Rotax 912 iSc Maintenance Manual
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Rotax 912 iSc Maintenance Manual

912 i series
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AIRCRAFT ENGINES
ref. no.: MML-912 i | part no.: 898742

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Summary of Contents for Rotax 912 iSc

  • Page 1 AIRCRAFT ENGINES ref. no.: MML-912 i | part no.: 898742...
  • Page 2 BRP-Powertrain GmbH&Co KG, be disclosed in whole or in part to third parties. This legend shall be included on any reproduction of these data, in whole or in part. Copyright 2012 © - all rights reserved. ROTAX is a trade mark of BRP-Powertrain GmbH&Co KG. In the following document the ®...
  • Page 3 If any passages of the Manual are not clearly understood or if you have any questions, please contact an authorized distributor- or Service Cen- ter for ROTAX aircraft engines. The structure of the Manual follows whenever it is possible the structure Chapter structure of the ATA (Air Transport Association) standards.
  • Page 4 BRP-Powertrain MAINTENANCE MANUAL NOTES INTRO Effectivity: 912 i Series Edition 1/Rev. 0 page 2 January 01/2012...
  • Page 5 BRP-Powertrain MAINTENANCE MANUAL Chapter: LEP LIST OF EFFECTIVE PAGES chapter page date chapter page date Title page 05-10-00 07 01 2012 INTRO 01 01 2012 01 01 2012 01 01 2012 01 01 2012 01 01 2012 07 01 2012 01 01 2012 07 01 2012 01 01 2012...
  • Page 6 BRP-Powertrain MAINTENANCE MANUAL chapter page date chapter page date 05-50-00 01 01 2012 12-20-00 01 01 2012 01 01 2012 01 01 2012 01 01 2012 01 01 2012 07 01 2012 01 01 2012 01 01 2012 01 01 2012 01 01 2012 01 01 2012 01 01 2012...
  • Page 7 BRP-Powertrain MAINTENANCE MANUAL Chapter: TOA TABLE OF AMENDMENTS *Approval The technical content of this document is approved under the authority DOA ref. EASA.21J.048 Note: THE APPROVAL IS GIVEN TO ALL CHAPTERS EXCEPT THE AIRWORTHINESS LIMITATIONS SECTION 04-00-00 WHICH IS SUBJECT TO SPECIFIC APPROVAL OF THE EASA.
  • Page 8 BRP-Powertrain MAINTENANCE MANUAL NOTES Effectivity: 912 i Series Edition 1/Rev. 0 page 2 January 01/2012...
  • Page 9 BRP-Powertrain MAINTENANCE MANUAL Chapter: TOA SUMMARY OF AMENDMENTS Summary of the relevant amendments in this context, but without require- Content ment on completeness. current chapter page date of change comment 04-00-00 07 01 2012 Airworthiness Limitations: Approval inserted 05-10-00 07 01 2012 Time limits for parts: Fuel pressure regulator assy.
  • Page 10 BRP-Powertrain MAINTENANCE MANUAL NOTES Effectivity: 912 i Series Edition 1/Rev. 0 page 4 January 01/2012...

  • Page 11: Table Of Contents

    GENERAL NOTE This section describes this maintenance of engine type ROTAX Introduction 912 i Series. The ROTAX 912 i Series includes 912 iSc and 912 iS. NOTE: This chapter of the Maintenance Manual contains general and safety Table of contents information concerning the operation and maintenance of the aircraft engine.
  • Page 12 BRP-Powertrain MAINTENANCE MANUAL NOTES 00-00-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 2 January 01/2012...

  • Page 13: General Note

    For additional information on engines, maintenance or parts, you can also contact your nearest authorized ROTAX-aircraft engine distributor. For ROTAX Authorized Distributors for Aircraft Engines see latest Opera- ROTAX Distributors tors Manual or on the Internet at the official Website www.FLYROTAX.com.
  • Page 14 BRP-Powertrain MAINTENANCE MANUAL NOTES 00-00-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 4 January 01/2012...

  • Page 15: Abbreviations And Terms Used In This Manual

    The drop symbol indicates use of sealing agents, adhesives or lubricants (only in the Illustrated Parts Catalog). °C Degrees Celsius (Centigrade) °F Degrees Fahrenheit 912 iS see OM (Type designation) 912 iSc see OM (Type designation) Ampere AAPTS Ambient Air Pressure Temperature Sensor alternating current Ampere hour Aircraft...
  • Page 16 Instrument Flight Rules Installation Manual INJ 1-8 Injector 1-8 INTRO Introduction Illustrated Parts Catalog iRMT independent ROTAX Maintenance Technician International Standard Atmosphere kilograms List of Effective Pages MAPS 1+2 Manifold Air Pressure Sensor 1+2 MATS 1+2 Manifold Air Temperature Sensor 1+2...
  • Page 17 BRP-Powertrain MAINTENANCE MANUAL Abbreviation Description Service Instruction Service Letter Surface Mounted Devices Serial Number s.v. still valid (only Illustrated Parts Catalog) Table of amendments Type certificate Table of Contents Time Since New TSNP Time Since New Part Time Since Overhaul Volt Visual Flight Rules shows the serial component number...

  • Page 18: Conversion Table

    BRP-Powertrain MAINTENANCE MANUAL 2.1) Conversion table Units of length: Units of power: 1 mm = 0.03937 in 1 kW = 1.341 hp 1 in = 25.4 mm 1 hp = 0.7457 kW 1 ft = 12 in 1 kW = 1.3596 PS = 0.3048 m 1 PS = 0.7355 kW Units of area:...
  • Page 19 BRP-Powertrain MAINTENANCE MANUAL 3) Safety notice Although the reading of such information does not eliminate the hazard, General note understanding the information will promote its correct use. Always use common workshop safety practice. The information and components system descriptions contained in this Manual are correct at the time of publication.

  • Page 20: Safety Notice

    BRP-Powertrain MAINTENANCE MANUAL 3.1) Safety notice This information relates to the preparation and use of ROTAX aircraft General note engines and has been utilized safely and effectively by BRP-Powertrain. However, BRP-Powertrain disclaims liability for all damage and/or injuries resulting from the improper use of the contents. BRP-Powertrain requires that any service be carried out and verified by a technician that has a cur- rent iRMT rating.
  • Page 21 BRP-Powertrain MAINTENANCE MANUAL Locking devices (e.g. locking tab, self-locking fasteners, etc.) must be Locking devices installed or replaced with new ones, where specified. If the efficiency of a locking device is impaired, it must be replaced. Torque wrench tightening If not specified otherwise, the threads are not lubrica- NOTICE WARNUNG ted when fastened.

