Руководство по эксплуатации двигателя rotax 912

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Operator’s Manual

Engine serial no:_________________________

Type of aircraft:__________________________

Aircraft registration no: ___________________

Before starting the engine, read the Operator’s Manual. Failure to do so may result

in personal injuries including death.

Consult the original equipment manufacturer’s handbook for additional instructions!

The manual must remain with the engine / original equipment in case of sale.

These technical data and the information contained therein are property of

ROTAX

GmbH and must not be reproduced, neither in entirety nor partially,

®

and passed on to third parties without previous consent in writing by ROTAX

GmbH. This text must be written on every complete or partial reproduction.

Recommended price

ROTAX

part no.:899 370

®

AIRCRAFT ENGINES

for all versions of

ROTAX 912

WARNING

Copyright — ROTAX

:

ATS 100,—

DM

14,—

Edition: 0 of 1998 07 01

GmbH

®

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  1. Manuals
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  3. Rotax Manuals
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  5. 912 Series
  6. Maintenance manual
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Related Manuals for Rotax 912 Series

Summary of Contents for Rotax 912 Series

  • Page 1
    AIRCRAFT ENGINES ref. no.: MML-912 | part no.: 899191…
  • 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 2013 © — all rights reserved. ROTAX is a trade mark of BRP-Powertrain GmbH&Co KG. In the following document the ®…
  • Page 3
    Chapter 05-10-00 Scheduled maintenance checks Chapter 05-20-00 Unscheduled maintenance checks Chapter 05-50-00 Maintenance of the systems Chapter 12-00-00 Replenishing operating fluids Chapter 12-10-00 Scheduled maintenance Chapter 12-20-00 Effectivity: 912 Series INTRO Edition 3 / Rev. 0 page 1 September 01/2012…
  • Page 4
    BRP-Powertrain MAINTENANCE MANUAL NOTES INTRO Effectivity: 912 Series Edition 3 / Rev. 0 page 2 September 01/2012…
  • Page 5
    09 01 2012 01 01 2013 09 01 2012 01 01 2013 01 01 2013 05-10-00 09 01 2012 01 01 2013 09 01 2012 01 01 2013 Effectivity: 912 Series Edition 3 / Rev. 1 page 1 January 01/2013…
  • Page 6: January

    01 01 2013 09 01 2012 Rear page 09 01 2012 09 01 2012 09 01 2012 01 01 2013 01 01 2013 09 01 2012 09 01 2012 Effectivity: 912 Series Edition 3 / Rev. 1 page 2 January 01/2013…

  • Page 7: Table Of Amendments

    01 01 2013 DOA* 12-20-00 1,5,7,9,11, 01 01 2013 DOA* 12,15,24 01 01 2013 DOA* 25,32,49, 01 01 2013 DOA* 52,54,56, 01 01 2013 DOA* 60,68 01 01 2013 DOA* Effectivity: 912 Series Edition 3 / Rev. 1 page 1 January 01/2013…

  • Page 8
    BRP-Powertrain MAINTENANCE MANUAL NOTES Effectivity: 912 Series Edition 3 / Rev. 0 page 2 September 01/2012…
  • Page 9
    Change of text. possible foreign matter added 01 01 2013 Change of text. 01 01 2013 Change of text. 01 01 2013 Text deleted. 01 01 2013 Checking the friction torque: formular added. Effectivity: 912 Series Edition 3 / Rev. 1 page 3 January 01/2013…
  • Page 10
    BRP-Powertrain MAINTENANCE MANUAL NOTES Effectivity: 912 Series Edition 3 / Rev. 0 page 4 September 01/2012…
  • Page 11: Table Of Contents

    This section describes this maintenance of engine type ROTAX 912 Series. NOTES: The ROTAX 912 Series includes all engines such as the 912 A, 912 F, 912 S, 912 UL, 912 ULS and 912 ULSFR. Table of contents This chapter of the Maintenance Manual contains general and safety information concerning the operation of the aircraft engine.

  • Page 12
    BRP-Powertrain MAINTENANCE MANUAL NOTES 00-00-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 2 September 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. ROTAX ROTAX Authorized Distributors for Aircraft Engines see latest Operators Distributors Manual or on the Internet at the official Website www.FLYROTAX.com.

  • Page 14
    BRP-Powertrain MAINTENANCE MANUAL NOTES 00-00-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 4 September 01/2012…
  • Page 15: Abbreviations And Terms Used In This Manual

    Dual Capacitor Discharge Ignition Department of Transport Design Organisation Approval EASA European Aviation Safety Agency Installation Manual Engine Control Unit Exhaust Gas Temperature INTRO Introduction Engine Management System Effectivity: 912 Series 00-00-00 Edition 3 / Rev. 0 page 5 September 01/2012…

  • Page 16
    Illustrated Parts Catalog Federal Aviation Administration Federal Aviation Regulation Overhaul Manual hours Operators Manual Instrument Flight Rules iRMT independent ROTAX Maintenance Technician Table of Contents International Standard Atmosphere kilograms Airworthiness Directive magneto side motor octane number new part (only Illustrated Parts Catalog) as necessary (only Illustrated Parts Catalog) n.a.
  • Page 17
    BRP-Powertrain MAINTENANCE MANUAL Abbreviation Description Volt Visual Flight Rules List of Effective Pages Watt Maintenance Manual shows the serial component number Effectivity: 912 Series 00-00-00 Edition 3 / Rev. 0 page 7 September 01/2012…
  • Page 18: Conversion Table

