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The Light Weight Engine Houtekietstraat 11

B-8540 Deerlijk, Belgium

EFFECTIVITY

page 19

ALL

19-3-2019

ALWAYS ENSURE ALL SWITCHES ARE OFF BEFORE WORKING ON

THE LF26 ENGINE.

ENGINE OPERATION

Engine start

The LF 26 does not have a choke or hot air intake. Thanks to the twin ECU and multipoint fuel injection
system the motor may be started at any temperature without any special precaution.

The handling of the engine is based on following elements

:

•

Master switch

Activate starting system

•

Start Button

Activate the starter

•

ECU Fuse/Switch

ON/OFF switch for the ECU with fuse function

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Содержание LF26

Страница 1: ...utekietstraat 11 B 8540 Deerlijk Belgium EFFECTIVITY page 1 ALL 19 3 2019 D MOTOR International AIRCRAFT ENGINE ENGINE OWNERS MANUAL TYPE LF26 4 Cylinder Engine Publication 2019 3 LF26 D Motor Interna...

Страница 2: ...2 November 2019 V3 KGhekiere Published and printed in Belgium by D Motor International bvba Copyright 2013 2015 2019 D Motor International bvba All rights reserved This material may not be reprinted r...

Страница 3: ...FETY INFORMATION 10 MAIN SECTION 11 Technical Sheet LF26 type D Motor Engine 11 Operating limits 13 Description 15 ENGINE OPERATION 19 Engine start 19 Motor STOP 21 ENGINE Checking 21 Emergency Proced...

Страница 4: ...7 Engine does not fire 37 Warm engine shows irregular idling 38 Engine runs erratic or misfires occasionally 38 Engine overheats Oil temperature over 100 deg C 212 deg F 38 The engine does not develop...

Страница 5: ...The Light Weight Engine Houtekietstraat 11 B 8540 Deerlijk Belgium EFFECTIVITY page 5 ALL 19 3 2019 Blank Page intentional...

Страница 6: ...Motor aircraft engines are a Premium Quality European Product designed and produced in Belgium https www d motor eu SCOPE AND PURPOSE OF THIS DOCUMENT This manual gives instruction and guidance for en...

Страница 7: ...ARNING A warning emphasizes information which if disregarded could result in severe injury to personnel or equipment failure CAUTION Emphasizes certain information or instructions which if disregarded...

Страница 8: ...ious edition is identified by a vertical six point black line referred to as a change bar in the outside margin of the page A page change replaces only the previous edition of the affected page Sugges...

Страница 9: ...e 0 0 INTRO Before operating the engine carefully read this Operators Manual This Manual provides you with basic information on the safe operation of the D Motor engine If any sections of the Manual a...

Страница 10: ...re flying solo Flying any type of aircraft involves a certain risk As user or owner of a D Motor engine be informed and prepared for any situation or hazard associated with flying Make sure that you a...

Страница 11: ...Motor Engine Producer D Motor Belgium Construction 4 cylinder boxer motor four stroke side valve Reduction gear Direct drive Cooling fully liquid cooled Control unit ECU 12 V 8A for ECU and fuel pump...

Страница 12: ...uantity 2 5 Litre 4 pints exc hoses etc Oil filter D Motor P N 107001 Oil temperature min 50 C to 100 C 122 to 212 f 80 C to 100 C 176 to 212 f best range Coolant liquid 50 50 deionised water with ant...

Страница 13: ...f performance 70 KWatt 95 HP at 3 000 RPM Maximum continious performance 67 5 KWatt 92 HP at 2 800 RPM Speed Take Off speed 3 000 RPM max 5 min Maximum continious speed 2 800 RPM Idle speed Min 1 000...

Страница 14: ...bient temperature Maximum in flight 60 C 140 F MAP temperature Maximum at start 45 C 113 F ambient temperature Minimum at start 20 C 13 F oil temperature Fuel pressure Maximum 3 0 bar 43psi Minimum 2...

Страница 15: ...ce mapped with Lambda sensing A 300W 25A generator is fully integrated as standard fitment the oil and coolant pumps are directly driven by the camshaft The fuel pressure is held at a constant level w...

Страница 16: ...power supply voltage RMP Lambda probe values Should one of the sensors fail the ECU will automatically revert to a standard or emergency program in this configuration the will motor continue to run b...

Страница 17: ...iciently the motor will continue to run only until the minimum power supply voltage of 8V is reached Installation in the electric system of a sufficiently sized capacitor will ensure continued operati...

Страница 18: ...Belgium EFFECTIVITY page 18 ALL 19 3 2019 Installed dry weight liquids 5kg 58 kg 127lbs battery and liquids not included WARNING DUE TO THE PRECISION OF THE ECU CRANKSHAFT ROTATION MEASUREMENT IT IS...

Страница 19: ...ngine start The LF 26 does not have a choke or hot air intake Thanks to the twin ECU and multipoint fuel injection system the motor may be started at any temperature without any special precaution The...

Страница 20: ...tor runs increase the RPM after a few seconds Switch on the monitoring instruments and check the oil pressure Warm up with about 1200 RPM If the oil pressure is insufficient or in case of an error mes...

Страница 21: ...es the remaining pressure in the fuel system Switch OFF both ignition circuits mag switches then the engine stops Switch OFF the ECU Turn OFF Master Switch For parking maintain this status and remove...