  • Page 22: Instruction

    NOTICE WARNUNG engine manufacturer. This is only warranted by use of GE- NUINE ROTAX spare parts and/or accessories (see IPC) or suitable equivalent in the manufacturer’s opinion otherwise, any limited warranty by BRP-Powertrain is null and void (see Warranty Conditions).

  • Page 23: Maintenance Concept

    BRP-Powertrain MAINTENANCE MANUAL 3.3) Maintenance Concept The maintenance functions detailed in this Manual fall into two catego- General note ries: - Maintenance I (Line Maintenance) - Maintenance II (Heavy Maintenance) Repairs beyond the levels detailed in this Manual are not recommended as maintenance functions and must be done by an authorized overhaul facility.

  • Page 24: Technical Documentation

    The status of the Manuals can be determined with the aid of the table of amend- Status ments. The first column indicates the revision state. This figure should be compa- red with the revision provided on ROTAX Aircraft Engines Website: www.FLYROTAX.com. Amendments and current versions can be downloaded free of charge.
  • Page 25 BRP-Powertrain MAINTENANCE MANUAL The illustrations in this Manual are mere sketches and show a typical arrange- Illustrations ment. They may not represent in full detail or the exact shape of the parts which have the same or similar function. Therefore deduction of dimensions or other details from illustrations is not permitted.

  • Page 26: Use For Intended Purpose

    Never run an engine without propeller. Flying components can cause serious injuries. The engine ROTAX 912 iSc is intended for use in certified aircraft. In case of doubt the regulations of the national authorities or the respective sportive federa- tions have to be observed.
  • Page 27 Introduction tions“. - NONE Airworthiness Limitations For the ROTAX type engine 912 i Series the airworthiness limitations are not applicable. NOTE: Regarding engine operating limitations see the relevant chapter “limits of operation“ in the relevant Operators Manual. Maintenance checks and replacement of defined components...
  • Page 28 BRP-Powertrain MAINTENANCE MANUAL NOTES 04-00-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 2 January 01/2012...
  • Page 29 (iRMT) under normal working conditions. In this chapter the maintenance of engine ROTAX 912 i Series is Table of contents described. The description is subdivided into sections and description of function of the various systems.
  • Page 30 BRP-Powertrain MAINTENANCE MANUAL NOTES 05-00-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 2 January 01/2012...

  • Page 31: Maintenance

    BRP-Powertrain MAINTENANCE MANUAL 1) Maintenance 1.1) General note Safety notice Non-compliance can result in serious injuries or death! WARNUNG WARNING Besides our instructions in the documentation sup- plied, also respect generally valid safety and accident preventive directives and legal regulations. The procedures and limits in this Manual constitute the manufacturers Procedures and limits...

  • Page 32: Authorized Personnel

    Maintain a suitable work environment to prevent contamination or damage to engine parts or modules. Use the required tools and fixtures as outlined in the ROTAX Maintenance Manual. Ensure reasonable and prudent maintenance practices are utilized. Ensure the requirements of the applicable regulatory authority regarding mainte- nance procedures are met.
  • Page 33 Each rating is valid for a 2 year period. ROTAX iRMT specialty ratings are valid for a 2 year period after initial Valid time instruction. Recurrent training is required after 2 years to maintain a cur- rent status.

  • Page 34: Procedure Notes

    BRP-Powertrain MAINTENANCE MANUAL 1.3) Procedure notes General note Non-compliance can result in serious injuries or WARNUNG WARNING death! When carrying out maintenance and service work, re- spect without fail all safety regulations. Ignition “OFF“ Non-compliance can result in serious injuries or WARNUNG WARNING death!
  • Page 35 BRP-Powertrain MAINTENANCE MANUAL Tool In order to avoid mechanical damage, always loosen or NOTICE WARNUNG tighten screws and nuts with specified tools. Safety wiring If during disassembling/reassembling the removal of a NOTICE WARNUNG safety item (e.g. safety wiring, self-locking fastener, etc.) should be necessary, it must be always replaced by a new one.

  • Page 36: Trouble Shooting

    BRP-Powertrain MAINTENANCE MANUAL 1.4) Trouble shooting In the Operators Manual, possible problems are listed. At the same time, a General notes brief description of the necessary remedial action is given. See chapter 4 in the Operators Manual for engine type 912 i Series. 05-00-00 Effectivity: 912 i Series Edition 1/Rev.

  • Page 37: Consumable Materials

    222. If necessary contact the manufacturer concerning the comparability. In some cases information can be obtained from the local authorized distributors and service partners for ROTAX engines. NOTE: Respect the manufacturers instruction concerning the curing time and the expiry date of the particular surface sealing compound.
  • Page 38 BRP-Powertrain MAINTENANCE MANUAL part no. Description, Application Qty. 897186 SILICONE HEAT CONDUCTION COMPOUND 150 g (0.33 lb) Application of the heat conduction compound will reduce heat transfer resistance. The grease- like, temperature-resistant silicon compound fills cavities between components and the cooling element (e.g.: spark plug-cylinder head), which otherwise do not contribute to heat conduction.
  • Page 39 BRP-Powertrain MAINTENANCE MANUAL part no. Description, Application Qty. n.a. Cleaning agents Use only approved cleaning NOTICE agents (e.g. kerosine, varsol, etc.) for cleaning all metal parts. Do not use lye-based cold cleaner or degreasing agents. Do not clean coolant or oil hoses with aggressive solutions.
  • Page 40 BRP-Powertrain MAINTENANCE MANUAL 1.6) Acceptable methods, techniques and practice All general inspection, maintenance and repair has to be carried out in General note accordance with Advisory Circular AC 43.13 from FAA. This Manual "Advisory Circular" AC describes maintenance methods, Advisory Circu- techniques and practice.
  • Page 41 BRP-Powertrain MAINTENANCE MANUAL Chapter: 05-10-00 TIME LIMITS The following checks are required at the times specified. This preventa- Introduction tive maintenance is to help avoid and/or detect possible engine issues. This chapter of the Maintenance Manual contains general information Table of contents regarding TBO and time limits on components.
  • Page 42 BRP-Powertrain MAINTENANCE MANUAL NOTES 05-10-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 2 January 01/2012...