    1 bar = 100 000 Pa/1000 hPa/ 100 kPa 1 bar = 14.5037 lbf/in (psi) 1 lbf/in (psi) = 0.0689 bar 1 in Hg = 33.8638 hPa 00-00-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 8 September 01/2012…

  • Page 19: Safety Notice

    ENVIRONMENTAL NOTE Environment note gives you tips and behaviors to environmental protec- tion. A revision bar outside of the page margin indicates a change to text or graphic. Effectivity: 912 Series 00-00-00 Edition 3 / Rev. 0 page 9 September 01/2012…

  • Page 20
    3.1) Safety notice General note This information relates to the preparation and use of ROTAX aircraft 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 reating.
  • Page 21
    Torque wrench If not specified otherwise, the threads are not lubricat- WARNUNG NOTICE tightening ed when fastened. Torque wrench tightening specifications must be strictly adhered to. Effectivity: 912 Series 00-00-00 Edition 3 / Rev. 0 page 11 September 01/2012…
  • Page 22: Instruction

    BRP-Powertrain. If the motor is equipped by extra accessories it must be provided (and proven) that the engine under all operating conditions comply with the limits prescribed by ROTAX. Spare parts Spare parts must meet with the requirements defined…

  • Page 23: Maintenance Concept

    «Line Maintenance». This Manual can only be used in combination with Main- NOTES: tenance Manual I (Line Maintenance), as it builds up on it. Effectivity: 912 Series 00-00-00 Edition 3 / Rev. 0 page 13 September 01/2012…

  • Page 24: Technical Documentation

    The status of the Manuals can be determined with the aid of the table of amendments. The first column indicates the revision state. This figure should be compared with the revision provided on ROTAX-WebSite: www.FLYROTAX.com. Amendments and current versions can be downloaded free of charge.

  • Page 25
    This number (e.g. 00277) is of no significance for the con- tent. Effectivity: 912 Series 00-00-00 Edition 3 / Rev. 0 page 15 September 01/2012…
  • Page 26: Use For Intended Purpose

    Bursting off parts can cause serious injuries. Never run the engine without propeller. The engine ROTAX 912 A/F/S is intended for use in certified aircraft. In case of doubt the regulations of the national authorities or the respective sportive federations have to be observed.

  • Page 27
    This chapter 04-00-00 provides information about “Airworthiness Limita- tions“. — NONE Airworthiness Limitations For the ROTAX type engine 912 Series the airworthiness limitations are not applicable. NOTE: Regarding engine operating limitations see the relevant chapter “limits of operation“ in the relevant Operators Manual.
  • Page 28
    BRP-Powertrain MAINTENANCE MANUAL NOTES 04-00-00 Effectivity: 912 Series Edition 3/Rev. 0 page 2 September 01/2012…
  • Page 29
    Table of contents In this chapter the maintenance of engine ROTAX 912 Series is described. The description is subdivided into sections and description of function of the various systems. Some overlapping maintenance instruc- tions are treated as generally valid information at the beginning of this section.
  • Page 30
    BRP-Powertrain MAINTENANCE MANUAL NOTES 05-00-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 2 September 01/2012…
  • Page 31: Maintenance

    Installation and/or use of such products may possibly change or negatively influence the constructive characteristics of the engine. For damages resulting from use of NON- GENUINE ROTAX parts and accessories manufacturer refuses any liabil- ity. Special tools Maintenance of engines and systems requires special knowledge and special tools.

  • Page 32: Authorized Personnel

    Suitable work environment to prevent contamination or damage to engine parts or modules. Suitable tools and fixtures as outlined in the ROTAX Maintenance Manual. Reasonable and prudent maintenance practices are utilized. And the Requirements of the applicable regulatory authority regarding mainte- nance procedures are met.

  • Page 33
    2 year period. Valid time ROTAX iRMT specialty ratings are valid for a 2 year period after initial instruction. Recurrent training is required after 2 years to maintain a cur- rent status. In order to be eligible for the renewal program training, the technician must be able to show and declare that they have been working on ROTAX engines during the past 2 years.
  • Page 34: Procedure Notes

    Disassembly At disassembly of the engine, mark the components as necessary to avoid any mix-up. Take care of these marks, don’t ruin them. 05-00-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 6 September 01/2012…

  • Page 35
    Before re-assembly check components whether parts are missing. Only use adhesives, lubricants, cleaning agents and solvents indicated in the maintenance instructions. If not respected, damage may be the conse- quence. Effectivity: 912 Series 05-00-00 Edition 3 / Rev. 0 page 7…
  • Page 36: Trouble Shooting

    In the Operators Manual, possible problems are listed. At the same time, a brief description of the necessary remedial action is given. See chapter 4 in the Operators Manual for engine type 912 (Series). 05-00-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 8 September 01/2012…

  • Page 37: Consumable Materials

    LOCTITE 222. If necessary contact the manufacturer con- cerning the comparability. In some cases information can be obtained from the local authorized distributors and ser- vice partners for ROTAX engines. NOTES: Respect the manufacturers instruction concerning the cur- ing time and the expire date of the particular surface seal- ing compound.

