older part number (used to build the original engine model
specifications) and provide a new replacement part or assembly number.
The simplest way to determine the correct part number can be found by comparing the
markings on the existing part(s) to part numbers in the Illustrated Parts Catalog (IPC).
To determine if a part number used to assemble your engine has been superseded, consult
the Parts Supersedure History page on our web site.
1-16Standard Practice Maintenance Manual
15 Sep 2019
Page 39
2-1. Special Tools
NOTE: Special tools listed in Table 2-1 are for reference only, not for the
purpose of promoting or requiring the customer to purchase from a
particular provider. The providers listed are potential sources for the
items based on information available at the time of printing. Customers
are free to obtain equivalent items from alternate sources which meet or
exceed specifications of the listed tools. For FADEC special tools,
reference the primary ICA.
Special tool vendor contact information is listed in Table 2-2.
Tools
Chapter 2. Tools
Table 2-1. Special Tools List
Special ToolUse or ReferenceSuggested ProvidersPart Number
**Providers can be subject to change or discontinue manufacturing tools
*** The rights to manufacture Borroughs and Kent-Moore tools has been acquired by Kell-Strom Tool Company.
1
1. Items with Continental part numbers may be purchased directly from Continental.
2-6Standard Practice Maintenance Manual
CHANGE 11 Feb 2021
Page 45
2-1.1. Vendor Contact Information
Table 2-2. Tools, Accessories, and Supply Vendors
Tools
SupplierAddressPhoneFAXWeb Address
American Lubricants /
Moly Motor Oil
Aircraft Tool Supply
Alcor
Arbor Fabricating
A. W. Chesterton
Company
ASTM
1227 Deeds
Dayton, OH 45401
P.O. Box 370
1000 Old U.S. 23
Oscoda, MI 48750
300 Breesport
San Antonio, TX 78216
14030 Tuttle Hill
Milan, MI 48160
500 Unicorn Park Drive
Woburn, MA 01801-3345
100 Barr Harbor Drive
West Conshohocken, PA 19428
937-222-2851 618-534-5231 molymotoroil.com
800-248-0638
517-739-1447
800-343-7233
210-349-6491
517-739-1448 aircraft-tool.com
210-308-8536 alcorinc.com
734-626-5864 N/Aarborfab.com
800-835-4135
781-438-7000
877-909-2786
610-832-9585
781-438-8971 chesterton.com
N/Aastm.org
1
Borroughs See Kell-Strom Tools
Champion Aerospace,
Inc.
CRC Industries/Chemical
Products
Crown Equipment Corp.
Davis Instruments
Daubert Chemical
Dow Corning Corporation
1230 Old Norris Road
Liberty, SC 29657
885 Louis Drive
Warminister, PA 18974
44 S. Washington Street
New Bremen, OH 45869
625 E. Bunker Ct.
Vernon Hills, IL 60061
4700 South Central Ave Chicago,
IL 60638
P.O. Box 997
South Saginaw Road
Midand, MI 48686
Federal MogulSouthfield, MI248-354-7700federal-mogul.com
Graham Aircraft Engines
(Motorstor)
Hartzell Engine
Technologies (formerly
Kelly Aerospace)
Hartzell Propeller Inc.
Henkel Aerospace
Ideal Aviation
PO Box 3214
Peachtree City, GA 30269
Plane Power
2900 Selma Hwy
Montgomery, AL 36108
One Propeller Place
Piqua, OH 45356
32100 Stephenson Hwy
Madison Heights, MI 48071
564 Juanita Avenue
Mesa, AZ 85204
770-252-4995 770-252-5270 www.highaero.com
877-359-5355 334-386-5410 hartzellenginetech.com
937-778-4200 937-778-4271 hartzellprop.com
248-583-9300 248-583-2976 henkel.com
480-963-8890 480-963-8887 idealaviation.com
Standard Practice Maintenance Manual2-7
1 Feb 2021CHANGE 1
Page 46
Tools
Table 2-2. Tools, Accessories, and Supply Vendors
SupplierAddressPhoneFAXWeb Address
Kent-MooreSee Kell-Strom Tool Company
metrologyworld.com/
storefronts/
krautkramer.html
Krautkramer-Branson
Loctite
LPS Laboratories
Lubriplate
MAHR Federal
McMaster-Carr Supply
Company
Merit Abrasives
Miller-Stephenson
Chemical Company
Q.A. Technologies
Plane Power®, see
Hartzell Engine
Technologies
Parker Research
Corporation
Shell Oil Company
50 Industrial Park Road
Lewistown, PA 17044
1001 Trout Brook Crossing
Rocky Hill, CT 06067-3910
4647 Hugh Howell Road
Tucker, GA 30084
129 Lockwood St.
Newark, NJ 07105
1144 Eddy Street
Providence, RI 02905
P.O. Box 4355
Chicago, IL 60680-4355
201 W. Mansville Dr.
Compton, CA 90224
6348 Oakton St.
Morton Grove, IL 60053
P.O. Box 61085
Savannah, GA 31420
Plane Power
2900 Selma Hwy
Montgomery, AL 36108
P.O. Box 1406
Dunedin, FL 34697
P.O. Box 2463
Houston, TX 77252
717-242-0327
334-438-3411
860-571-5100
800-243-4874
800-241-9334
770-243-8800
973-589-9150
800-733-4755
401-784-3271
800-343-2050
860-571-5465 loctite.com
770-243-8899 lpslabs.com
973-589-4432 lubriplate.com
401-784-3246 mahr.com
630-833-0300 630-834-9427 mcmaster.com
800-421-1936
310-639-4242
847-966-2022
800-992-2424
800-472-3094 meritabr.com
847-966-8468 miller-stephenson.com
912-330-0500 912-330-0104 qatek.com
877-359-5355 334-386-5410 hartzellenginetech.com
800-525-3935
727-796-4066
713-241-4819
800-332-6457
727-797-3941 parkreascorp.com
713-241-6511 shell-lubricants.com
Snap On (Tools)877-740-1900 877-740-1880 snapon.com
Stanley Engineered
Fastening
L.S. Starrett Company
Tanair (Tanis Aircraft
Services)
U.S. Industrial Tool &
Supply
Worldwide Filter
(Mouse Milk)