  • Page 43: Definition Of Terms

    BRP-Powertrain MAINTENANCE MANUAL 1) Definition of terms 1.1) Operating hours All of the maintenance intervals, such as the 100 hr. inspection and the Definition engine TBO, relate to the number of operating hours of the engine. The operating hours are defined as follows in order to prevent misunder- standings and to ensure safety: - All time during which the engine is running is counted towards the total number of operating hours.

  • Page 44: General Overhaul (Tbo)

    BRP-Powertrain MAINTENANCE MANUAL 1.4) General overhaul (TBO) The time between overhauls (TBO) for all objects (such as the engine, Definition component assemblies, add-on components) is the approved length of operation under normal operating conditions before it becomes mandatory to send in these objects for an overhaul. Normal operating conditions are the conditions which comply with the manufacturer's and the aviation authority’s recommendations for the certi- fication of airworthiness.

  • Page 45: Time Limit

    NOTE: The maximum possible storage period of the engine is limited to 24 months. If this period is exceeded, the engine must be sent to an ROTAX autho- rized overhaul facility for inspection. Effectivity: 912 i Series 05-10-00 Edition 1/Rev.
  • Page 46 Extension or exceeding of the TBO by 5 % or 6 months is allowed which- Authorized ex- ceeding ever comes first. The shipment to an authorized ROTAX overhaul facility must include the Shipment following: Engine log book. Maintenance records of the engine (i.e. all maintenance check lists, and reports of operation, of maintenance, of findings and of oil analyses).

  • Page 47: Time Limit For Parts

    BRP-Powertrain MAINTENANCE MANUAL 2.1) Time limit for parts General note This time limit must be followed independently and NOTICE WARNUNG in addition to the visual inspections (see chapt. 05- 20-00 section: of the respective components. The following components and systems must be replaced every 5 years: Time limit All rubber hoses of the cooling system All rubber hoses of the fuel system (incl.
  • Page 48 BRP-Powertrain MAINTENANCE MANUAL NOTES 05-10-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 8 January 01/2012...
  • Page 49 BRP-Powertrain MAINTENANCE MANUAL Chapter: 05-20-00 SCHEDULED MAINTENANCE CHECKS The owner and/or user is primarily responsible for the maintenance and Introduction airworthiness of the engine. This includes compliance with all applicable airworthiness directives. This inspection protocol is not intended to be all-inclusive, for no such protocol can replace the knowledge and experience of a certified aircraft mechanic.
  • Page 50 BRP-Powertrain MAINTENANCE MANUAL NOTES 05-20-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 2 January 01/2012...
  • Page 51 BRP-Powertrain MAINTENANCE MANUAL 1) Scheduled maintenance checks This section lists the periodic inspections which must be carried out after Definition a specified period of operation. Periodic inspections are those which must be performed at 25, 100, 200, Intervals 600 hr. intervals in accordance with chapt. 05-20-00. section: 5.1).
  • Page 52 BRP-Powertrain MAINTENANCE MANUAL - In order to demonstrate continued airworthiness, an engine must be 25-hr. check inspected after the first 25 hours of operation. - The checks performed at the 25 hr. inspection are the same as for the 100 hr. inspection. This applies both to newly delivered engines and to overhauled engines.
  • Page 53 BRP-Powertrain MAINTENANCE MANUAL 2) Unscheduled maintenance checks An inspection of the engine must be performed if the operating limits of Operating limits exceeded the engine have been exceeded (e.g. overspeed, excessive temperature etc.), or if unusual operating conditions have occurred during operation (e.g.
  • Page 54 BRP-Powertrain MAINTENANCE MANUAL Cell-side air intake as specified by the cell manu- See specifics of manufac- system facturer turer. (NACA intake) Cell-side attach- as specified by the cell manu- See specifics of manufac- ment points of en- facturer turer. gine suspension as specified by the cell manu- See specifics of manufac- Throttle control...
  • Page 55 BRP-Powertrain MAINTENANCE MANUAL 3) Visual inspection The scope of a visual inspection generally includes, but is not necessarily General note limited to, the following. Normal operating condition, accurate alignment, leak-tightness, cleanli- Moving parts ness, ease of movement, adjustment, mechanical stress, travel, catching, extreme wear, cracks, corrosion, deformation and other visually evident damage.
  • Page 56 BRP-Powertrain MAINTENANCE MANUAL NOTES 05-20-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 8 January 01/2012...
  • Page 57 BRP-Powertrain MAINTENANCE MANUAL 4) Maintenance schedule procedures (maintenance check list) All stated checks are visual inspections for damage and wear, unless oth- Inspections erwise stated. All listed work must be carried out within the specified period. Specified period Checks are carried out as per the maintenance check lists, where type Maintenance check lists and volume of maintenance work is outlined in key words.
  • Page 58 BRP-Powertrain MAINTENANCE MANUAL NOTES 05-20-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 10 January 01/2012...
  • Page 59 BRP-Powertrain MAINTENANCE MANUAL 5) Check List/Maintenance Schedule Identification AIRCRAFT Registration number Aircraft make Aircraft model and S/N Time since new Propeller brand Propeller model and S/N Governor brand Governor model and S/N ENGINE Engine type Engine S/N ECU S/N FUSE BOX TSN (time since new) TSO (time since overhaul) Used operating fluids:...
  • Page 60 BRP-Powertrain MAINTENANCE MANUAL Identification MAINTENANCE FACILITY Maintenance workshop Address Telephone/Fax/E-mail Certificate This check is applicable (cir- 25 hr. 50 hr. 100 hr. 200 hr. 500 hr. 1000 hr. cle on) (1 leaded fuel more than 30% of operation Next check due at: _______________________________hr.
  • Page 61 BRP-Powertrain MAINTENANCE MANUAL 5.1) Maintenance Schedule Perform the following maintenance tasks at the intervals shown in the General note maintenance check list. See chapter 05-20-00 25 hr. check. Legend: do the task blank = no task required NOTE: If the points 1-3 are correct of the check list then to continue with the maintenance schedule.
  • Page 62 BRP-Powertrain MAINTENANCE MANUAL Interval Chapter Points of Inspection Signature Operating hours Reference 100 hr. indicated Inspect all oil lines for damage, leakage, hardening 12-20-00 from heat, porosity, security of connections and at- sec. 3) tachments. Verify routing is free of kinks and restric- tions.
  • Page 63 BRP-Powertrain MAINTENANCE MANUAL Interval Chapter Points of Inspection Signature Operating hours Reference 100 hr. indicated 6.) Engine external parts Inspect screws and nuts of all external parts for tight fit. Inspect safety wiring, replace as necessary. 7.) Engine cleaning Engine cleaning 12-20-00 sec.
  • Page 64 BRP-Powertrain MAINTENANCE MANUAL Interval Chapter Points of Inspection Signature Operating hours Reference 100 hr. indicated 14.) Engine displays Check all temperature sensors. Check all pressure sensors. Check both exhaust gas temperature sensors. Check all speed sensors. Check the throttle control sensor Check the knock sensor 15.) Fuel filter (air frame side) Check the fuel filter...
  • Page 65 BRP-Powertrain MAINTENANCE MANUAL Interval Chapter Points of Inspection Signature Operating hours Reference 100 hr. indicated 18.) Oil level check Verify oil level, replenish as necessary. 12-10-00 sec. 4.1) 19.) Checking the V-belt tension On configurations with auxiliary generator, check the 12-20-00 attachment and the V-belt tension.
  • Page 66 BRP-Powertrain MAINTENANCE MANUAL Interval Chapter Points of Inspection Signature Operating hours Reference 100 hr. indicated Returning engine to service On the engine identified as per point 5, on the _____________________ the________hr. Check at______hr. (TSN___, TSO___) was carried out according to recommendations of the engine manufac- turer and was recorded in the Engine Log book.
  • Page 67 BRP-Powertrain MAINTENANCE MANUAL Chapter: 05-50-00 UNSCHEDULED MAINTENANCE CHECKS Introduction In the course of special checks specify if additional NOTICE WARNUNG checks for components (e.g. hydraulic governor) is applicable. After each special check/repair work, an engine test run and a leakage check must be carried out. Observe without fail all the specified instructions.
  • Page 68 BRP-Powertrain MAINTENANCE MANUAL NOTES 05-50-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 2 January 01/2012...

