Rotax 912 i Series Maintenance Manual
  1. Manuals
  2. Brands
  3. Rotax Manuals
  4. Engine
  5. 912 i series
  6. Maintenance manual

Rotax 912 i Series Maintenance Manual

Line maintenance
Hide thumbs Also See for 912 i Series:
Table of Contents

Advertisement

Quick Links

See also: Operator's Manual , Installation Manual
AIRCRAFT ENGINES
ref. no.: MML-912 i | part no.: 898743

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 912 i Series and is the answer not in the manual?

Questions and answers

Related Manuals for Rotax 912 i Series

Summary of Contents for Rotax 912 i Series

  • Page 1 AIRCRAFT ENGINES ref. no.: MML-912 i | part no.: 898743...
  • Page 2 GmbH & CO KG, Austria, acc, BGBI 1984 no. 448, and shall not, without prior written permission of BRP-Rotax 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. The Manual must remain with the engine/aircraft in case of sale.
  • Page 3 05–20–00 – SCHEDULED MAINTENANCE CHECKS Chapter 05–50–00 – UNSCHEDULED MAINTENANCE CHECKS Chapter 12–00–00 – MAINTENANCE OF THE SYSTEMS Chapter 12–10–00 – REPLENISHING OPERATING FLUIDS Chapter 12–20–00 – SCHEDULED MAINTENANCE Effectivity: 912 i Series Content Edition 2/Rev. 0 Page 1 September 01/2018...
  • Page 4 BRP-Rotax MAINTENANCE MANUAL LINE INTENTIONALLY LEFT BLANK Page 2 Effectivity: 912 i Series September 01/2018 Edition 2/Rev. 0...
  • Page 5 ROTAX® authorized Aircraft Engines Distributors or their independent Service Center. BRP-Rotax wishes you much pleasure and satisfaction flying your aircraft powered by this ROTAX®-aircraft engine. The structure of the Manual follows whenever it is possible the structure of the ATA (Air Transport Association) standards.
  • Page 6 BRP-Rotax MAINTENANCE MANUAL LINE INTENTIONALLY LEFT BLANK Page 2 Effectivity: 912 i Series September 01/2018 Edition 2/Rev. 0...
  • Page 7 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 04-00-00 September 01 2018 September 01 2018 September 01 2018 September 01 2018 Effectivity: 912 i Series Edition 2/Rev. 0 Page 1 September 01/2018...
  • Page 8 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 Effectivity: 912 i Series Edition 2/Rev. 0 Page 2 September 01/2018...
  • Page 9 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 September 01 2018 Index Rear page Effectivity: 912 i Series Edition 2/Rev. 0 Page 3 September 01/2018...
  • Page 10 BRP-Rotax MAINTENANCE MANUAL LINE INTENTIONALLY LEFT BLANK Page 4 Effectivity: 912 i Series September 01/2018 Edition 2/Rev. 0...
  • Page 11 Sept. 01 2018 DOA* 05-20-00 Sept. 01 2018 DOA* 05-50-00 Sept. 01 2018 DOA* 12-00-00 Sept. 01 2018 DOA* 12-10-00 Sept. 01 2018 DOA* 12-20-00 Sept. 01 2018 DOA* Effectivity: 912 i Series Edition 2/Rev. 0 Page 1 September 01/2018...
  • Page 12 Summary of the relevant amendments in this context, but without requirement on completeness. page chapter date of change comment Sept. 01 2018 new layout and change of company name Effectivity: 912 i Series Edition 2/Rev. 0 Page 2 September 01/2018...

  • Page 13: Table Of Contents

    Type description............................3 Scope of supply.............................4 Abbreviations and terms .........................5 Conversion table ...........................9 Safety notice ............................10 Safety information ..........................11 Instruction............................13 Maintenance Concept..........................14 Technical documentation........................15 Use for intended purpose ........................17 Effectivity: 912 i Series 00–00–00 Edition 2/Rev. 0 Page 1 September 01/2018...

  • Page 14: General

    GENERAL In this Manual all ROTAX® 912 i Series engines are described. NOTE ROTAX® 912 i Series includes 912 iS, 912 iS Sport and 912 iSc Sport. Purpose For detailed information related to aircraft and aircraft/engine installation, maintenance, safety- or flight operation, consult the documentation provided by the aircraft manufacturer and/or dealer.

  • Page 15: Type Description

    2 for configura- tion 3 NOTE Conversion of the version 2 to version 3 and vice versa may be accomplished by BRP-Rotax Authorized Distributors or their Service Center. Effectivity: 912 i Series 00–00–00 Edition 2/Rev. 0 Page 3 September 01/2018...

  • Page 16: Scope Of Supply

    • Electric starter • Fuel pump assy. Optional Preparation for hydraulic governor for constant speed propeller: (configuration 3 only) • Exhaust system • Cooling air baffle • Engine suspension frame 00–00–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 4 September 01/2018...

  • Page 17: Abbreviations And Terms

    American Wire Gauge Controller Area Network Coil 1–4 Ignition coils 1–4 CPS 1+2 Crankshaft Position Sensor 1+2 Constant Speed Actuator Cooling Temperature Sensor clockwise counter-clockwise CGSB Canadian General Standards Board Effectivity: 912 i Series 00–00–00 Edition 2/Rev. 0 Page 5 September 01/2018...
  • Page 18 ROTAX Maintenance Training International Standard Atmosphere Kilograms KNOCK Knock sensor LOPC Loss of power control MAPS 1 & 2 Manifold Air Pressure Sensor 1 & 2 00–00–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 6 September 01/2018...
  • Page 19 Production Organisation Approval PTFE Polytetrafluoroethylene (Teflon) Power Take Off Rev. Revision ROTAX® is a trademark of BRP-Rotax GmbH & Co KG Research Octane Number RON 424 ROTAX® Norm 424 s.v. still valid (only Illustrated Parts Catalog) Serial Number Society of Automotive Engineers...
  • Page 20 Throttle potentiometer Time Since New TSNP Time Since New Part Time Since Overhaul Volt Visual Flight Rules List of Effective Pages Maintenance Manual XXXX shows the serial component number 00–00–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 8 September 01/2018...