4 Shelter Rock Lane
Danbury, CT 06810
121 Crescent Street
Athol, MA 01331
P14871 Pioneer Trail Suite. 200
Eden Prairie, MN 55347
14083 South Normandie Ave.
Gardena, CA 90249
1689 Abram Court
San Leandro, CA 94577
877-364-2781 800-225-5614
800-541-8887
978-249-3551
978-249-8495 starrett.com
stanleyengineeredfaste
ning.com
800-443-2136
In Minnesota:
952-224-4426 tanisaircraft.com
952-224-4425
310-464-8400
800-464-8400
310-464-8880 ustool.com
510-483-5122 734-455-3256 mousemilk.com
1
1. Unless otherwise indicated, type http://www. followed by the Web Address shown in tis column.
2-8Standard Practice Maintenance Manual
15 Sep 2019
Page 47
Tools
Pressure
Regulator
Regulator
Pressure
Gauge
Cylinder
Pressure
Gauge
Master
Orifice
Valve
SlowFill Valve
Cylinder
Adapter
AIR
IN
Pressure
Regulator
Regulator
Pressure
Gauge
Cylinder
Pressure
Gauge
Master
Orifice
Valve
Slow Fill
Valve
Cylinder
Adapter
AIR
IN
Figure 2-1. Model E2M Differential Pressure Tester (built in Master Orifice Tool)
Figure 2-2. Borescope (Autoscope®)
NOTE: Borescopes are available from multiple manufacturers, with
varying levels of features and resolution. The Autoscope® is only one of
the available products.
Standard Practice Maintenance Manual2-9
15 Sep 2019
Standard Practice Maintenance Manual2-19
15 Sep 2019
Page 58
Tools
Figure 2-18. Valve Guide Seal Installation Tool
2-20Standard Practice Maintenance Manual
15 Sep 2019
Page 59
Figure 2-19. O-Ring Installation Tool
Medium Knurl
Mill Flat
Stamp P/N
On Flat
1/16 Radius
0.783 Dia.
1.200 Dia.
1.00
0.68
5/16
1-1/4 Dia.
Before Knurl
1/8x45°
1.00
2.00
3.00
Material 1020
Case Harden
Tools
Figure 2-20. Oil Seal Tool
Standard Practice Maintenance Manual2-21
15 Sep 2019
Page 60
Tools
Figure 2-21. Helical Coil Extraction Tool
Figure 2-22. Helical Coil Insertion Tool
2-22Standard Practice Maintenance Manual
15 Sep 2019
Page 61
Tools
Figure 2-23. Helical Coil Expanding Tool
Figure 2-24. Rosan® Stud Removal Tool
Standard Practice Maintenance Manual2-23
15 Sep 2019
Page 62
Tools
2-2. Mechanic’s Tools
The tools listed below are required to perform overhaul procedures on the engines.
Table 2-3. Common Tools
Open-End Wrenches – 1/4-inch through 1-Inch1/4-inch Slide hammer
Socket Wrenches:
1/4-inch drive
Socket Sizes: 5/32-inch through 1/2-inch
3/8-inch or 1/2-inch drive
Socket Sizes: 7/16-inch through 1-1/2-inch
Deep Well Sockets:
1/2-inch drive
Socket Sizes: 7/16-inch drive through 1-inch
Calibrated Torque Wrenches:
• 0 to 1000 in-lbs
• 0 to 500 in-lbs
• 0 to 100 ft-lbs
MicrometersBall Peen Hammer
Allen Wrenches - assortmentPullers
Slotted Screwdrivers – assortmentBlind Bearing Remover
Phillips Screwdrivers – Nos. 1 and 2Vernier Calipers
Safety Wire PliersLeather or soft plastic Mallet
Common PliersSmall hole gauges, thickness gauges
Diagonal Cutter PliersFeeler Gauges (leaf-type)
Needle-Nose PliersC-Clamps
Duck Bill PliersBrass Wire Brush
Snap Ring Pliers (with 90-degree bend)Stiff-bristled, Non-wire Scrub Brush
Inspection light/flashlightDry Blaster Cleaning Tool
Two-inch (2”) Merrit Wheel (flap wheel)Air Impact Tool
T-handle DriveToolmaker’s Square
Magnifying Glass (10X power)Profilometer
MirrorChamfer Tool
Utility KnifeMorse Adapter
ScissorsHeavy Duty Drill Press
Crimp ToolArbor Press (and 8-inch arbors)
Wire TiesVertical Mill
Ring ExpanderEngine Hoist
Bench Vise with Shielded JawsEngine Stand
Fiber Drift, Brass Drift, Pin or PunchTransport dolly
MagnetAircraft Tie-downs and Stop-blocks
Stud Extractor ToolV-blocks
Ezy OutCatch Basins (Fuel and Oil)
Wood or Plastic SpatulaPermanent Marker
Tank SprayerStrap Wrench
Ratchets:
• 1/4-inch drive
• 3/8-inch drive
• 1/2-inch drive
Heat Gun
(variable intensity/ equipped with a small tip)
• Drill, 0.266 (H) Pneumatic drill
• 00.339 Drill High speed borer
• Drill Index
2-24Standard Practice Maintenance Manual
15 Sep 2019
Page 63
Chapter 3 . Lubricants, Sealants, and Adhesives
3-1. Engine Oil Specifications
WARNING
While it is unlikely any Mobil AV1 brand oil remains available,
in use, or in inventory, use of Mobil AV1 is prohibited from use
in Continental aircraft engines.
Lubricating oils qualified for use in Continental aviation gasoline (AvGas) engines are
required to meet Society of Automotive Engineers (SAE) specifications. SAE J1899 is the
specification for aircraft piston engine ashless-dispersant oil. SAE J1966 is the
specification for aircraft piston engine non-dispersant mineral oil.
Lubricating oil meeting these specifications is acceptable; proof of conformity is the
responsibility of the lubricant manufacturer.
Lubricating oil classified by North Atlantic Treaty Organization (NATO) or
Standardization Agreement (STANAG) as interchangeable with oils qualified under SAE
J1899 or SAE J1966 and assigned NATO codes O-123 or O-128 shall be considered
qualified.
The marketers listed in Table 3-1 have supplied data to Continental indicating the products
conform to one or more of the requirements above.
CAUTION: Use the appropriate oil grade applicable to their specific
engine or product line and maintain a consistent oil brand to sustain
standard engine operations until after overhaul. Use only oil
specification approved by the engine Type Certificate Data Sheet.