  • Page 38
    (CASTROL ZA 30 or OMV-SOFT SOL). When using solvents, observe the safety regulations for persons and environment. Screw securing paint 898570 20 ml (0.005 gal seals screws (US)) 05-00-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 10 September 01/2012…
  • Page 39
    0,5 to 1µ, which represents fine process- ing of surfaces. LOCTITE 7063 n.a. Degreasing fluid. For parts cleaning before appl- cation of adhesives and sealants. Effectivity: 912 Series 05-00-00 Edition 3 / Rev. 0 page 11 September 01/2012…
  • Page 40
    DIN 980 is positioned towards outside. Lock washer NOTES: When fitting lock washers, the curved-up ends (1) must point towards the screw head or nut. 00144 05-00-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 12 September 01/2012…
  • Page 41
    5 Time limit for rubber parts page 8 Time limit for fuel pump page 8 Time limit for the coolant page 8 Annual inspection page 8 Effectivity: 912 Series 05-10-00 Edition 3 / Rev. 0 page 1 September 01/2012…
  • Page 42
    BRP-Powertrain MAINTENANCE MANUAL NOTES 05-10-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 2 September 01/2012…
  • Page 43: Definition Of Terms

    Parts with a limited life cycle must be taken out of opera- tion and overhauled if the specified time span or number of flight hours is reached (whichever comes first). Effectivity: 912 Series 05-10-00 Edition 3 / Rev. 0 page 3…

  • Page 44: General Overhaul (Tbo)

    Purging of the oil system is extremely important for operation and service life of the engine and therefore the procedure must be followed meticu- lously. See latest installation manual Chapt. 79-00-00 “Purging the lubrication system“. 05-10-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 4 September 01/2012…

  • 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 Series 05-10-00 Edition 3 / Rev. 0…

  • Page 46
    4,427.532 1200 hr. or 10 years, whichever comes first 912 ULS from 4,427.533 up to and in- 1500 hr. or 12 years, cl. 6,775.789 whichever comes first 05-10-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 6 January 01/2013…
  • Page 47
    Extension or exceeding of the TBO by 5 % or 6 months is allowed which- ceeding ever comes first. Shipment The shipment to an authorized ROTAX overhaul facility must include the 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 48: Time Limit For Rubber Parts

    A 100 hr. inspection is to be carried out periodically after every 100 hours of operation or every 12 months, whichever comes first. See chap. 05-10-00 section: 2). 05-10-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 8 September 01/2012…

  • Page 49
    Scheduled maintenance checks page 3 Unscheduled maintenance checks page 5 Visual inspection page 7 Maintenance schedule procedures page 9 Check list/Maintenance schedule page 11 Maintenance schedule page 13 Effectivity: 912 Series 05-20-00 Edition 3 / Rev. 0 page 1 September 01/2012…
  • Page 50
    BRP-Powertrain MAINTENANCE MANUAL NOTES 05-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 2 September 01/2012…
  • Page 51
    This maintenance schedule contains a column for a 50 hr. check. This check is recommended by the manufacturer but not essential, with the exception of oil change when operating with leaded AVGAS. Effectivity: 912 Series 05-20-00 Edition 3 / Rev. 0 page 3…
  • Page 52
    — 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. 05-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 4 September 01/2012…
  • Page 53
    Danger of overheating Radiators, Lines check for discoloration — and cracks. undamaged and runs true Engine damage, unusual vibrations carry out dynamically balancing Propeller including verification of propeller track. Effectivity: 912 Series 05-20-00 Edition 3 / Rev. 0 page 5 September 01/2012…
  • Page 54
    See specifics of manufac- Throttle control facturer turer. as specified by the cell manu- See specifics of manufac- Governor facturer turer. 05-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 6 September 01/2012…
  • Page 55
    Surface damage, secure seating, locking wire, securing paint and other visually evident damage. Filter Filters and screens must be inspected for contamination and potential blockages, cleaned and replaced as required. Effectivity: 912 Series 05-20-00 Edition 3 / Rev. 0 page 7 September 01/2012…
  • Page 56
    BRP-Powertrain MAINTENANCE MANUAL NOTES 05-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 8 September 01/2012…
  • Page 57
    Replacement of Replacement of equipment (e.g. fuel pump, governor..) and execution of equipment SB (LTA) must be entered in the engine log book, stating S/N, TSN and date. Effectivity: 912 Series 05-20-00 Edition 3 / Rev. 0 page 9 September 01/2012…
  • Page 58
    BRP-Powertrain MAINTENANCE MANUAL NOTES 05-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 10 September 01/2012…
  • Page 59
    Engine type Engine S/N TSN (time since new) TSO (time since overhaul) Used operating fluids: coolant — mixture ratio fuel type viscosity AIRCRAFT OPERATOR Name Contact Address Telephone/Fax/E-mail Effectivity: 912 Series 05-20-00 Edition 3 / Rev. 1 page 11 January 01/2013…
  • Page 60
    50 hr. 100 hr. 200 hr. 600 hr. 1000 hr. (circle on) leaded fuel more than 30% of operation Next check due at: _______________________________hr. (TS________) (engine hr.) 05-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 12 January 01/2013…
  • Page 61
    Inspect line from expansion tank to overflow bottle for sec. 3.1) damage, leakage and clear passage. Inspect venting bore in cap of overflow bottle for clear passage. Effectivity: 912 Series 05-20-00 Edition 3 / Rev. 1 page 13 January 01/2013…
  • Page 62
    3.1) 5.) Checking the air intake system Inspect suspension and fasteners for secure fit, in- cluding damage from heat, deformation, cracks. 05-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 14 January 01/2013…
  • Page 63
    11.) Spark plug connectors Check that resistance spark plug connectors fit tightly every 200 hr. on the spark plugs. Minimum pull-off force is 30 N (7 lb). Effectivity: 912 Series 05-20-00 Edition 3 / Rev. 1 page 15 January 01/2013…
  • Page 64
    50 hr. 12-20-00 ter. sec. 11.3) Cut old oil filter without producing any metal chips and every 50 hr. 12-20-00 inspect filter mat. sec.11.4) Findings:_________________________________ _______________________________________ 05-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 16 January 01/2013…
  • Page 65
    19.) Engine test run Observe the safety instructions! Start the engine and run to operating temperature. 12-20-00 Limits see Operators Manual 912 series. sec. 8) Ignition check at _____ rpm engine speed. Speed drop without ignition circuit: A (Off)___________rpm…
  • Page 66
    Check at______hr. (TSN___, TSO___) was carried out according to recommendations of the engine manufac- turer and was recorded in the Engine Log book. Location, Date_______________________ Inspector___________________________ Aircraft mechanic_____________________ Certificate No.______________________ 05-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 18 January 01/2013…
  • Page 67
    19 Spark plug not in accordance with specification page 21 Non compliance of fuel quality page 21 Smooth performance of the engine page 22 Reporting page 23 Effectivity: 912 Series 05-50-00 Edition 3 / Rev. 1 page 1 January 01/2013…
  • Page 68
    BRP-Powertrain MAINTENANCE MANUAL NOTES 05-50-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 2 September 01/2012…
  • Page 69: Engine Check After Propeller Strike Incidents