  • Page 21: Conversion Table

    1 bar = 100 000 Pa / 1000 hPa / 100 kPa 14 —> 2.1 1 bar = 14.503 lbf/in² (psi) 16 —> 1.3 1 in Hg = 33.8638 hPa 18 —>0.8 20—> 0.52 Effectivity: 912 i Series 00–00–00 Edition 2/Rev. 0 Page 9 September 01/2018...

  • Page 22: Safety Notice

    The information and descriptions of components and systems contained in this Manual are correct at the time of publication. BRP-Rotax maintains a policy of continuous im- provement of its products without imposing upon itself any obligation to retrofit products previously manufactured.

  • Page 23: Safety Information

    • Due to the varying designs, equipment and types of aircraft, BRP-Rotax grants no war- ranty on the suitability of its engines use on any particular aircraft. Further, BRP-Rotax...
  • Page 24 • Improper engine installation, use of unsuitable piping for fuel, cooling and lubrication system and use of unsuitable wiring for electric and engine management system re- leases the engine manufacturer from any liability 00–00–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 12 September 01/2018...

  • Page 25: Instruction

    GENUINE-ROTAX®-spare parts and/or accessories. Spare parts are available at ROTAX® Authorized Distributors and their independent Service Centers. Any warranty by BRP-Rotax will become void if spare parts and/ or accessories other than GENUINE-ROTAX®-spare parts and/or accessories are used (see latest War- ranty Conditions).

  • Page 26: Maintenance Concept

    "Line Maintenance". NOTE This Manual can only be used in combination with Maintenance Manual I (Line Maintenance), as it builds upon it. 00–00–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 14 September 01/2018...

  • Page 27: Technical Documentation

    BRP-Rotax MAINTENANCE MANUAL LINE TECHNICAL DOCUMENTATION These documents form the instructions ensuring continued airworthiness of ROTAX® air- craft engines. The information contained herein is based on data and experience that are considered ap- plicable for authorized mechanics (iRMT, see Maintenance Manual Line) under normal conditions for engine removal and installation.
  • Page 28 Installation drawings and a DMU-model for (virtual) installation analysis are available from drawings the ROTAX® Authorized Distributors or their independent Service Centers on special re- quest and relevant non disclosure and copyright regulations. The illustrations in this Manual show a possible installation variant including non certified parts.

  • Page 29: Use For Intended Purpose

    Flying components can cause serious injuries. Never run an engine without propeller. The engine ROTAX® 912 iSc Sport 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 30 BRP-Rotax MAINTENANCE MANUAL LINE INTENTIONALLY LEFT BLANK Page 18 Effectivity: 912 i Series September 01/2018 Edition 2/Rev. 0...
  • Page 31 This chapter 04-00-00 provides information about “Airworthiness Limitations“. Airworthiness — NONE Limitations For the ROTAX® engine type 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.
  • Page 32 BRP-Rotax MAINTENANCE MANUAL LINE INTENTIONALLY LEFT BLANK Page 2 Effectivity: 912 i Series September 01/2018 Edition 2/Rev. 0...
  • Page 33 Introduction The information given in the Maintenance Manual is based on data and experience which are considered to be applicable for a skilled aviation mechanic (iRMT) under normal working conditions. Effectivity: 912 i Series 05–00–00 Edition 2/Rev. 0 Page 1...

  • Page 34: General Note

    We particularly emphasize that parts and accessories not supplied as genuine BRP-Rotax accessories parts are not verified for suitability by BRP-Rotax and thus are not authorized for use. In- stallation and/or use of such products may possibly change or negatively influence the constructive characteristics of the engine.

  • Page 35: Authorized Personnel

    2 year period. Valid time ROTAX® iRMT specialty ratings are valid for a 2 year period after initial instruction. Recur- rent training is required after 2 years to maintain a current 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®...

  • Page 36: Procedure Notes

    Always allow engine to cool down to ambient temperature before starting work. At maintenance of cooling, lubricating and fuel system take care without fail that no con- tamination, metal chips, foreign material and/or dirt enters the system. 05–00–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 4 September 01/2018...
  • Page 37 Re-assembly Before re-assembly check components for missing parts. Only use adhesives, lubricants, cleaning agents and solvents indicated in the maintenance instructions. Failure to comply may result in damage. Effectivity: 912 i Series 05–00–00 Edition 2/Rev. 0 Page 5 September 01/2018...

  • Page 38: Troubleshooting

    Possible problems are listed in the Operators Manual. 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 i Series. 05–00–00 Effectivity: 912 i Series Edition 2/Rev.

  • Page 39: Consumable Materials

    CONSUMABLE MATERIALS General note ATTENTION Use only the specified or technically equivalent materials from BRP-Rotax for all maintenance work. When handling chemicals, comply with all the customary reg- ulations and specifications of the producer, including the expiry date and instruc- tions of use.
  • Page 40 899789 LOCTITE 603 10 ml (0.003 gal Oil tolerant retainer retaining compound, heavy- (US)) duty Figure 2.1: Consumable materials 05–00–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 8 September 01/2018...
  • Page 41 Additional materials ATTENTION Use only the specified or technically equivalent materials from BRP-Rotax for all maintenance work. When handling chemicals, comply with all the customary reg- ulations and specifications of the producer, including the expiry date and instruc- tions of use.
  • Page 42 (especially of the sulfur and lead content of AV- GAS) with the valve material. This effect may cause hot-gas corrosion on the affected parts. 05–00–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 10 September 01/2018...