Lubricant manufacturers produce multiple oil products which comply with specification
MHS-24; each containing proprietary formulations for straight weight and multiviscosity
oil grades. Operators choose the appropriate oil to service their engine based on
Instructions for Continued Airworthiness (ICAs), operating environment, viscosity, brand,
and personal preference. Switching oil brands before engine overhaul may result in higher
wear rates for lifters and cylinder components, even under normal operating conditions.
Analysis indicates consistent servicing with one brand of oil will result in fewer
maintenance events and more consistent oil analysis results. Continue using the same oil
brand throughout the service life of the engine. Do not change from an established “oil
type” (mineral oil, semi-synthetic oil), even within the selected brand, before engine
overhaul.
Standard Practice Maintenance Manual3-1
1 Feb 2021CHANGE 1
Pennzoil
Phillips 66 Type A 100 AD, 120 AD
Phillips 66 Victory Aviation Oil 100AW
Phillips 66 X/C Aviation Oil SAE 20W-50, SAE 25W-60
Aeroshell Oil, (Mineral) 65, 80, 100, 2F Anti-Corrosion Formula
Aeroshell Multi-grade Oil AD, 15W - 50
Aeroshell Oil W65, W80, W100
Aeroshell Oil W80 Plus, W100 Plus Anti Corrosion Formula
Total Aero DM 15W - 50
Total Aero XPD 80 (SAE 40), XPD 100 (SAE 50), XPD 120 (SAE 60)
®
Aircraft Engine Oil
Table 3-2. Qualified SAE J1966 Non-Dispersant Mineral Oil
Supplier
Phillips 66 Aviation
ConocoPhillips
Shell Aviation
Total Lubricants
Brand
Phillips 66 Type M Aviation Oil 20W-50 (Multi-viscosity)
Phillips 66 Type M Aviation Oil 100W (Grade 50)
Aeroshell Oil 65 (Grade 30)
Aeroshell Oil 80 (Grade 40)
Aeroshell Oil 100 (Grade 50)
Aeroshell Oil 120 (Grade 60)
Total Aero DM 15W - 50
Total Aero 80 (SAE 40)
Total Aero 100 (SAE 50)
Table 3-3. Break-in Oil
TypeEquivalentApplication
SAE J1966 Aviation
MIL-C-6529 Type II Corrosion
preventive mineral oil
Non-dispersant mineral oil for piston
aircraft engines
Fly-away oil
First 25 hours of engine operation or
until oil consumption stabilizes
NOTE: Mineral oil conforming to MIL-C-6529 Type II contains a
corrosion preventive additive and must not be used for more than 25
hours or six months, whichever occurs first. If oil consumption has not
stabilized in this time, drain the mineral oil, replace the oil filter and
replace the discarded mineral oil with SAE J1966 aviation oil.
Temporary or Indefinite Storage.
Sprayed in cylinders (Section 9)
3-2Standard Practice Maintenance Manual
15 Sep 2019
Page 65
3-2. Oil Change Intervals
Refer to the engine maintenance manual and/or the aircraft manufacturer’s or
Supplemental Type Certificate (STC) holder’s AFM/POH for oil specifications, specified
oil change intervals and inspection procedures.
Oil change intervals published in this manual are minimum requirements. Continental
believes more frequent oil and filter changes enhance engine service life. Drain and
replenish engine oil every 25 hours of operation or 4 months for engines that incorporate a
reusable oil screen. On engines with the full flow oil filters, large or small replaceable oil
filter cartridge, change the oil and filter every 50 hours and/or 4 months. Inspect oil screens
and oil filter elements for contaminates at each oil change. Oil analysis may be used in
addition to the oil screen or filter element inspection, but not as a replacement for it.
3-3. Additives
We often receive inquiries regarding the potential use of alternative fuel and oil additives
and/or concentrates (formulated primarily for automotive and industrial engine
applications) for use in our aircraft engines. Most of these additives and concentrates are
not compatible with air-cooled, light aircraft engines in their operating environments.
With the exception of the use of isopropyl alcohol or diethylene glycol monomethyl ether
(DiEGME) compound (described in the following paragraph), we do not recommend the
use of additives or concentrates in any of our aircraft engines. The use of unapproved
additives may void the engine warranty. Use only recommended fuels and lubricants.
Lubricants, Sealants, and Adhesives
WARNING
Mixing of the DiEGME compound with fuel concentration in
excess of the recommended (0.15 percent volume maximum)
could have a harmful effect on engine components. Use only the
manufacturer’s recommended blending equipment and
procedures to achieve proper proportioning.
Under certain ambient conditions of temperature and humidity, sufficient quantities of
water may exist in the fuel to create restrictive ice formation in the fuel supply. To
alleviate this occurrence, it is permitted to add no more than three percent Isopropyl
Alcohol to the fuel supply. Also, DiEGME conforming to military specification MILDTL-85470B, if approved by the aircraft manufacturer, may be added for this purpose.
DiEGME compound must be carefully mixed with the fuel in concentrations not to exceed
0.15% (by volume).
Standard Practice Maintenance Manual3-3
15 Sep 2019
Page 66
Lubricants, Sealants, and Adhesives
3-4. Sealant, Lubricant, and Adhesive Applications
Table 3-5. Sealants
Continental
Part
Number
642188
646940
CRC Copper Coat 401504
Gasket Sealant
F/I Sealant Loctite 569
Hydraulic Sealant
Gasket Maker
646942
Loctite 515
Flange Sealant
649246Loctite 290 Sealant
TypeApplicationRemarks
Non-beaded gaskets; Apply both sides
of starter gasket, oil cooler adapter
gasket, vacuum pump adapter gasket,
and fuel pump pad cover gasket.
Beaded gasket; Apply to non-beaded
0200D, X
side of starter gasket, oil cooler adapter
gasket, vacuum pump adapter gasket,
and fuel pump pad cover gasket.
All press type plugs (Hubbard etc.)
Intake manifold gasket
ACC case to crankcase
Valve Face to Valve Seat inspection
(during valve lapping)
All Models (w/through hardened
cylinder barrels)
N/A
N/A
3-10Standard Practice Maintenance Manual
CHANGE 226 Aug 2021
Page 73
3-4.1. General Sealant Application Instructions
CAUTION: Never apply anti-seize lubricant to the first two threads
to prevent contaminating fuel supply. Only apply to fitting tapered
ends up to the first two threads.
CAUTION: Never use Teflon® tape on fluid fittings or fuel injector
nozzles. Reference Table 3-5, “Sealants”.