    Inspect drive for governor and vacuum pump (if fitted). Inspect the crankshaft on the power take off side for out-of roundness. See chapter 72-00-00 section 3.9) of the Heavy Maintenance Manual. Re-install the gearbox. Effectivity: 912 Series 05-50-00 Edition 3 / Rev. 1 page 3…

  • Page 70: Propeller Gearbox Without Integrated Overload

    Inspect the crankshaft on the power take off side for out-of-roundness. Propeller shock load — Inspection of crankshaft distortion on installed crank- shaft. See chapter 72-00-00 section. 3.9) of the Heavy Maintenance Manual. Re-install the gearbox. 05-50-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 4 January 01/2013…

  • Page 71: Checking Of The Overload Clutch

    Because of difficult measurement of the slipping torque the breakaway torque is measured. Länge L (m)/ length L in m Kraft F in N/ force F in N Fig. 1 08054 Effectivity: 912 Series 05-50-00 Edition 3 / Rev. 0 page 5 September 01/2012…

  • Page 72
    If the value is greater or smaller than the limit value, the overload clutch must be inspected, repaired or overhauled in accordance with the BRP- Powertrain instructions for continued airworthiness. Step Procedure Release the crankshaft, see chap. 12-20-00 section: 7). 05-50-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 6 September 01/2012…
  • Page 73: Examination After Engine Failure

    The fault needs to be located and correct- Unintended engine stoppage by seizing part possible cause Oil system oil pressure too low or no oil pressure oil shortage contamination incorrect venting Oil pump defect Effectivity: 912 Series 05-50-00 Edition 3 / Rev. 0 page 7 September 01/2012…

  • Page 74
    Cooling system not enough coolant bad venting Return valve is not working malfunction Radiator contaminated Radiator cap leaking Pressure relief valve malfunction Water pump malfunction 05-50-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 8 September 01/2012…
  • Page 75: Returning Engine To Service After Submerging

    BRP-Powertrain instruc- tions for continued airworthiness. — Inspect all systems for correct functioning. — Carry out detailed inspection of affected engine components. Effectivity: 912 Series 05-50-00 Edition 3 / Rev. 1 page 9…

  • 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 Series Edition 3 / Rev.

  • Page 77: Exceeding Of Max. Admissible Engine Rpm

    Inspect crankshaft with mounted drive gear for runout and distortion. See chap. 72-00-00 section 3.9) and 3.18) of the Heavy Maintenance Manual. Check if piston had contact with valve. Check roundness of valves. Effectivity: 912 Series 05-50-00 Edition 3 / Rev. 1 page 11…

  • Page 78: Non Compliance With The Coolant Specification

    See chapt. 12-20-00 section: 9.3) Fill in with new coolant See chapt. 12-10-00 section: 3.1). Re-install the radiator cap. NOTE: Run engine for a minute and replenish as required. 05-50-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 12 January 01/2013…

  • Page 79: Exceeding Of Max. Cylinder Head Temperature

    Overview and proceed: Proceed as instructed in table 2 180 °C Proceed as (356 °F) instructed in table 1 Operating limit (See Operators Manual 912 Series) 30 min. Time Fig. 2 07140 Exceeding Table 1. up to 180 °C Exceeding up to 180 °C (356 °F)- short-term…

  • Page 80
    Check compression by carrying out a differential pressure check. All cylinder heads and cylinders must be removed and subjected to a de- tailed check including hardness testing. See chap. 72-00-00 in the Heavy Maintenance Manual. 05-50-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 14 January 01/2013…
  • Page 81: Exceeding The Max. Permissible Oil Tempera

    Proceed as instructed 160 °C in table 4 (320 °F) Proceed as instructed in table 3 Operating limit (See Operators Manual 912 Series) 15 min. Time Fig. 3 07140 Exceeding up to Table 3. max. 160 °C Excess temperature up to max. 160 °C (320 °F) max. 15 min.