  • Page 69: Engine Check After Propeller Strike Incidents

    BRP-Powertrain MAINTENANCE MANUAL 1) Engine check after propeller strike incidents A propeller strike is: Definition - Any incident while the engine is stationary or running which makes it necessary to perform repairs on the propeller. See SL-912-015 current edition. 1.1) Propeller gearbox with integrated overload clutch After any propeller strike the following inspections must be performed General note...
  • Page 70 BRP-Powertrain MAINTENANCE MANUAL NOTES 05-50-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 4 January 01/2012...

  • Page 71: Checking Of The Overload Clutch

    BRP-Powertrain MAINTENANCE MANUAL 2) Checking of the overload clutch In the event of lead deposits and/or if slipping is suspected, it will be nec- General note essary to check the overload clutch. NOTE: Slipping of overload clutch is apparent if at engine speed rise, the propeller speed does not increase at the same rate.
  • Page 72 BRP-Powertrain MAINTENANCE MANUAL Repeat the measurement several times to get a stable value. Measurement The breakaway torque is calculated on the basis of the force (F) measured in N and the length of the lever arm (L) used at the normal distance from it in m (N x m = Nm).

  • Page 73: Examination After Engine Failure

    BRP-Powertrain MAINTENANCE MANUAL 3) Examination after engine failure In order to find possible causes of the failure, it is important to pass on all General note available data. Observations on the aircraft and the engine suspension can also be of help. It is important to pay particular attention to any of the following engine phenomena to facilitate troubleshooting.
  • Page 74 BRP-Powertrain MAINTENANCE MANUAL - The whole engine must be inspected, repaired or overhauled in accor- dance with the BRP-Powertrain instructions for continued airworthi- ness. - Inspect all systems for correct functioning. - Detailed inspection of affected engine components. A rise in cylinder head temperature above normal operating limits (see Cylinder head Operators Manual) is a clear signal for a failure in the cooling system.

  • Page 75: Returning Engine To Service After Submerging

    In most cases an overhaul is necessary, in this regard send the engine without delay to an authorized ROTAX overhaul facility for inspection. If an engine was submerged into water, all electrical components (e. g.: electric fuel pumps, ignition coils, stators, spark plugs, spark plug con- nectors, electronic modules, sensors, ECU, wiring harness) must be replaced.

  • Page 76: Inspection In Extreme Climatic Conditions

    (e. g.: crankcase, cylinder, cylinder heads etc.). In most cases an overhaul is necessary, in this regard send the engine without delay to an authorized ROTAX overhaul facility for inspection. 05-50-00 Effectivity: 912 i Series Edition 1/Rev.

  • Page 77: Exceeding Of Max. Admissible Engine Rpm

    BRP-Powertrain MAINTENANCE MANUAL 3.5) Exceeding of max. admissible engine RPM General note Any exceeding of the max. admissible engine RPM NOTICE WARNUNG must be entered by the pilot into the engine log book stating duration extent of overspeeding and pertinent detail.

  • Page 78: Exceeding Of Max. Coolant Temperature

    BRP-Powertrain MAINTENANCE MANUAL 3.6) Exceeding of max. coolant temperature General note If the maximum coolant temperature is exceeded, oth- NOTICE WARNUNG er limits are also often exceeded, e.g. oil temperature. Please observe the relevant instructions. NOTE: Any exceeding of the max. admissible coolant temperature must be entered by the pilot into the engine log book, stating duration, extent of excess temperature and pertinent detail.
  • Page 79 BRP-Powertrain MAINTENANCE MANUAL Table 2. Exceeded for lon- ger than 30 min. Excess temperature for longer than 30 min. Step Procedure The whole cooling system must be inspected, repaired or overhauled in ac- cordance with the BRP-Powertrain instructions for continued airworthiness. Inspect all further systems for correct functioning.