Lubricants, Sealants, and Adhesives
Figure 3-1. Anti-Seize Lubricant Application
CAUTION: Apply P/N 646940, (Loctite 569) fuel injection (F/I)
sealant to the tapered threads of the fitting only (ref. Table 3-5).
Never use Teflon tape on fluid fittings or fuel injector nozzles.
Figure 3-2. Fuel Injection Sealant Application
Standard Practice Maintenance Manual3-11
26 Aug 2021CHANGE 2
Page 74
Lubricants, Sealants, and Adhesives
3-4.1.1. Four Cylinder Engine Crankcase Threading
WARNING
Do not apply any form of sealant to the crankcase cylinder
deck, chamfer, cylinder mounting flange, cylinder base O-ring,
or cylinder fastener threads. The use of RTV, silicone, Gasket
Maker or any other sealant on the areas listed above during
engine assembly will cause a loss of cylinder deck stud or
through-bolt torque. Subsequent loss of cylinder attachment
load, loss of main bearing crush and/or fretting of the
crankcase parting surfaces will occur. The result will be
cylinder separation, main bearing movement, oil starvation and
catastrophic engine failure. USE ONLY CLEAN 50 WEIGHT
AVIATION ENGINE OIL ON SURFACES LISTED.
1. Use full strength, non-thinned P/N 654663 (gasket sealant). Shake or mix well
before using.
CAUTION: Apply gasket sealant and threading (a continuous, single
piece) only as illustrated. Do not apply gasket sealant to crankshaft
nose seal area.
2. Apply P/N 654663 (gasket sealant) to 2-4 case half according to the manufacturer’s
instructions only in areas where threading is indicated. When applying, use short
light brush strokes until an even thin coat is obtained. The gasket sealant should be
viscous enough that most of the brush marks disappear; if not, discard the old gasket
sealant and reapply with new gasket sealant.
NOTE: Allow the gasket sealant to air dry to a tacky condition before
applying silk threading.
3. Apply a thin translucent coat of P/N 646942 (gasket maker), not to exceed 0.010
inch thick, to the 1-3 case half. Apply gasket maker in all areas that will mate against
areas where gasket sealant was applied on the matching 2-4 case half (except the
through bolt bosses).
4. Apply and position P/N 641543 (a continuous, single piece of grade “D” silk thread)
on the 2-4 case half as specified (see Figure 3-3 or Figure 3-4). Ensure the free ends
of the thread will be covered by gasket material (except at the nose oil seal).
5. Assemble crankcase halves; install and torque all crankcase hardware in proper
sequence in accordance with the applicable overhaul manual as soon as possible.
NOTE: Take care to prevent displacement or damage to the crankshaft oil
seal and silk thread. Ensure thrust washer halves and bearing halves
remain in place.
6. After crankcase torque, follow the instructions in Section 10-10 to install the nose
oil seal.
3-12Standard Practice Maintenance Manual
CHANGE 226 Aug 2021
Standard Practice Maintenance Manual3-13
15 Sep 2019
Page 76
Lubricants, Sealants, and Adhesives
3-4.1.2. Six Cylinder Engine Crankcase Threading
WARNING
Do not apply any form of sealant to the crankcase cylinder
deck, chamfer, cylinder mounting flange, cylinder base O-ring,
or cylinder fastener threads. The use of RTV, silicone, Gasket
Maker or any other sealant on the areas listed above during
engine assembly will cause a loss of cylinder deck stud or
through-bolt torque. Subsequent loss of cylinder attachment
load, loss of main bearing crush and/or fretting of the
crankcase parting surfaces will occur. The result will be
cylinder separation, main bearing movement, oil starvation and
catastrophic engine failure. USE ONLY CLEAN 50 WEIGHT
AVIATION ENGINE OIL ON SURFACES LISTED.
1. Use full strength, non-thinned P/N 654663 (gasket sealant). Shake or mix well
before using.
CAUTION: Apply gasket sealant and threading (a continuous, single
piece) only as illustrated.
2. Apply P/N 654663 (gasket sealant) to 2-4-6 case half according to the
manufacturer’s instructions only in areas where threading is indicated. When
applying, use short light brush strokes until an even thin coat is obtained. The gasket
sealant should be viscous enough that most of the brush marks disappear; if not,
discard the old gasket sealant and reapply with new gasket sealant.
NOTE: Allow the gasket sealant to air dry to a tacky condition before
applying silk threading.
3. Apply a thin translucent coat of P/N 646942 (gasket maker), not to exceed 0.010
inch thick, to the 1-3-5 case half. Apply gasket maker in all areas that will mate
against areas where gasket sealant was applied on the matching 2-4-6 case half
(except the through bolt bosses).
4. Apply and position P/N 641543 (a continuous, single piece of grade “D” silk thread)
on the 2-4-6 case half as specified (see Figure 3-6 through Figure 3-9). Ensure the
free ends of the thread will be covered by gasket material (except at the nose oil
seal).
5. Assemble crankcase halves; install and torque all crankcase hardware in proper
sequence in accordance with the applicable overhaul manual as soon as possible.
NOTE: Take care to prevent displacement or damage to the crankshaft oil
seal and silk thread. Ensure thrust washer halves and bearing halves
remain in place.
6. After crankcase torque, follow the instructions in Section 10-10 to install the nose
oil seal.
3-14Standard Practice Maintenance Manual
CHANGE 226 Aug 2021
Standard Practice Maintenance Manual3-17
15 Sep 2019
Page 80
Lubricants, Sealants, and Adhesives
3-4.2. Scavenge Pump Body Sealant and Threading
1. Use full strength, non-thinned P/N 654663 (gasket sealant). Shake or mix well
before using.
NOTE: Apply gasket sealant and threading (a continuous, single piece)
only as illustrated.
2. Apply P/N 654663 (gasket sealant) to scavenge pump body according to the
manufacturer’s instructions only in areas where threading is indicated. When
applying, use short light brush strokes until an even thin coat is obtained. The gasket
sealant should be viscous enough that most of the brush marks disappear; if not,
discard the old gasket sealant and reapply with new gasket sealant.
NOTE: Allow the gasket sealant to air dry to a tacky condition before
applying silk threading.
3. Apply a thin translucent coat of P/N 646942 (gasket maker), not to exceed 0.010
inch thick, to areas of the starter adapter cover where gasket sealant was applied on
the mating surfaces.
4. Apply and position P/N 641543 (a continuous, single piece of grade “D” silk thread)
as shown by the dashed lines in Figure 3-10.
5. Assemble and torque as soon as possible in accordance with the applicable overhaul
manual.