  • Page 82
    Carry out detailed inspection of the affected engine components. The whole oil system (oil cooler, oil lines) must be inspected. Cut oil filter housing and inspect filter mat for foreign matter. Carry out oil change. 05-50-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 16 January 01/2013…
  • Page 83: Oil Pressure Below Minimum Value

    Graphic Overview and instruction Oil pressure Proceed as Operating limit (minimum value) 0,5 bar instructed in (See Operators Manual 912 Series) (7.25 psi) table 5 Proceed as instructed in table 6 1 min. Time Fig. 4…

  • Page 84
    Inspect pressure sensor. Inspect indicating instrument to specifications of the manufacturer, replace as required. Inspect crankcase pressure (See Installation Manual 912 Series, latest is- sue.) If no cause for the low oil pressure is found after the above checks, carry out an oil change.
  • Page 85: Oil Specification Not Respected

    Remove the lowest positioned banjo screw (1) (banjo bolt, plug screw or screw socket) and drain the remaining oil from the crankcase. Screw in ban- jo bolt or plug screw. Tightening torque see Installation Manual 912 Series. Replace oil filter. Drain oil completely from oil cooler.

  • Page 86
    Remove the lowest positioned banjo screw (1) (banjo bolt, plug screw or screw socket) and drain the remaining oil from the crankcase. Screw in banjo bolt or plug screw. Tightening torque see Installation Manual 912 Series. Replace oil filter. Check contact surfaces camshaft/hydraulic tappet.
  • Page 87: Spark Plug Not In Accordance With Specification

    General note If by error any of the spark plugs were installed which are not according to 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 88: Smooth Performance Of The Engine

    L in m Kraft F in N / force F in N NOTES: Always use a propeller guard (edge protection) when per- forming this inspection. Fig. 6 05694 05-50-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 22 January 01/2013…

  • Page 89: Reporting

    ROTAX distributor. NOTES: The form is also available from the official ROTAX AIR- CRAFT ENGINES Homepage in electronic version. www.FLYROTAX.com Register: Document type/Miscellaneous…

  • Page 90
    BRP-Powertrain MAINTENANCE MANUAL NOTES 05-50-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 24 January 01/2013…
  • Page 91
    BRP-Powertrain MAINTENANCE MANUAL Form Effectivity: 912 Series 05-50-00 Edition 3 / Rev. 0 page 25 September 01/2012…
  • Page 92
    BRP-Powertrain MAINTENANCE MANUAL NOTES 05-50-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 26 September 01/2012…
  • Page 93
    Table of contents This chapter of the Maintenance Manual contains the most common maintenance procedures. Subject Chapter Introduction 12-00-00 Replenishing operating fluids 12-10-00 Scheduled maintenance 12-20-00 Effectivity: 912 Series 12-00-00 Edition 3 / Rev. 0 page 1 September 01/2012…
  • Page 94
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-00-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 2 September 01/2012…
  • Page 95
    Subject Page General note page 3 Fluid capacities page 5 Cooling system page 7 Coolant check/replenish page 7 Lubrication system page 9 Oil level check/replenish page 9 Effectivity: 912 Series 12-10-00 Edition 3 / Rev. 0 page 1 September 01/2012…
  • Page 96
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-10-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 2 September 01/2012…
  • Page 97
    MAINTENANCE MANUAL 1) General Servicing points on the engine Part Function Expansion tank Radiator cap Oil filter Oil tank Oil tank cover Oil dipstick Fig. 1 08522 Effectivity: 912 Series 12-10-00 Edition 3 / Rev. 0 page 3 September 01/2012…
  • Page 98
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-10-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 4 September 01/2012…
  • Page 99: General Note

    MIN mark corresponds to 2.5 l Refer to the corresponding chapter (0.66 US gal.) and MAX mark in the Installation Manual corresponds to 3.0 l (0.8 US gal.) Effectivity: 912 Series 12-10-00 Edition 3 / Rev. 0 page 5 September 01/2012…

  • Page 100
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-10-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 6 September 01/2012…
  • Page 101: Cooling System

    The radiator cap must be tightened until the stop lug is contacted. Special tools For accomplishment the following special tool is required. Part number Description n.a. (1) Densimeter n.a. (2) Glycol tester Effectivity: 912 Series 12-10-00 Edition 3 / Rev. 0 page 7 September 01/2012…

  • Page 102
    Allow the engine to cool down. Check for leaks. Check the coolant level and top up with coolant as required. Graphic Coolant check/replenish Part Function Radiator cap Expansion tank Fig. 3 08523 12-10-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 8 September 01/2012…
  • Page 103: Lubrication System