  • Page 43: Acceptable Methods, Techniques And Practice

    DIN 980. Lock washer NOTE When fitting lock washers, the curved-up ends (1) must point towards the screw head or nut. 10053 Figure 2.2: Lock washer Effectivity: 912 i Series 05–00–00 Edition 2/Rev. 0 Page 11 September 01/2018...
  • Page 44 BRP-Rotax MAINTENANCE MANUAL LINE INTENTIONALLY LEFT BLANK Page 12 Effectivity: 912 i Series September 01/2018 Edition 2/Rev. 0...
  • Page 45 Time limit for the coolant ........................6 Annual inspection ..........................6 Introduction The following checks are required at the times specified. This preventative maintenance is to help avoid and/or detect possible engine issues. Effectivity: 912 i Series 05–10–00 Edition 2/Rev. 0 Page 1 September 01/2018...

  • Page 46: Definition Of Terms

    These precautionary maintenance measures are de- signed to avoid engine malfunctions or defects and ensure continued airworthiness of the engine. 05–10–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 2 September 01/2018...

  • Page 47: Life Cycle

    Purging of the oil system is extremely important for operation and service life of the engine and therefore the procedure must be followed meticulously. See Installation Manual for the engine type 912 i Series Chapter 79-00-00 section Purging the lubrication system.

  • Page 48: 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 a ROTAX® authorized overhaul fa- cility for inspection. Engine Engine affected engine S/N...

  • Page 49: Time Limit For Parts

    Time limit The following components and systems must be replaced every 5 years: • All rubber hoses of the cooling system (except GENUINE ROTAX® silicon hoses), which need to be checked by "on-condition" maintenance according to the instructions of continued airworthiness.

  • Page 50: Time Limit For The Coolant

    A 100 hr. inspection is to be carried out periodically after every 100 hours of operation or every 12 months,, whichever comes first. Chapter 05-20-00 section Scheduled maintenance checks. 05–10–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 6 September 01/2018...
  • Page 51 It is the responsibility of the owner and/or user to make sure that the aircraft mechanic required performing the work on the engine has access to the previous Inspection Protocols and any other required documents. Effectivity: 912 i Series 05–20–00 Edition 2/Rev. 0 Page 1...

  • Page 52: Scheduled Maintenance Checks

    • The checks performed at the 25 hr. inspection are the same as for the 100 hr. inspec- tion. This applies both to newly delivered engines and to overhauled engines. 05–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 2...

  • Page 53: Unscheduled Maintenance Checks

    Danger of overheating • For damage Radiators, Lines • Check for discoloration - and cracks Engine damage, unusu- Propeller • Undamaged and runs true al vibrations Effectivity: 912 i Series 05–20–00 Edition 2/Rev. 0 Page 3 September 01/2018...
  • Page 54 See specifics of • As specified by the aircraft Throttle control manufacturer. manufacturer See specifics of • As specified by the aircraft Governor manufacturer. manufacturer 05–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 4 September 01/2018...

  • Page 55: Visual Inspection

    Surface damage, secure seating, locking wire, securing paint and other visually evident damage. Filter and Filters and screens must be inspected for contamination and potential blockages, cleaned Screens and replaced as required. Effectivity: 912 i Series 05–20–00 Edition 2/Rev. 0 Page 5 September 01/2018...

  • Page 56: Maintenance Schedule Procedures (Maintenance Check List)

    Replacement of Replacement of equipment (e.g. fuel pump, governor..) and execution of SB (AD) must equipment be entered in the engine log book, stating S/N, TSN and date. 05–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 6 September 01/2018...

  • Page 57: Check List/Maintenance Schedule

    Engine type Engine S/N TSN (time since new) TSO (time since overhaul) ECU S/N FUSE BOX Used operating fluids: Coolant • mixture ratio Fuel • type • viscosity Effectivity: 912 i Series 05–20–00 Edition 2/Rev. 0 Page 7 September 01/2018...
  • Page 58 This check is applicable 1000 50 hr. 25 hr. 100 hr. 200 hr. 600 hr. (circle on) leaded fuel more than 30% of operation Next check due at: (TSN__________) (engine hr.) 05–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 8 September 01/2018...