Figure 3-10. Scavenge Pump Body Threading Diagram
Applicable to scavenge pump bodies, Part Nos. 640741, 652019, 655713,
used on starter adapters 642087 & corresponding 0.015 oversize adapters
3-18Standard Practice Maintenance Manual
CHANGE 226 Aug 2021
Page 81
3-4.3. Oil Pump Assembly Sealant and Threading
1. Use full strength, non-thinned P/N 654663 (gasket sealant). Shake or mix well
before using.
NOTE: Apply gasket sealant and threading (a continuous, single piece)
only as illustrated.
2. Apply P/N 654663 (gasket sealant) to the oil pump housing according to the
manufacturer’s instructions only in areas where threading is indicated. When
applying, use short light brush strokes until an even thin coat is obtained. The gasket
sealant should be viscous enough that most of the brush marks disappear; if not,
discard the old gasket sealant and reapply with new gasket sealant.
NOTE: Allow gasket sealant to air dry to a tacky condition before
applying silk threading.
3. Apply a thin translucent coat of P/N 646942 (gasket maker), not to exceed 0.010
inch thick, to areas of the oil pump cover where gasket sealant was applied on the
mating surfaces.
4. Apply and position P/N 641543 (a continuous, single piece of grade “D” silk thread)
as shown by the dashed lines in Figure 3-11 through Figure 3-15.
Lubricants, Sealants, and Adhesives
5. Assemble and torque as soon as possible according to the overhaul manual
instructions.
Figure 3-11. Oil Pump Assembly Threading Diagram
Applicable to oil pump assembly, Part Nos. 631713, 632481, 632563, & 641993
Standard Practice Maintenance Manual3-19
26 Aug 2021CHANGE 2
Page 82
Lubricants, Sealants, and Adhesives
Figure 3-12. Oil Pump Assembly Threading Diagram
Applicable to oil pump assembly, Part No. 632623
3-20Standard Practice Maintenance Manual
15 Sep 2019
Page 83
Lubricants, Sealants, and Adhesives
Figure 3-13. Oil Pump Assembly Threading Diagram
Applicable to oil pump assembly,
Part Nos. 646194, 653536, 655121, & 643527
Standard Practice Maintenance Manual3-21
15 Sep 2019
Page 84
Lubricants, Sealants, and Adhesives
Figure 3-14. Oil Pump Assembly Threading Diagram
Applicable to oil pump assembly, Part Nos. 643716, 643717, 643743, 643778, 643779, 653494,
Part Nos. 631149, 632970, 632977, 654437, 655349, & 655680
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Lubricants, Sealants, and Adhesives
3-4.4. Starter Adapter Assembly Sealant and Threading
1. Use full strength, non-thinned P/N 654663 (gasket sealant). Shake or mix well
before using.
NOTE: Apply gasket sealant and threading (a continuous, single piece)
only as illustrated.
2. Apply P/N 654663 (gasket sealant) to the starter adapter housing according to the
manufacturer’s instructions only in areas where threading is indicated. When
applying, use short light brush strokes until an thin, even coat is obtained. The
gasket sealant should be viscous enough that most of the brush marks disappear; if
not, discard the old gasket sealant and reapply with new gasket sealant.
NOTE: Allow gasket sealant to air dry to a tacky condition before
applying silk threading.
3. Apply and position P/N 641543 (a continuous, single piece of grade “D” silk thread)
as shown by the dashed lines in Figure 3-16.
4. Temporarily install the starter adapter to make an impression of the silk thread on
the accessory case.
5. Carefully remove the starter adapter so that the shaft gear does not pull out.
6. Inspect the thread impression for 100% contact between the starter adapter housing
and accessory case.
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Lubricants, Sealants, and Adhesives
7. Apply a thin translucent coat of P/N 646942 (gasket maker), not to exceed 0.010
inch thick, to areas of the accessory case that mate with the gasket sealant on the
starter adapter housing.
8. Install and torque the starter adapter according to the instructions in the applicable
overhaul manual as soon as possible.
9. Wipe excess sealant from the accessory case and starter adapter.
3-4.5. Starter Adapter Accessory Drive Cover Sealant and Threading
1. Use full strength, non-thinned P/N 654663 (gasket sealant). Shake or mix well
before using.
NOTE: Apply gasket sealant and threading (a continuous, single piece)
only as illustrated.
2. Apply P/N 654663 (gasket sealant) to 2-4-6 case half. Apply gasket sealant per the
manufacturer’s instructions only in areas where threading is indicated. When
applying, use short light brush strokes until an even thin coat is obtained. The gasket
sealant should be viscous enough that most of the brush marks disappear; if not,
remove old gasket sealant and reapply with new gasket sealant.
NOTE: Allow gasket sealant to air dry to a tacky condition before
applying silk threading.
3. Apply a thin translucent coat of P/N 646942 (gasket maker), not to exceed 0.010
inch thick, to the mating area of the accessory drive cover.
4. Apply and position P/N 641543 (a continuous, single piece of grade “D” silk thread)
as shown by the dashed lines in Figure 3-17.
5. Assemble and torque as soon as possible according to the overhaul manual
instructions.
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Page 87
Airworthiness Limitation Section
Chapter 4. Airworthiness Limitation Section
Each aircraft engine certified under Title 14 Code of Federal Regulations (CFR), § 33
Amendment 9 or later requires an Airworthiness Limitation Section in the principal
(primary) Instructions for Continued Airworthiness that is segregated and clearly
distinguishable from the rest of the manual. Consult Section 1-1.1 of this manual to
determine the part number of the primary ICA for your engine.
Continental engine Instructions for Continued Airworthiness with an initial publication
date later than 1984 contain an Airworthiness Limitation Section.
Continental piston aircraft engines certified under CAR 13 or prior to 14CFR § 33
Amendment 9 predate the Airworthiness Limitation Section requirement; consult the
latest revision of Continental SIL97-1 for information regarding engine Instructions for
Continued Airworthiness that do not contain an Airworthiness Limitation Section.
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Airworthiness Limitation Section
Intentionally Left Blank
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Chapter 5 .Engine Removal & Installation
5-1. Engine Removal
5-1.1. Tools and Consumable Supplies
WARNING
Ensure engine hoist and slings are designed to support the
weight of the total engine weight, including accessories.
Use of engine lifting eyes to lift the aircraft is strictly
prohibited.
CAUTION: Keep crankshaft axis horizontal during handling
operations.