    Replenish oil as required. Only use brand name oil in accordance with the latest Op- NOTICE erators Manual and SI-912-016, “Selection of suitable op- erating fluids“ latest issue. Effectivity: 912 Series 12-10-00 Edition 3 / Rev. 0 page 9 September 01/2012…

  • Page 104
    Check for leaks. Check the oil level and top up with oil as required. Graphic Oil level check/Replenish Part Function Oil tank cover Oil dipstick Fig. 4 08524 12-10-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 10 September 01/2012…
  • Page 105
    Idle speed check page 38 Operating range check page 39 Checking of the float chamber page 41 Idle speed adjustment page 43 Checking the carburetor actuation page 44 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 1 page 1 January 01/2013…
  • Page 106: Subject Page

    63 Installation of spark plug page 65 Propeller gearbox page 67 Checking the friction torque in free rotation page 67 Checking the propeller gearbox page 68 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 2 September 01/2012…

  • Page 107: Engine Cleaning

    After each cleaning procedure, dry all electrical components such as — Battery — Ignition unit — Spark plug connector — Clamp connections etc. — Plug connections etc. by use of compressed air to prevent leakage current. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 3 September 01/2012…

  • Page 108
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 4 September 01/2012…
  • Page 109: Checking The Air Filter

    To clean the air filter the following steps are necessary: Fig. 1 Fig. NOTES: The procedure for cleaning air filter applies to the K&N style filter supplied by ROTAX (BRP-Powertrain) but may vary for filters used by aircraft manufacturer. Step Procedure Lightly tap and brush off surface dirt (A).

  • Page 110
    Each filter pleat must be sprayed with oil. After 5 to 10 min. the filter will be soaked with oil, noticeable by the uniform red coloring. Fig. 2 08526 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 6 September 01/2012…
  • Page 111: Replacing The Air Filter

    Attach new air filter, free of grease, at connection fac- WARNUNG NOTICE es, and wire-secure against loss. Graphic Only use dry type air filters which are specified by the aircraft manufac- turer and from ROTAX. Part Function Air filter Safety wire Carburetor Fig.

  • Page 112
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 8 September 01/2012…
  • Page 113: Visual Inspection

    If there is discoloration of the crankcase around the attachment points (black ring), there may be loose attachments. Inspect engine isolating mounts for heat damage, wear and cracks. Visual inspection of the engine suspension frame for cracks. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 1 page 9…

  • Page 114: Corrosion

    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“. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 10 September 01/2012…

  • Page 115: Leakage Check

    Detailed visual inspection specially on steel fuel lines in the area of con- nections (fittings) (2) for leaks and cracks is necessary. See Fig. 4. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 1 page 11…

  • Page 116
    Check all hoses, particularly in the area of the hose clamps and hose con- kinks nections, for porosity, damage and kinks. If damage is detected, replace hose immediately. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 12 January 01/2013…
  • Page 117: Checking The Compression

    If the value is over 25% inspection, repair or overhaul must be carried out in accordance with the BRP-Powertrain instructions for continued airwor- thiness. — Detailed inspection of affected engine components. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 13…

  • Page 118
    BRP-Powertrain MAINTENANCE MANUAL Graphic Checking the compression. Part Function Adaptor Manometer/Test gauges set Orifice jet Compressor Fig. 5 08529 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 14 September 01/2012…
  • Page 119
    BRP-Powertrain instructions for contin- ued airworthiness. — Detailed inspection of affected engine components. Graphic Compression check for fault-tracing Part Function Compression tester Fig. 6 08651 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 1 page 15 January 01/2013…
  • Page 120
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 16 September 01/2012…
  • Page 121: Checking The V-Belt Tension

    In the case of configurations with additional auxiliary generator, inspect attachment and V-belt tension. Checking the V- Inspect V-belt tension as per drawing below. belt tension Fig. 7 08663 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 17 September 01/2012…

  • Page 122
    M8 (2) with tightening torque 22 Nm (195 in.lb). Graphic Checking the V-belt tension Part Function Hex. screw M10 2, 3 Allen screw M8 Fig. 8 00353 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 18 September 01/2012…
  • Page 123: Locking The Crankshaft

    (3) is between the both trigger coil (4, 5) at the position. The required recess position of the crankshaft can be addi- tionally verified by looking through the crankcase recess (6) with a flash light. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 19 September 01/2012…

  • Page 124
    15 Nm (133 in.lb). Graphic Locking the crankshaft Part Function Plug screw M8x20 Thread bolt Trigger boss Trigger coils Crankshaft Hex. screw M16x1,5×40 Fig. 10 08530,08531 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 20 September 01/2012…
  • Page 125: Test Run Of Engine

    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. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0…

  • Page 126
    If the oil filter has been replaced, re-tighten by hand af- WARNUNG NOTICE ter the trial run on a cold engine. Check of leaks Inspect the engine for oil, fuel or coolant leaks and repair as necessary. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 22 September 01/2012…
  • Page 127: Cooling System

    BRP-Powertrain MAINTENANCE MANUAL 9) Cooling system 9.1) Checking the cooling system Overview Part Function Coolant lines Water pump Expansion tank Radiator cap with gasket Fig. 11 08532 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 23 September 01/2012…