  • Page 59: Maintenance Schedule

    If the first 3 are checks (General note, Differential pressure check and Inspection fine fuel filter) are acceptable then continue with the maintenance schedule. If one of the first 3 checks are not acceptable, the engine must be checked and repaired in accord- ance with the BRP-Rotax instructions for continued airworthiness. Interval Operating hours Chapter...
  • Page 60 25 hours of operation use of leaded fuel more than 30% of operation. 3) Inspection of the GENUINE ROTAX fuel filter (on the air frame) Visual inspection of the GENUINE RO- See MM of TAX® fuel filter for leaks.
  • Page 61 Inspect line bottle from expansion tank to overflow bottle for damage, leakage and clear pas- sage. Inspect venting bore in cap of overflow bottle for clear passage. Effectivity: 912 i Series 05–20–00 Edition 2/Rev. 0 Page 11 September 01/2018...
  • Page 62 Check of its connections for secure fit, damage wiring and signs of wear. 12–20–00 Inspect engine suspension and fasten- ers (GENUINE ROTAX®) for secure fit, Checking the including damage from heat, deforma- engine tion, cracks. suspension Check the airbox (GENUINE ROTAX®) incl.
  • Page 63 Inspect safety wiring, replace as necessary. 13) Engine sensors Check all temperature sensors. Check all pressure sensors. Check all exhaust gas temperature sensors. Check all speed sensors. Effectivity: 912 i Series 05–20–00 Edition 2/Rev. 0 Page 13 September 01/2018...
  • Page 64 Use of leaded fuel more than 30% of operation. Inspect overload clutch. 17) Flushing the cooling system Flushing the cooling system if large de- when replacing the coolant 12–20–00 posits found in the expansion tank or 05–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 14 September 01/2018...
  • Page 65 Check at______hr. (TSN___, TSO___) was carried out according to recommendations of the engine manu- facturer and was recorded in the Engine Log book. Location, Date_______________________ Inspector___________________________ Aircraft mechanic_____________________ Certificate No.______________________ Effectivity: 912 i Series 05–20–00 Edition 2/Rev. 0 Page 15 September 01/2018...
  • Page 66 BRP-Rotax MAINTENANCE MANUAL LINE INTENTIONALLY LEFT BLANK Page 16 Effectivity: 912 i Series September 01/2018 Edition 2/Rev. 0...
  • Page 67 After each special check/repair work, an engine test run and a leakage check must be carried out. ATTENTION Observe without fail all the specified instructions. Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0 Page 1 September 01/2018...

  • Page 68: Engine Check After Propeller Strike Incidents

    Step Lock the crankshaft into place. See relevant Maintenance Manual Line for the respective 912 i Series engine type. Loosen eight Allen screws M6 and two Allen screws M8 together with the washers from the gear cover diagonally from each other. The gear cover is held in place with two dowel pins.
  • Page 69 Allen screw M6 Figure 5.2 Puller part no. 877660 Handle Gear cover NOTE If desired, the compact special tool part no. 877540 can be used to remove the propeller gearbox. Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0 Page 3 September 01/2018...
  • Page 70 Using the hex. screw, press the gearbox housing off from the crankcase si- multaneously on the right and left. 09560 Figure 5.3 Dowel pin 8x20 Hex. screw M10x20 Hex. screw M6x40 05–50–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 4 September 01/2018...

  • Page 71: Removal Of The Drive Gear

    If necessary, carefully lever off the drive gear with 2 screwdrivers. NOTE The gear set (large and small drive gear) are part of the gearbox assy. and both must be included if sending gearbox out for inspection or overhaul. Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0 Page 5...

  • Page 72: Installation Of Propeller Gearbox

    Only use parts with the same serial number. • Clean and degrease all parts carefully. • Remove LOCTITE adhesive residue with LOCTITE 7063. • Visual inspection of the crankshaft on the power take off side. 05–50–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 6 September 01/2018...
  • Page 73 Secure the hex. nut M30x1.5 with LOCTITE 648 and screw it counter clockwise left hand threads onto the crankshaft along with the friction washer VS-30. Tightening torque 200 Nm (147 ft.lb.). Inspect the run out. Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0 Page 7...
  • Page 74 Crankshaft Hex. nut Friction washer VS-30 Serial number See Maintenance Manual Heavy for the engine type 912 i Series Chapter 72-10-00 section Wear limits (CS24). NOTE If there is slight vertical run-out, replace the nut and repeat the measurement. Step Procedure Insert 2 dowel pins 6x20 into the crankcase.
  • Page 75 NOTE If there is a large amount of resistance at a gap of approximately 10 mm, the bear- ing rollers of the roller bearing may not be in position. Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0 Page 9...
  • Page 76 6.4 diagonally from each other. Tightening torque M6: 10 Nm (89 in.lb.) Tightening torque M8: 25 Nm (18 ft.lb.) Inspect the run-out. See Maintenance Manual Heavy for the engine type 912 i Series Chapter 72-10-00 section Wear limits (CS24). 05–50–00 Effectivity: 912 i Series Edition 2/Rev.

  • Page 77: Propeller Gearbox With Integrated Overload Clutch

    After any propeller strike the following inspections must be performed before operation can continue. See also Maintenance Manual Heavy for the engine type 912 i Series 1. Inspect the engine for damage. If any damage is detected, inspect, repair or overhaul the whole engine in accordance with the relevant Manual.

  • Page 78: Checking Of The Overload Clutch

    Danger of damage to the engine suspension! Depending on the engine installa- tion (e.g. in the case of extremely lightweight engine suspension), the gearbox must be removed and the test carried out on a suitable mounting attachment. 05–50–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 12 September 01/2018...
  • Page 79 10202 Figure 5.10: Front view torque wrench propeller ange specially pre- adapter plate pared lever support of specially prepared lever 10201 Figure 5.11: Side view Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0 Page 13 September 01/2018...
  • Page 80 Remove torque multiplier and torque wrench. Remove the crankshaft. Locking pin, replace screw with new ring. Chapter 12-20-00 section Locking/loosen of the crankshaft. Install the propeller according to the manufacturers instruction. 05–50–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 14 September 01/2018...

  • Page 81: Examination After Engine Failure

    / restricted venting Oil pump defect Camshaft bearings/Conrod bearings rather consequential damage wear (low oil pressure) Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0 Page 15 September 01/2018...

  • Page 82: Returning Engine To Service After Submerging In Water

    The engine must be marked clearly “Engine submerged in water“. Define if it was fresh water or salt water. An engine which has been submerged in water must be inspected, repaired or overhauled in accordance with the BRP-Rotax instructions for continued airworthiness. See current Maintenance Manual of the respective engine type. Inspection •...