1. Engine Hoist (rated for 800 lbs. minimum)
2. Two (2) engine slings (rated for 800 lbs. minimum)
3. Engine Transport Stand
4. Catch Basins (oil and fuel)
Engine Removal & Installation
5. Tank Sprayer with Stoddard Solvent (exterior engine cleaning)
5-1.2. Engine Removal Procedure
Reference the principal ICA (Section 1-1.1) for the engine being installed for removal
procedures.
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Engine Removal & Installation
5-2. Engine Installation
5-2.1. Common Tools and Consumable Supplies
WARNING
Ensure engine hoist and slings are designed to support the
weight of the total engine weight, including accessories.
Keep crankshaft axis horizontal during handling operations.
1. Engine Hoist (rated for 800 lbs. minimum)
2. Two (2) engine slings (rated for 800 lbs. minimum)
3. Oil conforming to SAE J1966 (break-in oil, non-dispersant mineral oil) MIL-C6529 Type II (Fly-away oil)
4. Ashless dispersant oil conforming to SAE J1899
5. MIL-PRF-46002, Grade 1 oil
6. Approved fuel for the engine model (see Section 7-2.2) or Type Certificate Data
Sheet (TCDS)
7. Spark plugs and copper gaskets
8. MS20995 Type A Safety Wire (0.020” and 0.032”)
9. Cable ties or nylon lacing cord
10. Bladder-type pressure pot (at least 1 gallon capacity)
11. Type 1 flammable fuel container (at least one gallon capacity)
12. Clean fuel hoses (fuel system setup)
13. AN union fittings (fuel system setup)
14. Rubber grommets (bulkhead and baffle pass-through)
15. MS-122AD Spray (procured from Miller-Stephenson)
20. Other supplies required by the aircraft manufacturer’s instructions.
5-2Standard Practice Maintenance Manual
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5-2.2. Engine Receipt and Handling
When the engine arrives, inspect the crating for damage. If the engine crating appears
damaged, notify the freight shipping company for resolution. If the crating appears intact,
proceed to Section 5-2.3.
5-2.3. Uncrating the Engine
1. Remove the lag screws attaching the wooden cover to the base.
2. Lift the wooden cover and remove it.
3. Open the plastic bag wrapped around the engine.
4. Inspect the engine according to the “Acceptance Inspection” criteria in Section 5-
2.5.
NOTE: The engine is preserved for long term storage at the factory; if it is
not immediately installed after acceptance, refer to the “Engine
Preservation and Storage” instructions in Chapter 9 for ongoing corrosion
protection instructions. Environmental conditions (humidity), seasonal
changes, and engine usage influence susceptibility to corrosion. In areas
of high humidity, corrosion can occur within two days of uncrating the
engine. The owner/operator is responsible for recognizing the risk of
corrosion and taking the appropriate precautions.
Engine Removal & Installation
5. If the engine will be stored for any length of time, refer to the “Engine Preservation
and Storage” instructions in Section 9.
5-2.4. Crating an Engine for Shipping
1. Lower the engine onto the container base.
2. Attach the engine using shock mounts and bolts.
3. Cover the engine with a plastic bag.
4. Install and attach the container cover to the base.
5-2.5. Acceptance Inspection
CAUTION: If hidden engine damage or corrosion is discovered,
contact Continental (see “Contact Information” in Section 1-3). Do
not install or place a damaged/corroded engine in storage.
1. Verify the engine serial number and model number on the engine nameplate are the
same as specified in the engine logbook and the packing slip.
2. Inspect the engine for signs of damage or corrosion.
a. If the engine exhibits no sign of damage or corrosion, proceed with installation.
b. If damage or corrosion is discovered, contact the supplier of the engine for
disposition.
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Engine Removal & Installation
5-2.6. Engine Transport
Refer to the “Engine Installation Drawings” in the primary ICA (Section 1-1.1) for lifting
eye locations.
CAUTION: Do not allow chains to become entangled on the engine
or its hardware. Ensure the area is clear when lifting the engine. Do
not allow the front, rear, sides or bottom of the engine to strike any
obstructions as the extreme weight may damage the engine or its
components.
1. Attach a hoist to the engine lifting eyes located at the top of the crankcase backbone.
2. Take up slack on the hoist prior to loosening the engine mount bolts; remove the
bolts from the shipping shock mounts.
3. Lift the engine and install it on a transportation stand or dolly.
5-2.7. Engine Installation Procedures
Refer to the engine installation instructions in the primary ICA for the engine being
installed when installing a like engine as a replacement. For engines being installed for the
first time in a new aircraft, refer to the engine installation manual.
NOTE: The installer is authorized to reposition engine component fittings,
if necessary, to mate with the aircraft interfaces, See Section 5-2.8.
5-4Standard Practice Maintenance Manual
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Engine Removal & Installation
5-2.8. Engine Adjustments and Component Replacement by OEMs and STC
Converters
Continental supplies engines to aircraft Original Equipment Manufacturer’s (OEM) and
STC Converters. These engines have been assembled, tested and inspected in accordance
with Continental FAA approved quality system standards and FAA issued Production
Certificate.
NOTE: Fitting orientation is determined at the time engine model
specification is designated for the aircraft application. If fitting
orientation adjustment is required for every engine installation, a model
specification change request may be more appropriate than repeated
repositioning of fittings.
Normally, only minor adjustments to the engine fuel system will be necessary at engine
installation (Reference Section 6-4.7, “Engine Operational Check”). Occasionally, minor
adjustment may be necessary to other engine systems, components, or to position fittings
for best routing and fit.
Continental hereby authorizes the specified adjustment and component replacements
listed in Table 5-1 to OEM and STC Converters who are approved by the FAA as an
aircraft production facility or FAA Approved modification facility.
Personnel performing the specified adjustment and component replacements must be a
licensed Airframe and Power Plant mechanic or be approved by the OEM or STC
Converter facilities quality assurance to be capable of performing the specific task. Work
shall be performed in accordance with applicable continued airworthiness instructions
including but not limited to the engine Installation Manual, Maintenance and Overhaul (or
Overhaul) Manual, Service Documents.
All work performed in accordance with these instructions must be documented by the
individual performing the task on the OEM or STC Converters FAA approved Quality
Inspection Document and traceable by engine and/or aircraft serial numbers.