  • Page 128: Replacing The Coolant

    To replace the coolant the following steps are necessary: Step Procedure Open the radiator cap on the expansion tank. Remove the bottom attachment screw (1) (with sealing ring) of water pump (2). 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 24 January 01/2013…

  • Page 129
    NOTES: Run the engine briefly and replenish with clean coolant as required. Graphic Replacing the coolant Part Function Attachment screw (stainless steel) Water pump Fig. 12 08533 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 1 page 25 January 01/2013…
  • Page 130: Flushing The Cooling System

    Refill newly mixed coolant into the expansion tank (highest point of the cooling system). See chap. 12-10-00 section: 3.1). Fit radiator cap. NOTES: Run the engine for a minute and replenish coolant as required. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 26 September 01/2012…

  • Page 131: Expansion Tank, Radiator Cap

    Inspect sealing surface (7) and tube connection (8) of the expansion tank. Carry out visual inspection of tank for damage and scuffing marks. Graphic Checking Expansion tank, radiator cap. Part Function Pressure relief valve Return valve Rubber seal Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 27 September 01/2012…

  • Page 132
    BRP-Powertrain MAINTENANCE MANUAL Part Function Pressure spring Connection to overflow bottle Opening pressure of the radiator cap Sealing surface Tube connections Fig. 13 08534,07620 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 28 September 01/2012…
  • Page 133: Overflow Bottle

    Accessories (including radiator, radiator hoses, hose clamps, cooling air ducts) General note Equipment is to be inspected in accordance with the NOTICE WARNUNG Maintenance Manual of the aircraft manufacturer. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 29 September 01/2012…

  • Page 134
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 30 September 01/2012…
  • Page 135: Fuel System

    First carry out the mechanical synchronization and then the pneumatic synchronization (if required). Graphic Synchronization at idle speed Part Function Resonator hose Compensating tube Fig. 15 05491 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 31 September 01/2012…

  • Page 136: Mechanical Synchronization

    As soon as the two carburetor bowden cables are installed (throttle lever in cockpit in idle position), you must check that the idle speed adjustment screw (2) rests fully on the idle stop (3) without pressure. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 32 January 01/2013…

  • Page 137
    Mechanical synchronization Part Function Throttle valve lever Adjustment screw Idle stop position Cable fixation Return spring Idle mixture screw Idle adjustment Plug screw M3.5×5 Fig. 16 08538 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 33 September 01/2012…
  • Page 138: Pneumatic Synchronization

    Using the push on angular tube (4) and compensating tube (2) install a flexible rubber hose (5) leading to the vacuum gauge (1). Graphic Option 1 Part Function Vacuum gauge Compensations tube Clamp Angular tube Rubber hose Fig. 17 08652 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 34 September 01/2012…

  • Page 139
    (6) leading to the vacuum gauge (1). Graphic Option 2 Part Function Vacuum gauge Compensating tube Tube Clamp Angular tube Rubber hose Fig. 18 08659 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 35 September 01/2012…
  • Page 140
    After synchronization tightened the screw M6x6 (1) with LOCTITE 221. Graphic Option 3 Part Function Hex. screw M6x6 Intake manifold Compensation tube Resonator hose Fig. 19 08660 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 36 September 01/2012…
  • Page 141
    Secure screw M6x6 (4) with a new gasket (6) and LOCTITE 221. Graphic Option 4 Part Function Clamping pliers Tube Compensation tube Screw Hose nipple Sealing ring Fig. 20 08661 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 37 September 01/2012…
  • Page 142: Idle Speed Check

    If an unsatisfactory result is achieved, inspect the idle jets for contamina- result tion and clean if necessary. Also check for translucent, jelly-like contamination. In- WARNUNG NOTICE spect for free passage. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 38 September 01/2012…

  • Page 143: Operating Range Check

    Final idle speed adjustment may be required by resetting the idle speed adjust- ment screws (2). Equal adjustment must be made on both carburetors. Any major adjustments required necessitate replaced verification of all param- eters mentioned in this procedure. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 39 September 01/2012…

  • Page 144
    — Refit the screw plug M3.5 (3) and hex. screws M6x6 with gasket (pos. 1 Fig. 19). Graphic Inspect operating range/idle speed Part Function Idle adjustment Idle speed adjustment screw Screw plug M3.5×5 Idle mixture screw Fig. 21 08538 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 40 September 01/2012…
  • Page 145: Checking Of The Float Chamber

    Step Procedure Assembly at the float chamber should be carried out analogously the disas- sembly. Adjust with the idle speed adjustment. See chap. 12-20-00 section: 10.5). Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 41 September 01/2012…

  • Page 146
    BRP-Powertrain MAINTENANCE MANUAL Graphic Float chamber Part Function Drip tray Spring clip Float chamber Gasket Float Fig. 22 08653 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 42 September 01/2012…
  • Page 147: Idle Speed Adjustment

    (2) and if necessary, by slightly turning the idle mixture screw again. NOTES: Turning the idle mixture control screw in clockwise direction results in a leaner mixture and turning counter clockwise in a richer mixture. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 43 September 01/2012…