  • Page 83: Inspection In Extreme Climatic Conditions

    Flying in areas with extreme climatic conditions or in extreme altitudes requires adjust- ment of the cooling system. To do this, it is necessary to contact the aircraft manufacturer and an authorized ROTAX® aircraft engines distributor. Effectivity: 912 i Series 05–50–00...

  • Page 84: Diminished Functional Capability Of Ems

    RETURNING ENGINE TO SERVICE AFTER INFLUENCE BY FIRE General note An engine after influence by fire must be inspected, repaired or overhauled in accordance with the BRP-Rotax instructions for continued airworthiness. Inspection • Inspect all systems for correct functioning. NOTE Prior to the detailed inspection, all parts should be cleaned and inspected for burn penetration or melted materials.
  • Page 85 Step Procedure The whole engine must be inspected, repaired or overhauled in accordance with the BRP-Rotax instructions for continued airworthiness. Check that the push-rods are straight. Inspect the crankshaft for out-of-roundness and distortion. See Chapter 72- 00-00 of the latest Heavy Maintenance Manual.

  • Page 86: Exceeding Of Max. Coolant Temperature

    Proceed as instructed in table 2 135°C (275 °F) Proceed as instructed in table 1 Operating limit (See Operators Manual 912 i Series) 30 min. Time Figure 5.12: Overview and proceed: Temperature exceeded briefly 05–50–00 Effectivity: 912 i Series Edition 2/Rev. 0...

  • Page 87: Non Compliance With The Coolant Specification

    Step Procedure The whole cooling system must be inspected, repaired or overhauled in ac- cordance with the BRP-Rotax instructions for continued airworthiness. Inspect all further systems for correct functioning. Carry out detailed inspection of the affected engine components such as: •...
  • Page 88 BRP-Rotax MAINTENANCE MANUAL LINE Non compliance with the coolant specification Step Procedure Re-install the radiator cap. NOTE Run engine for a minute and replenish as required. 05–50–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 22 September 01/2018...

  • Page 89: Exceeding The Max. Permissible Oil Temperature

    Proceed as instructed in table 4 160 °C (320 °F) Proceed as instructed in table 3 Operating limit (See Operators Manual 912 i Series) 15 min. Time Figure 5.13: Overview and proceed Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0...
  • Page 90 Procedure The whole oil system must be inspected, repaired or overhauled in accord- ance with the BRP-Rotax instructions for continued airworthiness. Inspect oil level in the oil tank. Inspect oil cooler for contamination and check the entire oil circuit for cor- rect functioning.

  • Page 91: Oil Pressure Below Minimum Value

    Any exceeding of the min. admissible oil pressure must be entered by the pilot in- to the engine log book, stating duration extent of excessive pressure and pertinent details. Operating limit Proceed as instructed (See Operators Manual 912 i Series) 0.5 bar in table 5 (7.3 psi) Proceed as instructed in table 6 1 min.
  • Page 92 If after the previous checks and oil change the oil pressure is still too low, repair or overhaul the engine in accordance with the BRP-Rotax instruc- tions for continued airworthiness. Inspect all systems for correct functioning.

  • Page 93: Oil Specification Not Respected

    Purge air from oil system. Chapter 12-20-00 section Purging the oil system. Run engine for approx. 1 hour and change oil and oil filter once more, see Chapter 12–20–00 section Oil change. Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0 Page 27...
  • Page 94 Procedure Remove propeller gearbox. The gearbox must be inspected, repaired or overhauled in accordance with the BRP-Rotax instructions for continued airworthiness. Carry out detailed inspection of the affected engine components. Oil change. Remove the lowest positioned banjo screw (banjo bolt, plug screw or screw socket) and drain the remaining oil from the crankcase.

  • Page 95: 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 96: Smooth Performance Of The Engine

    If the maximum torque is exceeded, perform the following inspections: • Carry out detailed inspection of the affected gearbox components • Carry out detailed inspection of crank drive 05–50–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 30 September 01/2018...

  • Page 97: Lightning Strike

    Inspect the mechanical actuation systems in the engine. Inspect the harness. Crank the engine and check that it rotates freely. Perform an engine test run. Inspect FUSE BOX. Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0 Page 31 September 01/2018...

  • Page 98: Reporting

    In case of any relevant occurrences that may involve malfunction of the engine, the form on the next page should be filled out and sent to the responsible ROTAX® Authorized Air- craft engines distributor or their independent Service Center. This is valid for all ROTAX®...
  • Page 99 BRP-Rotax MAINTENANCE MANUAL LINE Figure 5.17: Form Effectivity: 912 i Series 05–50–00 Edition 2/Rev. 0 Page 33 September 01/2018...
  • Page 100 BRP-Rotax MAINTENANCE MANUAL LINE INTENTIONALLY LEFT BLANK Page 34 Effectivity: 912 i Series September 01/2018 Edition 2/Rev. 0...

  • Page 101: Introduction

    For reasons of clarity, only headlines and keywords are listed in the Maintenance Schedule. Please refer to the following pages for further explanation if needed. As far as possible, the content has been arranged according to system. Effectivity: 912 i Series 12–00–00 Edition 2/Rev. 0...
  • Page 102 BRP-Rotax MAINTENANCE MANUAL LINE INTENTIONALLY LEFT BLANK Page 2 Effectivity: 912 i Series September 01/2018 Edition 2/Rev. 0...
  • Page 103 The engine should always be in a horizontal position before checking the fill levels. ENVIRONMENTAL NOTE All operating materials and cleaning products endanger the environment by improper disposal. Dispose of the operating materials in an environmentally sound way! Effectivity: 912 i Series 12–10–00 Edition 2/Rev. 0 Page 1 September 01/2018...