  • Page 80: Exceeding The Max. Permissible Oil Tempera

    BRP-Powertrain MAINTENANCE MANUAL 3.8) Exceeding the max. permissible oil temperature General note If the max. permissible oil temperature is exceeded, NOTICE WARNUNG other limits are often exceeded, too, e.g. the cylinder head temperature. Please observe the relevant in- structions. NOTE: Any exceeding of the max.
  • Page 81 BRP-Powertrain MAINTENANCE MANUAL Table 3. Exceeding up to max. 160 °C Excess temperature up to max. 160 °C (320 °F) max. 15 min. (320 °F) Step Procedure The whole oil system must be inspected, repaired or overhauled in accor- dance with the BRP-Powertrain instructions for continued airworthiness. Inspect oil level in the oil tank.

  • Page 82: Oil Pressure Below Minimum Value

    BRP-Powertrain MAINTENANCE MANUAL 3.9) Oil pressure below minimum value General note If the oil pressure falls below the minimum value, other NOTICE WARNUNG limits are often exceeded, e.g. the oil temperature. Please observe the relevant instructions. NOTE: Any exceeding of the min. admissible oil pressure must be en- tered by the pilot into the engine log book, stating duration extent of excessive pressure and pertinent details.
  • Page 83 BRP-Powertrain MAINTENANCE MANUAL If the oil pressure falls below the minimum value up to max. 0.5 bar Minimum oil pres- sure falls below (50 kPa) and for max. 1 min., the cause must be determined. Table 5. 0.5 bar (50 kPa) Oil pressure below minimum permissible oil pressure up to max.

  • Page 84: Oil Specification Not Respected

    BRP-Powertrain MAINTENANCE MANUAL 3.10) Oil specification not respected NOTE: An entry by the pilot in the engine log book of all pertinent details General note is required. If by error engine was serviced with oil, which does not correspond with oil specification in the Operators Manual and the engine has been in opera- tion for less than 5 hours, the following measures must be taken: less than 5 hr.
  • Page 85 BRP-Powertrain MAINTENANCE MANUAL If the engine has been operated longer than 5 hours with engine oil not longer than 5 hr. corresponding with specification in the Operators Manual the following work is required. Oil specification not respected Step Procedure Remove propeller gearbox. The gearbox must be inspected, repaired or overhauled in accordance with the BRP-Powertrain instructions for continued airworthiness.

  • Page 86: Spark Plug Not In Accordance With Specification

    If by error any of the spark plugs were installed which are not according to General note specification of the engine manufacturer and/or not genuine ROTAX parts, the following verification will be necessary. Spark plug not in accordance with specification...

  • Page 87: Smooth Performance Of The Engine

    BRP-Powertrain MAINTENANCE MANUAL 3.13) Smooth performance of the engine Fig. General note Risk of electric shock! WARNUNG WARNING Ignition “OFF“ and system grounded! Disconnect negative terminal of aircraft battery. Inspection of smooth performance of the engine should be performed at Inspection a temperature about 0 °C to 60 °C.

  • Page 88: Lightning Strike

    Detailed findings will need to be obtained for affected components. Always replace components if visible signs of damage are evident or if you are in any doubt. Send the engine without delay to an authorized ROTAX overhaul facility Direct lightning strike for inspection.

  • Page 89: Reporting

    ROTAX aircraft engines distributor. NOTE: The form is also available from the official ROTAX AIRCRAFT ENGINES Website in electronic version. www.FLYROTAX.com Effectivity: 912 i Series 05-50-00 Edition 1/Rev.
  • Page 90 BRP-Powertrain MAINTENANCE MANUAL Form 05-50-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 24 January 01/2012...
  • Page 91 BRP-Powertrain MAINTENANCE MANUAL Chapter: 12-00-00 MAINTENANCE OF THE SYSTEMS The section “Maintenance of the systems“ is associated with other sec- Introduction tions. It serves only as a supplement to and further explanation of the maintenance check list (See 05-20-00). NOTE: For reasons of clarity, only headlines and keywords are listed in the Maintenance Schedule.
  • Page 92 BRP-Powertrain MAINTENANCE MANUAL NOTES 12-00-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 2 January 01/2012...
  • Page 93 BRP-Powertrain MAINTENANCE MANUAL Chapter: 12-10-00 REPLENISHING OPERATING FLUIDS The engine should always be in a horizontal position before checking the Introduction fill levels. ENVIRONMENT NOTE All operating materials and cleaning products endanger the environment by improper disposal. Dispose of the operating materials in an environmentally sound way! This chapter covers the steps required to replenish all operating fluids on Table of contents the engine and also provides an overview of the fill capacities.
  • Page 94 BRP-Powertrain MAINTENANCE MANUAL NOTES 12-10-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 2 January 01/2012...
  • Page 95 BRP-Powertrain MAINTENANCE MANUAL 1) General Servicing points on the engine Part Function Expansion tank Radiator cap Oil filter Oil tank Oil tank cover Oil dipstick Overflow bottle Fig. 1 Effectivity: 912 i Series 12-10-00 Edition 1/Rev. 0 page 3 January 01/2012...
  • Page 96 BRP-Powertrain MAINTENANCE MANUAL NOTES 12-10-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 4 January 01/2012...

  • Page 97: General Note

    BRP-Powertrain MAINTENANCE MANUAL 2) Fluid capacities General note The operation of the engine may be adversely affect- CAUTION WARNUNG ed if non-approved or contaminated fuel, oil or coolant are used. Any mixing of different manufacturers and types should be avoided. The use of additives may re- sult in damage.
  • Page 98 BRP-Powertrain MAINTENANCE MANUAL NOTES 12-10-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 6 January 01/2012...

  • Page 99: Cooling System

    BRP-Powertrain MAINTENANCE MANUAL 3) Cooling system 3.1) Coolant check/replenish General note Risk of Burns! Special tools WARNUNG WARNING Hot engine parts! Always allow engine to cool down to ambient temper- ature before start of any work. Risk of Burns! WARNUNG WARNING Never open the radiator cap when the cooling system is hot.
  • Page 100 BRP-Powertrain MAINTENANCE MANUAL Step Procedure Inspect coolant with densimeter or glycol tester. Strongly discolored or thick- ened coolant must be replaced. Use only coolant as recommended in the current Operators CAUTION Manual. If necessary, replenish with coolant of same composition. Tighten the radiator cap by hand.