  • Page 148: Checking The Carburetor Actuation

    Adjust throttle cables to a clearance of 1mm (0.04 in). Inspect and lubricate linkage on carburetor and carburetor joints with engine oil. Inspect return springs (3) and inspect engagement holes for wear. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 44 September 01/2012…

  • Page 149
    BRP-Powertrain MAINTENANCE MANUAL Graphic Checking the carburetor actuation ~1 mm Part Function Connection for throttle valve Connection for choke actuation Return springs Fig. 23 00352 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 45 September 01/2012…
  • Page 150
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 46 September 01/2012…
  • Page 151
    MAINTENANCE MANUAL 11) Lubrication 11.1) General Overview to oil pump back from engine Part Function Oil tank Drain screw M12x12 Oil cooler Oil filter Fig. 24 08238,08650 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 47 September 01/2012…
  • Page 152
    Oil lines, Oil Oil lines and other oil connections are not normally removed. connections 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 48 September 01/2012…
  • Page 153: Oil Change

    After carrying out the oil change, the engine should be cranked by hand in the direction of engine rotation (approx. 20 turns) to completely refill the entire oil circuit. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 1 page 49…

  • Page 154: 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 155: Install Oil Filter

    Inspection of used oil filter. See therefore chap. 12-20-00 section 11.4). Inspect all systems for correct function. Graphic Install oil filter. Part Function Contact surface Oil pump housing Gasket Oil filter Fig. 26 08550 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 51 September 01/2012…

  • Page 156: Inspection Of The Oil Filter Insert

    In the case of unclear findings: Step Procedure Flush the oil circuit. Fit a new oil filter. Engine test run. See chap. 12-20-00 section: 8). Inspect the oil filter once more. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 52 January 01/2013…

  • Page 157
    Graphic Oil filter to bearings from oil pump Part Function Filter housing Filter cover Gasket ring Filter element Filter mat Fig. 27 08427,00181 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 53 September 01/2012…
  • Page 158: Cleaning The Oil Tank

    Fit hex.Double ignition screw (1) M12x12 with a new gasket ring (7). Tighten to 25 Nm (18.5 ft.lb). Safety wire (9). Reassemble the oil tank by following the same steps in reverse order. Purge the oil system. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 54 January 01/2013…

  • Page 159
    Graphic Cleaning the oil tank Part Function Hex. screw M12x12 Profile clamp Oil tank cover O-ring Baffle insert Partition Gasket ring Oil tank Safety wire Fig. 28 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 55 September 01/2012…
  • Page 160: Purging The Oil System

    The following steps have to be carried out after refilling: The oil level in the tank must not drop below the end of WARNUNG NOTICE suction pipe, otherwise air will be sucked in again. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 56 January 01/2013…

  • Page 161
    Purging of the oil system, see chap. 12-20-00 section: 11.6). Equipment Inspect all the equipment in accordance with the Main- NOTICE WARNUNG tenance Manual of the aircraft manufacturer. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 57 September 01/2012…
  • Page 162
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 58 September 01/2012…
  • Page 163: Inspecting The Magnetic Plug

    If the oil circuit is contaminated, replace the oil cooler NOTICE WARNUNG and flush the oil circuit. See chap. 12-20-00 section: 11.7)11.7). Detailed in- spection of affected engine components. Trace the cause and remedy. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 59 September 01/2012…

  • Page 164: Installation Of The Magnetic Plug

    Clean the magnetic plug and oil tank. Install magnetic plug. Tightening torque 25 Nm (18 ft.lb) Install safety wiring. Inspect all system for correct function. Detailed inspection of affected engine components. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 60 January 01/2013…

  • Page 165: Electric System

    MAINTENANCE MANUAL 13) Electric system Overview Part Function Spark plug connectors Dual ignition coil Ignition cable Electronic module Plug connectors Grounding cable Protection hose Fig. 30 08552,08553 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 61 September 01/2012…

  • Page 166: Check Of Wiring

    Inspect all 8 ignition cables to spark plug connector for corrosion or damage and tight fit and replace if necessary. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 62 September 01/2012…

  • Page 167: Inspection And Replacement Of Spark Plugs

    Remove the spark plugs and store them according to cylinder and posi- tion. Always replace both spark plugs of a cylinder and do not inter- change spark plugs between cylinders. Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 63…

  • Page 168
    Indicates the following: melt beads mixture too lean leaking valves 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 64 September 01/2012…
  • Page 169: Installation Of Spark Plug

    20 Nm (177 in.lb) on the cold engine. Graphic spark plugs Electrode gap Part Function Ground electrode Head area Fig. 31 00086 Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 65 September 01/2012…

  • Page 170
    BRP-Powertrain MAINTENANCE MANUAL NOTES 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 0 page 66 September 01/2012…
  • Page 171: Propeller Gearbox

    If the above mentioned friction torque is not achieved, in- NOTICE spect, repair or overhaul the gearbox in accordance with the instructions for continued airworthiness. Remove crankshaft locking pin. See chap. 12-20-00 section: Effectivity: 912 Series 12-20-00 Edition 3 / Rev. 0 page 67 September 01/2012…

  • Page 172: Checking The Propeller Gearbox

    72-00-00 section: 3.9) 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. 12-20-00 Effectivity: 912 Series Edition 3 / Rev. 1 page 68 January 01/2013…

  • Page 173
    AIRCRAFT ENGINES…

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