  • Page 104: Servicing Points On The Engine

    BRP-Rotax MAINTENANCE MANUAL LINE SERVICING POINTS ON THE ENGINE Overview Figure 6.1 Expansion tank Radiator cap Oil filter Oil tank Radiator cap Oil dipstick Overflow bottle 12–10–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 2 September 01/2018...

  • Page 105: Fluid Capacities

    3.0 l (0.8 US gal.). NOTE BRP-Rotax can give an approx value on the fill capacity depending on aircraft de- sign and positions of radiators and tanks. The volume may difference from this value. Always check the relevant specifications provided by the aircraft manufacturer.

  • Page 106: Cooling System

    Special tool For accomplishment the following special tool is required.: Figure 6.2: Special tool Part number Description part no. n.a Densimeter (1) part no. n.a Glycol tester (2) 12–10–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 4 September 01/2018...
  • Page 107 Tighten the radiator cap by hand. NOTE The radiator cap must be tightened until the stop lug is contacted. Figure 6.3: Coolant check/replenish TYPICAL Radiator cap Expansion tank Effectivity: 912 i Series 12–10–00 Edition 2/Rev. 0 Page 5 September 01/2018...
  • Page 108 (engine oil temperature between 50 to 70 °C (122 - 160 °F). Switch the engine OFF. Allow the engine to cool down. Check for leaks. Check the coolant level and top up with coolant as required. 12–10–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 6 September 01/2018...

  • Page 109: Lubrication System

    (over servicing), oil will es- cape via the venting passage. Difference between “max.“ and “min“. - mark = 0.45 l (0.95 liq.pt). Effectivity: 912 i Series 12–10–00 Edition 2/Rev. 0...
  • Page 110 Check oil level - Marks on the oil dipstick. Fit the oil dipstick and tighten the oil tank cover (1) by hand. Figure 6.4: Oil level check/Replenish Oil dipstick Oil tank cover 12–10–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 8 September 01/2018...
  • Page 111 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). Switch the engine OFF. Allow the engine to cool down. Check for leaks. Effectivity: 912 i Series 12–10–00 Edition 2/Rev. 0 Page 9 September 01/2018...
  • Page 112 BRP-Rotax MAINTENANCE MANUAL LINE INTENTIONALLY LEFT BLANK Page 10 Effectivity: 912 i Series September 01/2018 Edition 2/Rev. 0...
  • Page 113 Fuel rail ..............................31 Lubrication ............................32 Oil change ............................34 Oil filter replacement..........................35 Inspecting of the oil filter components....................37 Installing new oil filter...........................39 Cleaning the oil tank ..........................40 Purging the oil system..........................42 Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 1 September 01/2018...
  • Page 114 Checking the propeller gearbox ......................52 Introduction This chapter relates in particular to the maintenance work mentioned in the Maintenance Schedule for the various engine systems and covers the work in more detail. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 2 September 01/2018...

  • Page 115: Engine Cleaning

    After each cleaning procedure, dry all electrical components such as cleaning • Battery • Ignition unit • Spark plug connector • Clamp connections etc. by use of compressed air to prevent leakage current. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 3 September 01/2018...

  • Page 116: Visual Inspection

    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 i Series Edition 2/Rev. 0 Page 4 September 01/2018...

  • Page 117: Leakage Check

    Avoid overstretching the fixing elements. Always comply with the specified torque! Complete a detailed visual inspection. When checking steel fuel lines (1), pay attention to the connection areas (2). Look for leaks and cracks. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 5...
  • Page 118 Fuel hose assy. (Steel) Pressure regulator Electric fuel pump module Fuel rail 1/3 outline line Fuel injector Electric fuel Electric fuel pump module open and inspect for leaks. pump module 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 6 September 01/2018...

  • Page 119: Differential Pressure Check

    DIFFERENTIAL PRESSURE CHECK General note m WARNING Risk of electric shock! Ignition “OFF” and system grounded! Figure 7.2: Differential pressure check. TYPICAL Adaptor Manometer/Test gauges set Orifice jet Compressor Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 7 September 01/2018...
  • Page 120 Chapter 12–20–00 section Instal- lation of spark plugs. If the value is over 25% inspection, repair or overhaul must be carried out in accordance with the BRP-Rotax instructions for continued airworthiness. • Detailed inspection of affected engine components. 12–20–00 Effectivity: 912 i Series Edition 2/Rev.

  • Page 121: Compression Check For Fault-Tracing

    Individual readings for the cylinder must not differ by more than 2 bar (29 psi). If the value is below 6 bar (87 psi), inspection, repair or overhaul must be carried out in ac- cordance with the BRP-Rotax instructions for continued airworthiness • Detailed inspection of affected engine components.
  • Page 122 MAINTENANCE MANUAL LINE Special tools For accomplishment the following special tool is required: Figure 7.3: Compression check for fault-tracing. TYPICAL Part number Description part no.: n.a. Compression tester (1) 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 10 September 01/2018...

  • Page 123: Engine Management Ecu

    Non-compliance can result in serious injuries or death! When working on the ECU, the general safety instruction must be observed. See chap- ter „INTRO“. Figure 7.4: Engine management ECU Rubber isolator Socket for APM-connector Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 11 September 01/2018...

  • Page 124: Checking Ecu

    Select the menu item BUDS in the maintenance software and print out the report. NOTE Connect and disconnect the B.U.D.S. USB-to-CAN Converter only if ECU is OFF. Non-compliance leads to entries in the error / event memory of the ECU. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 12 September 01/2018...