  • Page 101: Lubrication System

    BRP-Powertrain MAINTENANCE MANUAL 4) Lubrication system 4.1) Oil level check/Replenish General note Risk of Burns! WARNUNG WARNING Hot engine parts! Always allow engine to cool down to ambient temper- ature before start of any work. Risk of electric shock! WARNUNG WARNING Ignition “OFF“...
  • Page 102 BRP-Powertrain MAINTENANCE MANUAL Step Procedure Check oil level - Marks on the oil dipstick. Fit the oil dipstick and tighten the oil tank cover (1) by hand. Engine test run is necessary: Engine test run Step Procedure Check the oil level and top up with oil as required. Operate the engine until the temperatures have stabilized for a period of 5 min (engine oil temperature between 50 to 70 °C (122 - 160 °F).
  • Page 103 BRP-Powertrain MAINTENANCE MANUAL Chapter: 12-20-00 SCHEDULED MAINTENANCE This chapter relates in particular to the maintenance work mentioned in Introduction the Maintenance Schedule for the various engine systems and covers the work in more detail. This chapter contains information which is required to perform scheduled Table of contents servicing on the engine.
  • Page 104 BRP-Powertrain MAINTENANCE MANUAL Subject Page Lubrication system Page 35 Oil change Page 37 Oil filter replacement Page 38 Install oil filter Page 38 Inspection of the oil filter insert Page 40 Cleaning the oil tank Page 41 Purging the oil system Page 43 Flushing the oil circuit Page 43...

  • Page 105: Engine Cleaning

    BRP-Powertrain MAINTENANCE MANUAL 1) Engine cleaning General note ENVIRONMENT NOTE When cleaning the engine, the dissolved residues of fuel, oil and other environment-contaminating agents are rinsed off. Collect the residual liq- uids and dispose of it in an environmentally sound way Do not use flammable liquids or caustic cleaning NOTICE WARNUNG...
  • Page 106 BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 4 January 01/2012...

  • Page 107: Visual Inspection

    BRP-Powertrain MAINTENANCE MANUAL 2) Visual inspection General visual inspection of the engine for damage or abnormalities. For General note definition and scope of visual inspection (See chapt. 05-20-00 section: 3). Take note of changes caused by temperature influence. Abnormalities During a visual inspection you should focus on the following points in par- ticular: Exhaust system Venting hoses (oil tank)

  • Page 108: Corrosion

    BRP-Powertrain MAINTENANCE MANUAL 2.2) Corrosion Corrosion is a natural process which attacks and potentially damages met- Definition als via an electro-chemical reaction. For more detailed information about different types of corrosion and corresponding methods for dealing with corrosion refer to the FAA Advisory Circular AC 43.13. See chapter “AC 43.13-1B Maintenance and Repair“.

  • Page 109: Leakage Check

    BRP-Powertrain MAINTENANCE MANUAL 3) Leakage check General note Leaking connections can lead to engine problems or NOTICE WARNUNG engine failure! Visual inspection of the whole engine for leaks. If leaks are visible, locate the cause and remedy the fault. NOTE: If a leak is suspected, the following steps must be taken: Instruction Step...
  • Page 110 BRP-Powertrain MAINTENANCE MANUAL Connections and fuel lines Graphic Part Functions Fuel line (Steel) Connections Electric fuel pump module Fig. 1 Inspect isolating flange of fuel pump for leaks. Fuel pump Check coolant hoses and connections and fittings for leakage. Examine Coolant hoses the surrounding area to see if there are any leaks! Inspect all oil feed lines from the oil tank to the oil cooler and to the engine.

  • Page 111: Checking The Compression

    BRP-Powertrain MAINTENANCE MANUAL 4) Checking the compression Fig. General note Risk of electric shock! WARNUNG WARNING Ignition “OFF“ and system grounded! To measure the compression pressure the following special tools and Special tools equipment are necessary. Part number Description n.a. Compressed air approx.
  • Page 112 BRP-Powertrain MAINTENANCE MANUAL Checking the compression. Graphic Part Function Adaptor Manometer/Test gauges set Orifice jet Compressor Fig. 2 12-20-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 10 January 01/2012...
  • Page 113 BRP-Powertrain MAINTENANCE MANUAL 4.1) Compression check for fault-tracing In the course of fault-tracing a compression check can also be per- General note formed. A compression tester is required to check compression. The compres- sion should be between 9 and 12 bar (900 kPa and 1200 kPa). Keep the propeller area clear! WARNUNG WARNING...
  • Page 114 BRP-Powertrain MAINTENANCE MANUAL Compression check for fault-tracing Graphic Part Function Compression tester Fig. 3 12-20-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 12 January 01/2012...

  • Page 115: Engine Management Ecu

    BRP-Powertrain MAINTENANCE MANUAL 5) Engine management ECU Fig. Safety notice Non-compliance can result in serious injuries or WARNUNG WARNING death! When working on the ECU, the general safety instruc- tion must be observed. See chapt. „INTRO“. 5.1) Checking ECU For checking proceed as follows: Instruction Step Procedure...
  • Page 116 BRP-Powertrain MAINTENANCE MANUAL Engine management ECU. Graphic Part Function Grounding clip Socket for APM-connector Fig. 4 12-20-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 14 January 01/2012...

  • Page 117: Locking/Loosen Of The Crankshaft

    BRP-Powertrain MAINTENANCE MANUAL 6) Locking/Loosen of the crankshaft Fig. 5. and Fig. 6 General note NOTE: The thread bolt for crankshaft locking is part of the standard tool kit supplied with each engine. Locking the Risk of Burns! WARNUNG WARNING crankshaft Hot engine parts! Always allow engine to cool down to ambient temper-...
  • Page 118 BRP-Powertrain MAINTENANCE MANUAL After completion of work/check: Loosen the crankshaft Step Procedure Remove the thread bolt (2) and refit crankshaft plug screw M8x20 (1) along with a new sealing ring with a torque of 15 Nm (133 in.lb). Locking/Loosen of the crankshaft Graphic Part Function...

  • Page 119: Test Run Of Engine

    BRP-Powertrain MAINTENANCE MANUAL 7) Test run of engine General note Danger of life threatening injuries caused by the pro- WARNUNG WARNING peller, rotating and stressed parts of the engine! Always observe the engine from a safe place while it is running. Check that the cockpit is occupied by a competent operator.
  • Page 120 BRP-Powertrain MAINTENANCE MANUAL Step Procedure After full-load run, conduct a short cooling run to prevent formation of vapour lock in cylinder heads. This is necessary to prevent steam locks in the cooling and fuel system after shut-down. Shut engine down. NOTE: On switching off the engine switch off ignition and withdraw the ignition key.