Страница 22: ...e under paragraph 7 5 Range and Fuel Consumption Avoid rapid changes of the power setting except in case of emergency It is better to increase or decrease the power setting slowly and smoothly Signifi...

Страница 23: ...for example if the generator fails and the battery is not fully charged turn off all non essential electrical devices and immediately initiate your landing at the nearest airfield The remaining runni...

Страница 24: ...ber which will damage the engine seriously This is a serious potential problem for both aircraft and crew and a landing of the next airfield is to be initiated immediately Once landing has occurred th...

Страница 25: ...s Some failures are announced or get worse over the time The recognition on time and the analysis of the causes may help to avoid failures of the motor or dangerous situations Loss of Cooling liquid L...

Страница 26: ...header tank is full of coolant level should be just below the sealing surface Check if the sealing surfaces of the header tank and of the cap are clean and without visible damage If not change the da...

Страница 27: ...retting Open the oil reservoir cap and check the level also check if sign of water are visible especially watch out for traces of foam which can be an indication that the oil has some water in it Chec...

Страница 28: ...m only under very special conditions The fuel is sucked out of the fuel tank through the pre filter with the water separator toward the fuel pump After the fuel pump the fuel is pressed through the fi...

Страница 29: ...pump could be the source of these problems Too high fuel pressure is an indication of a damaged regulating valve or a blocked back flow pipe If any of these signs are recognized it is mandatory not to...

Страница 30: ...efore the ECU and the fuel pump require a continuous and trouble free power supply The ECU controls and provides the ignition coils and the injectors with the required electric signals and power Any p...

Страница 31: ...ery If the on board voltage drops lower than 8V the ECU stops working and the engine will stop Should this occur it is essential that all non essential systems that consume electric are turned off The...

Страница 32: ...4 Bolts cylinders to crankcase M8 34 25 Spark plugs M14x1 25 22 16 If torque wrench is not available Tighten as far as possible by hand with spark plug tool and then 90 for new spark plug and 30 for u...

Страница 33: ...The Light Weight Engine Houtekietstraat 11 B 8540 Deerlijk Belgium EFFECTIVITY page 33 ALL 19 3 2019...

Страница 34: ...The Light Weight Engine Houtekietstraat 11 B 8540 Deerlijk Belgium EFFECTIVITY page 34 ALL 19 3 2019 Performance Curve of the LF26 Engine...

Страница 35: ...e oil filter Check all fuel lines for fit fretting general condition safeties leaks and wear Fuel filter Gascolator check clean and re assemble Check the ignition harness for damage and tight connecti...

Страница 36: ...rom connector on engine to all sensors injection tubes ignition coils map and angle sensor s 5 Check battery An engine awaiting overhaul or return to service after overhaul must be given careful atten...

Страница 37: ...ith extremely low temperatures it is recommended to protect the battery against freezing by keeping it in a warm location for storage between flights Cold starting procedures Throttle OFF Limit starte...

Страница 38: ...intake connections Replace any defective parts Engine runs erratic or misfires occasionally Cause Action Spark plug failure Clean plugs inside and outside Replace if necessary Ignition cable break dow...

Страница 39: ...trouble Check all connections Too much oil remaining in the crankcase Check oil return line Fuel supply inadequate less than 2 5 Bar 36 psi Check fuel filter Incorrect fuel grade Refuel with prescrib...

Страница 40: ...ngs worn A major overhaul is necessary Poor oil quality Change oil Use prescribed oil Worn valve guides or bad valve guide seals A top overhaul is necessary External oil system leaky Check for defects...

Страница 41: ...etween overhaul TBO is at present 1500 hours of operation An increase of TBO due to field experience will be published in the Service Bulletins of the manufacturer D Motor Major repairs and major modi...

Страница 42: ...accessories other than GENUINE D Motor spare parts and or accessories are used Personal information Company Address Contact E Mail contact GSM Contact Type of engine LF26 LF39 S N Engine LF S N ECU Ve...

Страница 43: ...Additional Parts pi ces suppl mentaires 1 Oil Sump with without indicator Carter d huile avec sans indicateur P N 107010 107011 1 2 Oil Radiator Radiateur d huile P N 107015 1 3 Copper Sealing rings...

Страница 44: ...1013 14 pcs 1 set 6 Alternator Voltage Regulator Vreg R gulateur de tension d alternateur P N 500101 1 7 Connection Part T shape for ECU temp sensor Pi ce de connexion en forme de T pour capteur de te...

Страница 45: ...85001 1 13 Fuel Filter unit Unit de filtre carburant P N 107201 1 14 Fuel Pressure regulator R gulateur de pression de carburant P N 107202 1 15 Silent Blocks Engine mounting Silent Blocks support mot...

Страница 46: ...1 Please verify if all the add ons parts are shipped with your D Motor Engine Check our system http drop d motor eu if the most updated add on list is enclosed Contact our after Sales Department info...

Страница 47: ...Water Temperature Sensor T Part 107102 1 8 Water temperature Sensor mounted on engine 107101 1 9 Spark plug Cables NGK 106025 8 10 Spark plugs 106021 8 11 Oil Fitting 45 Oil Fitting 90 Oil Fitting 18...

Страница 48: ...The Light Weight Engine Houtekietstraat 11 B 8540 Deerlijk Belgium EFFECTIVITY page 48 ALL 19 3 2019 Blank Page intentional...

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