  • Page 125: Locking/Loosen Of The Crankshaft

    Screw the thread bolt (4) into the crankcase. While doing so, move the crankshaft to and fro slightly with the propeller until the locking screw en- gages in the recess of the crankshaft, and tighten to 10 Nm (89 in.lb). Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0...
  • Page 126 Procedure Remove the thread bolt (4) and refit crankshaft plug screw M8x20 (1) along with a new sealing ring with a dry torque of 15 Nm (133 in.lb). 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 14 September 01/2018...

  • Page 127: Test Run Of Engine

    After full-load run, conduct a short cooling run to prevent formation of va- pour lock in cylinder heads. This is necessary to prevent steam locks in the cooling and fuel system after shut-down. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0...
  • Page 128 If the oil filter has been replaced, re-tighten by hand after 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 i Series Edition 2/Rev. 0 Page 16 September 01/2018...

  • Page 129: Checking The V-Belt Tension

    General note In the case of configurations with additional auxiliary generator, inspect attachment and V- belt tension. Checking the V- belt tension Figure 7.7: Checking the V-belt tension Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 17 September 01/2018...

  • Page 130: Belt Tension Adjustment

    Press the alternator upwards and tighten allen screw (3). Then tighten hex. screw (1) M10 with tightening torque 40 Nm (30 ft.lb) and allen screw M8 (2) with tightening torque 22 Nm (16 ft.lb). 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 18 September 01/2018...

  • Page 131: Air Intake System

    BRP-Rotax MAINTENANCE MANUAL LINE AIR INTAKE SYSTEM Figure 7.9: Overview Throttle body socket Intake manifold Air filter Airbox Temperature sensor Pressure sensor Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 19 September 01/2018...

  • Page 132: Checking Air Intake System

    Never use gasoline, steam, caustic liquids, strong detergents, particle cleaning agents or high pressure cleaners during this step. ATTENTION Do not dry over open flame, with compressed air or with hot air gun. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 20 September 01/2018...
  • Page 133 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. 08865 Figure 7.11: After cleaning Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 21...

  • Page 134: Replacing The Dry Air Filter

    See chapt. 05-00-00 section: Acceptable methods, techniques and practice.Filter connection must be free of oil. ATTENTION Attach new air filter, free of grease, at connection faces, and wire-secure against loss. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 22 September 01/2018...

  • Page 135: Cooling System

    BRP-Rotax MAINTENANCE MANUAL LINE COOLING SYSTEM Figure 7.13: Overview Water pump Coolant hoses Expansion tank Radiator cap with gasket Coolant temperature sensor Overflow bottle Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 23 September 01/2018...

  • Page 136: Checking The Cooling System

    001 “Selection of suitable operation fluids“, current issue. ENVIRONMENTAL NOTE Protect the environment! Do not harm the environment by spilling coolant. Dispose coolant in an environmentally friendly manner. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 24 September 01/2018...
  • Page 137 See chapter 12-20-00 section Flushing the cooling system. Refill newly mixed coolant into the expansion tank (highest point of the cool- ing system). See chapter 12-10-00 section Coolant check/replenish. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 25...

  • Page 138: Flushing The Cooling System

    Where water-free coolant is used, the cooling system must be flushed and re- filled with conventional coolant. Step Procedure Fit radiator cap. NOTE Run the engine for a minute and replenish coolant as required. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 26 September 01/2018...

  • Page 139: Expansion Tank, Radiator Cap

    The radiator cap must be tightened fully on the expansion tank. Expansion tank Inspect sealing surface (7) and tube connection (8) of the expansion tank. Carry out visual inspection of tank for damage and scuffing marks. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 27...

  • Page 140: Overflow Bottle

    General note Accessories (including radiator, radiator hoses, hose clamps, cooling air ducts) ATTENTION Equipment is to be inspected in accordance with the Maintenance Manual of the aircraft manufacturer. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 28 September 01/2018...

  • Page 141: Fuel System

    BRP-Rotax MAINTENANCE MANUAL LINE FUEL SYSTEM Figure 7.17: Overview Fuel pump Fuel line (steel) Fuel injector Fuel rail Fuel pressure regulator Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 29 September 01/2018...

  • Page 142: Leak Tests

    Procedure Check the fuel pressure regulator (1) for damages and inspect the general condition. Perform a leak test (Fuel pumps “ON”). Inspect all connections (2) for secure attachment. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 30 September 01/2018...

  • Page 143: Fuel Pumps

    • Visual inspection of lines and connections CHECK VALVES General note Check for leaks. FUEL INJECTORS General note Check for leaks. FUEL RAIL General note Check for leaks. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 31 September 01/2018...

  • Page 144: Lubrication

    BRP-Rotax MAINTENANCE MANUAL LINE LUBRICATION Overview to oil pump back from engine 08238 Figure 7.19 Figure 7.20 Oil tank Drain screw M12x12 Oil radiator Oil filter 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 32 September 01/2018...
  • Page 145 • Replacement of the oil filter and the oil change should be effected quickly and without interruption to prevent a draining of the oil system and the hydraulic tappets. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 33...

  • Page 146: Oil Change

    ENVIRONMENTAL NOTE Protect the environment. Do not harm the environment by spilling oil. Dispose of oil in an environmentally friendly manner. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 34 September 01/2018...

  • Page 147: Oil Filter Replacement

    ATTENTION To ensure correct functioning of the oil circuit and the forced flow lubrication, use ORIGINAL-ROTAX®- oil filter only. Only these filters will ensure correct pres- sure 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 148 To remove the oil filter the following steps are necessary: Step Procedure Remove used oil filter with oil filter wrench. Clean the contact surface of the oil pump housing with a clean cloth. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 36 September 01/2018...