  • Page 121: Checking The V-Belt Tension

    BRP-Powertrain MAINTENANCE MANUAL 8) Checking the V-belt tension Fig. 7 Fig. 8. General note In the case of configurations with additional auxiliary generator, inspect attachment and V-belt tension. Inspect V-belt tension as per drawing below. Checking the V- belt tension Fig.
  • Page 122 BRP-Powertrain MAINTENANCE MANUAL 8.1) Belt tension adjustment To adjust the belt tension: Belt tension Step Procedure Loosen the hex. screw (1) M10 and the two M8 allen screw (2) and (3). Press the alternator upwards and tighten allen screw (3). Then tighten hex.

  • Page 123: Air Intake System

    BRP-Powertrain MAINTENANCE MANUAL 9) Air intake system 9.1) General note Overview Part Function Intake manifold Throttle body socket Air filter Airbox Temperature sensor Pressure sensor Fig. 9 Effectivity: 912 i Series 12-20-00 Edition 1/Rev. 0 page 21 January 01/2012...

  • Page 124: Checking The Air Intake System

    BRP-Powertrain MAINTENANCE MANUAL 9.2) Checking air intake system General note In the event of dust formation, clean air filter at corre- NOTICE WARNUNG spondingly shorter intervals. If filter mat is damaged, replace air filter. A dirty filter insert will not only reduce the engine per- NOTICE WARNUNG formance but might also promote premature wear of...
  • Page 125 BRP-Powertrain MAINTENANCE MANUAL Cleaning of the filter Graphic 08864 Fig. 10 After cleaning Never use gear oil, diesel or engine oil, as they attract NOTICE WARNUNG humidity. NOTE: Each filter pleat must be sprayed with oil. After 5 to 10 min. the filter will be soaked with oil, noticeable by the uni- form red coloring.

  • Page 126: Replacing The Dry Air Filter

    Attach new air filter, free of grease, at connection fac- NOTICE WARNUNG es, and wire-secure against loss. Only use dry type air filters which are specified by the aircraft manufac- Graphic turer and from ROTAX. Part Function Air filter Fig. 12 12-20-00 Effectivity: 912 i Series Edition 1/Rev.

  • Page 127: Cooling System

    BRP-Powertrain MAINTENANCE MANUAL 10) Cooling system 10.1) Checking the cooling system Overview Part Function Coolant hoses Water pump Expansion tank Radiator cap with gasket Overflow bottle Fig. 13 Effectivity: 912 i Series 12-20-00 Edition 1/Rev. 0 page 25 January 01/2012...

  • Page 128: Replacing The Coolant

    BRP-Powertrain MAINTENANCE MANUAL General note Risk of Burns! WARNUNG WARNING Hot engine parts! Always allow engine to cool down to ambient temper- ature before start of any work. Fig. Carry out visual inspection of all coolant hoses (1) for damage, leaks, Coolant hoses hardening as a result of heat and porosity.
  • Page 129 BRP-Powertrain MAINTENANCE MANUAL Step Procedure Drain the engine coolant. NOTE: If the radiator is located below the engine, also detach the lowest positioned coolant hose. Fit attachment screw (stainless steel) along with a new sealing ring. Tighten to 10 Nm (90 in.lb). If the coolant is being replaced with a different type, (conventional coolant, waterless coolant) the cooling system must be flushed.

  • Page 130: Flushing The Cooling System

    BRP-Powertrain MAINTENANCE MANUAL 10.3) Flushing the cooling system General note Hot steam can cause scalds in the face and on hands! WARNUNG WARNING Never open the radiator cap when the cooling system is hot. For safety’s sake, cover cap with a rag and open slowly.

  • Page 131: Expansion Tank, Radiator Cap

    BRP-Powertrain MAINTENANCE MANUAL 10.4) Expansion tank, radiator cap Fig. General note To equalize pressure in the cooling system, an expansion tank is required. If the pressure in the system rises above 1.2 bar (120 kPa) as the coolant warms up, the pressure relief valve (1) opens and the coolant can flow into the expansion tank via the line (5).

  • Page 132: Overflow Bottle

    BRP-Powertrain MAINTENANCE MANUAL Part Function Sealing surface Tube connections Sight glass Fig. 15 10.5) Overflow bottle Fig. General note Checking overflow bottle. Procedure Step Procedure Inspect the bottle for damage. Check the venting bore (1) in the screw cap. Inspect bracket (2) for the safety wire. Check hose connection (3).

  • Page 133: Fuel System

    BRP-Powertrain MAINTENANCE MANUAL 11) Fuel system 11.1) General note Overview Part Function Fuel pump Fuel line Fuel injector Fuel rail Fuel pressure regulator Fig. 17 Effectivity: 912 i Series 12-20-00 Edition 1/Rev. 0 page 31 January 01/2012...
  • Page 134 BRP-Powertrain MAINTENANCE MANUAL 11.2) Leak tests General note Avoid over-tightening the fastening elements. Use a NOTICE WARNUNG suitable torque wrench for all work. To check the following steps are necessary: Procedure Step Procedure Inspect all fuel lines, their connections and unions. Inspect the fuel lines for sign of chafing.

  • Page 135: Fuel Rail

    BRP-Powertrain MAINTENANCE MANUAL Fuel pressure regulator Graphic Part Function Fuel pressure regulator Connections Fig. 18 11.5) Fuel pumps Inspect the fuel pumps in accordance with the manufacturers instructions General note or the aircraft manufacturers. - Remove the housing - Visual inspection of lines and connections 11.6) Check valves Check for leaks.
  • Page 136 BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 34 January 01/2012...
  • Page 137 BRP-Powertrain MAINTENANCE MANUAL 12) Lubrication 12.1) General Overview into oil pump out from engine Part Function Oil tank Drain screw M12x12 Oil cooler Oil filter Fig. 19 Effectivity: 912 i Series 12-20-00 Edition 1/Rev. 0 page 35 January 01/2012...
  • Page 138 BRP-Powertrain MAINTENANCE MANUAL For detailed information see SI-912 i-0XX “oil change“, latest issue, and General note Fig. Risk of Burns from hot engine parts! WARNUNG WARNING Always allow engine to cool down to ambient temper- ature before start of any work. Risk of electric shock! WARNUNG WARNING...