Adjustments and/or replacements accomplished in accordance with these instructions
must be documented by the OEM on the aircraft production paper work. Additionally, the
OEM must provide Continental notification of adjustments and replacements
accomplished in accordance with these instructions. If a component part is replaced, the
OEM must provide the part number and serial number of the component removed and the
part number and serial number of the component installed. Return of any removed
component is to be coordinated with Continental via the OEM/Converter Customer Portal.
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Engine Removal & Installation
Table 5-1. Authorized Adjustments and Replacements
Authorized AdjustmentsAuthorized Replacements
Accessory Drive BeltsAlternator
Baffles and Baffle SealsBaffles
Engine Control Cable Support Brackets and
Attachment Points
Fluid Lines and Hoses, Attachment and SupportEngine Mount Legs
Fuel Pump, Throttle & Fuel Control Unit FittingsExhaust System Components
• Fuel Drain Fitting(s)Fuel Injector Nozzles
• Fuel Inlet FittingFuel Injection Lines and Hoses
• Fuel Return FittingsIgnition Harness
• Fuel Vapor Return FittingsManifold Valve
Fuel System AdjustmentMagnetos
Induction System Hose ClampsMagneto Sensor(s)
Magneto Orientation (positioning)Oil Coolers and adapter plates
Magneto Timing to EngineOil Filters
Oil Supply and Return FittingsOil Screens
Reference Air FittingsOil Pump
Worm Screw ClampsOil Sump and Gasket
Carburetor and/or Carburetor Airbox
Crankshaft/Propeller Shaft Nose Oil Seal
Spark Plugs
Starter Adapter Assembly
Starter Motor
Turbocharger and Turbocharger System
Components
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5-2.9. Engine Pre-oiling
See also “Lubrication System Priming” in Section 10-12.3.
Do not exceed the starter duty cycle to rotate the engine during
engine pre-oiling. Persistent engagement of the starter to rotate
the crankshaft will exceed the starter duty cycle and may result
in premature starter failure.
1. Install and torque the spark plugs and ignition lead wires according to the “Ignition
System Maintenance” instructions in Section 6-4.9.
2. Verify lubrication lines, fittings, hoses, screens, and filters are in place prior to preoiling.
3. Obtain a 1-gallon capacity bladder-type pressure pot with an output pressure of 50
psi (not to exceed 60 psi).
4. Connect the pre-oiler supply hose to the engine oil pressure output (fitting). It may
be necessary to disconnect the aircraft oil pressure sensor fitting according to the
aircraft manufacturer's instructions.
5. Remove the rocker covers.
Engine Removal & Installation
WARNING
6. Open the pre-oiler valve and monitor the rocker arms for oil flow. Depending upon
oil temperature, it may take several minutes to see an indication of oil flow.
7. Close the pre-oiler valve upon verification of oil flow at the rocker arms.
8. Install the rocker covers with new gaskets according to the “Cylinder Installation”
instructions in the primary ICA (Section 1-1.1). Torque the rocker cover fasteners to
Appendix B specifications.
9. Disconnect the pre-oiler supply hose and cap; connect the aircraft oil pressure sensor
to the engine oil pressure output according to the aircraft manufacturer's
instructions.
WARNING
Do not operate the engine unless the oil is properly serviced.
10. Check the oil level in the sump using the oil gauge rod (dip stick). Verify the engine
oil is at the proper level according to instructions in the primary ICA (Section 1-1.1)
for the engine model.
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Engine Removal & Installation
Intentionally Left Blank
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Chapter 6. Engine Inspection and Service
6-1. Engine Inspection Introduction
Inspections described in this chapter apply only to the Continental engines covered by this
manual. Perform the engine inspections according to the instructions provided. Perform
aircraft inspections according to the aircraft manufacturer's instructions. Refer to the
following sections:
• Section 6-2, “Inspection and Maintenance Schedule”
• Section 6-3, “Time Between Overhaul”
• Section 6-4, “Scheduled Inspections”
• Section 6-5, “Unscheduled Maintenance”
• Section 6-6, “Inspection Checklists”
Some inspections are at predetermined intervals (scheduled) while others are based on
circumstance (unscheduled). Engine servicing is performed at scheduled intervals but may
also be performed “on condition.” The first part of this chapter is devoted to scheduled
maintenance intervals and associated procedures; unscheduled maintenance instructions
follow the scheduled maintenance instructions.
NOTE: Discrepancies discovered by the person conducting the scheduled
or unscheduled inspections, even if the discrepancy is not an itemized
inspection item, should be corrected upon discovery. Fuel and oil system
contamination affects engine performance and service life. If oil or fuel
system contamination is discovered, do not limit the correction to the
symptom; isolate and correct the source of the contamination, including
any residual material left in the engine by the source of the contamination.
Engine Inspection and Service
6-2. Inspection and Maintenance Schedule
Unless another FAA-approved Inspection Program is established, the Engine Inspection
and Maintenance Schedule shows the inspections for the subject engines covered by this
manual in their original type design. The inspections described in this chapter apply to the
engine and not to the aircraft. Refer to the Aircraft Manufacturer’s manual for airframe
inspection requirements.
The inspections are progressive; commencing from the date the engine is placed in
service. The inspection intervals are tracked by Engine Log entries and designated by
hours of operation or calendar time, whichever occurs first. Inspection techniques must be
executed consistently for reliability.
6-3. Time Between Overhaul
Continental provides operational limitations and instructions for your engine along with the
requirements for continued airworthiness as specified in the engine Operator Manuals,
Maintenance Manuals, Overhaul Manuals, and Service Documents. The Time Between
Engine Overhaul provided in this document applies only to engines that have been operated
and maintained in accordance with these instructions. Engine mounted components and
accessories require overhaul at the same hourly and calendar intervals as the engine, unless
otherwise specified by the component or accessory manufacturer.
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Engine Inspection and Service
An engine’s published TBO DOES NOT mean that every engine will operate the number
of hours or years listed without requiring component replacements and/or unscheduled
maintenance events. Noncompliance with Continental instructions for continued
airworthiness, operational and/or environmental factors may necessitate repair or
replacement of the engine, engine components and accessories earlier than the published
TBO.
TBO periods were established on most Continental engines beginning in the 1960s. Since
that time, Continental has made significant engineering improvements to virtually all
major engine components. Continental has refined manufacturing processes and
implemented computer numerical controlled (CNC) machining tools enabling Continental
factory engines to meet higher standards than possible when the engines were originally
granted FAA Type Certificates. These improvements have enabled Continental to increase
TBO limits for many of our new and rebuilt engines.