  • Page 149: Inspecting Of The Oil Filter Components

    If an increased amount of metal particles is found, such as brass- or bronze chips or sliver matter from bearing abrasion, repair or overhaul the engine in accordance with the BRP-Rotax in- structions for continued airworthiness. If the filter mat is clogged by foreign matter, the lube oil reaches the bearing points unfiltered via the by-pass valve in the oil filter.
  • Page 150 AE_912i_0092 Figure 7.22: Oil filter Filter housing Filter cover Gasket ring Anti-drain membrane Filter matt 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 38 September 01/2018...

  • Page 151: Installing New Oil Filter

    Tighten oil filter with 3/4 turn (270°). Inspection of the used oil filter. Chapter 12-20-00 section Inspection of the filter insert. Figure 7.23: Install oil filter Oil pump housing Contact surface Gasket Oil filter Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 39 September 01/2018...

  • Page 152: Cleaning The Oil Tank

    Fit hex. screw M12x12 with a new gasket ring. Tighten to 25 Nm (18 ft.lb). Safety wire. Reassemble the oil tank by following the same steps in reverse order. Purge the oil system. 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 40 September 01/2018...
  • Page 153 MAINTENANCE MANUAL LINE Figure 7.24: Oil tank Profile clamp Hex. screw M12x12 Oil tank cover assy. Metric/ AN O-ring Baffle insert Partition Gasket ring 12x18 Oil tank Safety wire Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 41 September 01/2018...

  • Page 154: Purging The Oil System

    Purging of the oil system is extremely important for operation and service life of the engine and therefore the procedure must be followed meticulously. See Installation Manual for the engine type 912 i Series Chapter 79-00-00 section Purging the lubrication system.
  • Page 155 Reconnect negative terminal of aircraft battery. Chapter 12–20–00 section Purging of the oil system. Equipment ATTENTION Equipment is to be inspected in accordance with the Maintenance Manual of the aircraft manufacturer. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 43 September 01/2018...

  • Page 156: Inspecting The Magnetic Plug

    Steel chips in If there are larger accumulations of metal chips on the magnetic plug, the engine must be larger numbers repaired or overhauled in accordance with the BRP-Rotax instructions for continued airworthiness. Unclear findings In the case of unclear findings:...

  • Page 157: Installation Of The Magnetic Plug

    Clean the magnetic plug. Install the magnetic plug. Tightening torque 25 Nm (18 ft lb.) Secure with safety wire. Inspect all systems for correct function. Detailed inspection of affected engine components. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 45 September 01/2018...

  • Page 158: Electric System

    BRP-Rotax MAINTENANCE MANUAL LINE ELECTRIC SYSTEM Figure 7.26: Overview Spark plug connectors Double ignition coils Ignition cable FUSE BOX Plug connectors Crankshaft position sensors Stator assy. Stator 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 46 September 01/2018...

  • Page 159: Check Of Wiring

    Inspect all 8 ignition cables to spark plug connector for corrosion or damage and tight fit and replace if necessary. Fuse unit: Check fuse plugs/relays and replace if necessary. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 47...

  • Page 160: Replacement Of Spark Plugs

    Operation with leaded fuels (e.g. AVGAS 100LL) can result in increased wear of the spark plugs. Reduce renewal intervals accordingly. Spark plugs See Illustrated parts catalog for the engine type 912 i Series. REMOVE THE SPARK PLUGS Remove Remove the spark plugs and store them according to cylinder and position.
  • Page 161 • too much oil in combustion chamber • worn cylinder and piston rings white with formation Possibly indicates one or more of the following: of melt beads • mixture too lean • leaking valves Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 49 September 01/2018...

  • Page 162: Installation Of Spark Plug

    Before every installation, the spark plug thread and the spark plug seat at the cylinder head should be cleaned (e.g. to remove residue of heat conduction compound). 12–20–00 Effectivity: 912 i Series Edition 2/Rev. 0 Page 50 September 01/2018...

  • Page 163: Fuse Unit (Fuse Box)

    Apply small amount of heat conduction compound to spark plug thread and tighten spark plug to 16 Nm (142 in. lb) on the cold engine. FUSE UNIT (FUSE BOX) General note Check plug connections and fuse plugs. Effectivity: 912 i Series 12–20–00 Edition 2/Rev. 0 Page 51 September 01/2018...

  • Page 164: Propeller Gearbox

    Propeller gearbox CHECKING THE PROPELLER GEARBOX General note See Heavy Maintenance Manual Heavy for the engine type 912 i Series. The gearbox must be inspected, repaired or overhauled in accordance with the BRP-Ro- tax instructions for continued airworthiness. Detailed inspection of the affected gearbox components in accordance chapter 72-00-00 in the Heavy Maintenance Manual.
  • Page 165 Engine management ECU ........11 Engine submerging in water.........16 Examination after engine failure ......15 Exceeding of max. admissible engine RPM ...18 Exceeding of max. coolant temperature ....20 Maintenance Concept..........14 Effectivity: 912 i Series Page 53 Edition 2/Rev. 0 September 01/2018...
  • Page 166 Use for intended purpose........17 Remove the spark plugs ........48 Replacement of spark plugs.........48 Replacing the coolant ..........24 Replacing the dry air filter ........22 Replenishing operating fluids .........1 Visual inspection ..........5, 4 Effectivity: 912 i Series Page 54 Edition 2/Rev. 0 September 01/2018...
  • Page 168 AIRCRAFT ENGINES...

This manual is also suitable for:

912 is sport912 is912 isc sport

Table of Contents