  • Page 139: Oil Change

    BRP-Powertrain MAINTENANCE MANUAL 12.2) Oil change NOTE: Run engine to warm oil before beginning oil change procedure. Procedure To change the oil the following steps are necessary: Step Procedure Crank engine by hand to transfer the oil from the crankcase. See chapt.

  • Page 140: Oil Filter Replacement

    To ensure correct functioning of the oil circuit and the NOTICE WARNUNG forced flow lubrication, use GENUINE- ROTAX oil filter only. Only these filters will ensure correct pressure in the by-pass valve. At every oil change, unscrew the oil filter and cut open using special tool taking care not to produce chips.

  • Page 141: Install Oil Filter

    BRP-Powertrain MAINTENANCE MANUAL To mount the oil filter the following steps are necessary: Procedure Step Procedure Unscrew the oil filter with the oil filter wrench Clean the contact surface (1) of the oil pump housing (2) with a clean cloth. Apply thin film engine oil on the gasket (3) of the oil filter (4).

  • Page 142: Inspection Of The Oil Filter Insert

    BRP-Powertrain MAINTENANCE MANUAL 12.3.2) Inspection of the filter insert General note The filter insert must be inspected carefully for metal NOTICE WARNUNG chips. This inspection is important as it allows conclusions to be drawn regarding the internal condition of the engine and provides information about the possible cause of any damage.

  • Page 143: Cleaning The Oil Tank

    BRP-Powertrain MAINTENANCE MANUAL Contaminated If the oil circuit is contaminated, replace the oil cooler NOTICE WARNUNG and flush the oil circuit. See chapt. 12-20-00 section: 12.6). Proper judgement requires years of experience in repair of piston engines. Oil filter Graphic to bearings from oil pump Part...
  • Page 144 BRP-Powertrain MAINTENANCE MANUAL Procedure to clean the oil tank: Procedure Step Procedure Detach the profile clamp (2) and remove the oil tank cover (3) together with the O-ring (4) and the oil lines. Remove the inner parts of the oil tank such as the baffle insert (5) and the par- tition (6).

  • Page 145: Purging The Oil System

    BRP-Powertrain MAINTENANCE MANUAL Part Function Profile clamp Oil tank cover O-ring Baffle insert Partition Gasket ring Oil tank Safety wire Fig. 23 12.5) Purging the oil system General note Purging of the oil system is extremely important for NOTICE WARNUNG operation and service life of the engine and therefore the procedure must be followed meticulously.
  • Page 146 BRP-Powertrain MAINTENANCE MANUAL Fill the oil tank with approx. 3 l (0.8 gal (US)) of engine oil. Filling The following steps have to be carried out after refilling: Procedure The oil level in the tank must not drop below the end of NOTICE WARNUNG suction pipe, otherwise air will be sucked in again.

  • Page 147: Inspecting The Magnetic Plug

    BRP-Powertrain MAINTENANCE MANUAL 13) Inspecting the magnetic plug Fig. General note NOTE: The magnetic plug is located on the crankcase between cylinder 2 and gearbox. This inspection is important because it allows conclusions to be drawn on the internal condition of the gearbox and engine and reveals information about possible damage.

  • Page 148: Installation Of The Magnetic Plug

    BRP-Powertrain MAINTENANCE MANUAL Inspecting the magnetic plug. Graphic magneticplug acceptable not acceptable Fig. 24 13.1) Installation of the magnetic plug The following steps are necessary: Install Step Procedure Clean the magnetic plug and oil tank. Flush the oil circuit, see section 12.6) Perform purging of the oil system, see section 12.5) Install a new oil filter, see section 12.3.1) Perform engine test run in accordance with section 7)

  • Page 149: Electric System

    BRP-Powertrain MAINTENANCE MANUAL 14) Electric system Overview Part Function Spark plug connectors Double ignition Ignition cable FUSE BOX Plug connectors Crankshaft position sensor Fig. 25 Effectivity: 912 i Series 12-20-00 Edition 1/Rev. 0 page 47 January 01/2012...

  • Page 150: Check Of Wiring

    BRP-Powertrain MAINTENANCE MANUAL 14.1) Check of wiring General note Risk of electric shock! WARNUNG WARNING Switch off ignition and remove key! Risk of Burns! WARNUNG WARNING Hot engine parts! Always allow engine to cool down to ambient temper- ature before start of any work. The following steps have to be carried out: Procedure Step...

  • Page 151: Replacement Of Spark Plugs

    Ensure that the following spark plugs corresponding to engine type are Special tool employed and that the correct spark plug socket is used: Engine Part no. Designation Size of socket 912 iSc 16 mm (0.63 in) 912 iSc 16 mm (0.63 in) Part no. Designation TNr. XXXXXX TNr.

  • Page 152: Inspection Of Spark Plugs

    BRP-Powertrain MAINTENANCE MANUAL 14.2.2) Inspection of spark plugs Check heat range and adjust electrode gap correspondingly. Heat range Inspect all spark plugs for mechanical damage. Visual check Electrode gap Electrode gap Wear limit 0.6 - 0.7 mm (0.023 - 0.027 in) 0.9 mm (0.035 in) NOTE: Inspect the electrode gap also on use of new spark plugs.

  • Page 153: Installation Of Spark Plug

    BRP-Powertrain MAINTENANCE MANUAL 14.2.3) Installation of spark plug Cleaning Eyes and skin irritation! WARNUNG WARNING Rinse off with water in the case of contact with eyes or skin. May be harmful if swallowed. Before every installation, the spark plug thread and the spark plug seat at the cylinder head should be cleaned (e.g.
  • Page 154 BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 52 January 01/2012...

  • Page 155: Propeller Gearbox

    BRP-Powertrain MAINTENANCE MANUAL 15) Propeller gearbox 15.1) Checking the propeller gearbox The gearbox must be inspected, repaired or overhauled in accordance General note with the BRP-Powertrain instructions for continued airworthiness. Detailed inspection of the affected gearbox components in accordance chapt. 72-00-00 in the Heavy Maintenance Manual. Crack testing of the propeller shaft is not normally planned, but can be car- ried out if cracks are suspected.
  • Page 156 BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 i Series Edition 1/Rev. 0 page 54 January 01/2012...
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