Continental recommends the following factors be used, along with the engine’s published
TBO, to determine the engine’s continued airworthiness:
1. Environmental corrosion occurs internally and externally on an engine. This
naturally occurring process can affect continued airworthiness of the engine and
engine mounted components or accessories. Regardless if the engine has been
operated regularly or has been in storage; gaskets, seals, and synthetic and natural
rubber goods deteriorate over time. Replace or overhaul the engine upon
accumulating the operating hours specified in Table 6-1, or twelve (12) years after
being placed in service, whichever occurs first.
2. For engines used in aerial spraying, TBO is 1200 hours or twelve (12) years
whichever occurs first.
3. Engines used in parachute jumping, glider towing, banner towing, blimp propulsion,
or other unusually stressful applications may require more frequent overhauls than
listed.
4. The quality of parts, accessories and workmanship utilized during routine
maintenance, engine top overhaul and major overhaul has a direct effect on the
service life of the engine. Also, the maintenance and condition of engine-related
components - including, but not limited to, propeller, propeller governor, vacuum
pump, gear driven alternator, mount, baffles, instrumentation, and controls has a
direct effect on engine durability. The TBO periods listed are predicated on the
engine having been maintained according to the Instructions for Continued
Airworthiness, (ICA) accepted by the FAA, specified in the engine Maintenance
Manual, Overhaul Manual, and Service Documents, and operated within the
limitations published in the engine operating instructions or the aircraft
manufacturer’s Aircraft Flight Manual / Pilot’s Operating Handbook (AFM / POH).
5. Continental does not provide a TBO for engines that have been:
• Assembled with parts not supplied by Continental
• Assembled with parts that do not conform to the original FAA approved type
design for the engine
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Engine Inspection and Service
• Modified from the original type certificate configuration
• Overhauled or repaired in a manner that is inconsistent with the specifications,
limits, and instructions provided in the Continental Instructions for Continued
Airworthiness and FAA Airworthiness Directives
6. The “Hobbs Meter” is commonly used by the aviation industry as an acceptable
device to record time elapsed while electrical power is applied to the device. The
conditions under which the Hobbs Meter records operation vary widely within the
aviation industry. Continental does not specify a method to record engine operating
hours, rather, Continental defers to the end application installer.
NOTE: TBO periods specified in this document are only estimates and do
not reflect warranty periods. For engine warranty coverage, refer to the
original Aircraft Engine Warranty received with the engine.
Table 6-1. Engine Time Between Overhaul (TBO)
HOURS/YEARS
ENGINE MODELSEE NOTE
A65, A75 and C75, C85, C90 Series
O-200-A, B
O-200-D
IO-240-A, B
IOF-240-B
IO-346-A
C125, C145 Series and O-300-A, B, C, D
GO-300-A, C, D, E
IO-360-A, AB, B, C, D, G, H, J, K
IO-360-CB, DB, GB, HB, JB
IO-360-AF, ES, KB
TSIO-360-A, AB, B, C, D, E, F, H
LTSIO-360-E
TSIO-360-CB, DB, HB, JB
L/TSIO-360-EB, FB, GB, KB, LB, MB, RB, SB
E165, E185, E225 Series
O-470-A, B, E, G, N, P
O-470-J, K, L, M, R, S
O-470-U
IO-470-C, D, E, F, G, H, J, K, L, M, N, P, R, S, U, V, VO
TSIO-470-B, C, D
IO-520-B, BA, C, M
IO-520-A, BB, CB, D, E, F, J, K, L, MB
L/IO-520-P
1
1, 2
1
1, 2
1, 2
1
1
1
1
1, 2
1, 2
1
1
1, 2
1, 2
1
1
1, 2
1, 2, 3
1, 2
1
1
1, 2
1, 2
ENGINE
S/N BEFORE
1006000
ENGINE
S/N 1006000
AND LATER
1800/12
1800/122000/12
2000/122200/12
1500/12
1800/12
1200/12
1500/12
1500/121700/12
2000/122200/12
1400/12
1400/121600/12
1800/122000/12
1500/12
1500/121700/12
2000/122200/12
1500/121700/12
1400/12
1700/12
1700/121900/12
2000/122200/12
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Engine Inspection and Service
Table 6-1. Engine Time Between Overhaul (TBO)
HOURS/YEARS
ENGINE MODELSEE NOTE
GTSIO-520-F, K
GTSIO-520-C, D, H
GTSIO-520-L, M, N
GTSIO-520-S
TSIO-520-B, D, E, J, K, L, N
TSIO-520-BB, C, DB, EB, G, H, JB, KB, LB, M, P, R, T
TSIO-520-NB
TSIO-520-M, P, R
TSIO-520-AF, CE, UB, VB, WB
L/TSIO-520-AE
TSIO-520-BE
IO-550-A, B, C, D, E, F, L
IO-550-G, N, P, R
IOF-550-N
TSIO-550-B, E
TSIO-550-C, G, J, K, N
TSIOF-550-D, J, K, P
TSIOL-550-A, B, C
1
1, 4
1
1
1
1, 2
1, 2
1, 2, 5
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
1
ENGINE
S/N BEFORE
1006000
ENGINE
S/N 1006000
AND LATER
1200/12
1600/12
N/A1800/12
1400/12
1400/121600/12
1600/121800/12
2000/122200/12
1700/121900/12
2000/122200/12
1600/121800/12
2000/122200/12
2000/12
1. If an engine consistently accumulates 40 or more hours per month since being placed in service, add 200 hours to recommended TBO.
2. Engines with Serial Number 1006000 or higher include an additional 200 hours to TBO (as noted in Table 6-1, column 3).
3. Applies to: new and rebuilt O-470U Model Specifications 11, 12, 13, 14, 17, 18, and subsequent numbers manufactured, new or rebuilt, or
overhauled (2002 or later).
4. Applies to GTSIO-520-C, D, H engine models listed utilizing cylinder part number 653453, or superseding (cylinder production released
APRIL 1993-verify part number on cylinder flange). Also, all parts must be replaced as directed by the applicable current service bulletins,
illustrated parts catalogs, and overhaul manuals. A log book entry is required.
5. Applies to new and rebuilt TSIO-520-M Spec. 6, 7, and 8; TSIO-520-P Spec. 5 and 6; TSIO-520-R Spec. 7, 9, 10, and 11, or new and rebuilt
TSIO-520-M, P, and R model engines with subsequent specification numbers.
6-4
CHANGE 3
Standard Practice Maintenance Manual
6 January 2023
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