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Part-No. 905.170.010.000
Edi tion: 01.03.99
© Limbach Flugmotoren GmbH & Co. KG
In stal la tion Ma n u a l
L 1700
L 2000
L 2400 Se ries
Flugmotoren
and
Lim bach Flug mo to ren GmbH & Co. KG
Kot thaus ener Str. 5
53639 Kö nigs win ter
Ger ma ny
Tel.: 02244 / 9201 - 0
Fax: 02244 / 9201 - 30

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Table of Contents
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Summary of Contents for LIMBACH L 2000 Series

  • Page 1 Lim bach Flug mo to ren GmbH & Co. KG Kot thaus ener Str. 5 53639 Kö nigs win ter Ger ma ny Tel.: 02244 / 9201 - 0 Fax: 02244 / 9201 - 30 Edi tion: 01.03.99 © Limbach Flugmotoren GmbH & Co. KG...
  • Page 2: Table Of Contents

    Cylinder Cooling 3.3.1.2.2 Cylinder-Head Cooling 3.3.1.2.3 Oil Cooling 3.3.1.2.4 Technical Data 3.3.1.2.5 Generator Cooling FUEL SYSTEM 4.4.1 Requirements 4.4.1.1 L 2000 Series Engines 4.4.1.1.1 Connection Diagram 4.4.1.1.2 Carburetor System 4.4.1.2 L 2400 EF Engine 4.4.1.2.1 Components 4.4.1.2.2 Description ELECTRICAL SYSTEM 5.5.1 Description 5.5.2...
  • Page 3 Sta tus In di ca tor 5.5.3.4 Fuel Pumps 5.5.3.5 Connections for the Instruments/Panel 5.5.3.6 Ignition System 5-10 5.5.4 Requirements 5-10 5.5.4.1 L 2000 Series Engines 5-10 5.5.4.2 L 2400 EF Engine 5-11 ENGINE MOUNT EXHAUST SYSTEM 7.7.1 General 7.7.2 L 2400 EF PROPELLERS 8.8.1...
  • Page 4 Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series Prepared by: J. B. Meyer Replaces edition from: 10.03.86 Page: 1-1 Checked by: Edition: 01.03.1999 Reg. Number:...
  • Page 5 Applicability This man ual is ap pli ca ble to all en gines of the fol low ing types: LIMBACH L 1700, L 2000, L 2400. The chap ters are di vided up into L 2000 and se ries and L 2400 EF en gine head ings.
  • Page 6: Measurements

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series MEASUREMENTS The di men sions of the dif fer ent en gine se ries are given in the ap pli ca ble in stal la tion draw ings. They also con tain the lo ca tion and size of the en gine in ter faces (all di men sions are given in mil li - me ters).
  • Page 7: Cooling

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series COOLING Description 3.1.1 L 2000 and Series Engines The L 1700, L 2000 and the L 2400 EB se ries en gines are air cooled. For safe op er a tion, a cowl - ing and baf fle sys tem is re quired.
  • Page 8: L 2400 Ef Engine

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series For pusher- and/or fu se lage-installation be hind cock pit it must be en sured that the in lets are not blocked due to unsymmetric flight at ti tude A typ i cal en gine in stal la tion is shown in Fig. 3-1. To ob tain the max i mum cool ing per for mance, the up per ple num must be as large as pos si ble.
  • Page 9 Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series Fig.: 3-2 L 2400 EF Cooling System Layout Prepared by: J. B. Meyer Replaces edition from: 10.03.86 Page: 3-3 Checked by: Edition: 01.03.1999 Reg. Number:...
  • Page 10: Cylinder Cooling

    This elim i nates the need for the cool ing ducting which is to be found in the con ven tional cool ing sys tem. LIMBACH-Flugmotoren do not rec om mend this prac tice. The use of in di vid ual items is rec om mended for safety.
  • Page 11: Oil Cooling

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series The air flow to the ra di a tor must be in de pend ent of the air flow to the cyl in ders, with care ful de - sign it may be pos si ble to use a com mon out let. The size of the ra di a tor is de pend ent on the aero - dy namic con di tions such as air-speed dur ing climb, po si tion of in stal la tion and de sign of the air in let and out let.
  • Page 12: Technical Data

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series 3.1.2.4 Technical Data approx. 0.1 m /min. @3000 Coolant flow (liquid cooling) Max. coolant temperature 110° C Size of radiator approx. 4,5 dm Air-speed ahead of the radiator approx. 40 m/s Max.
  • Page 13: Fuel System

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series FUEL SYSTEM Requirements The fuel sys tem has to be de signed for all types of fuel as given in the op er at ing man ual and there should also be a good chem i cal re sis tance to clean ing ma te ri als. An haz ard ous op er at ing con di - tion may oc cur when fuel tanks are used which are made of com pos ite ma te rial and ob serve the sur face seal ing and also the ad he sion.
  • Page 14: L 2000 Series Engines

    Fuel cock Firewall 4.1.1.2 Carburetor System LIMBACH en gines in gen eral are equipped with con stant de - pres sion car bu re tors. There fore the pres sure of the in take-air must be at the same level as the...
  • Page 15: Components

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series 4-2 and Fig. 4-3). Please note the fuel tray (item 10) which is lo cated be low the car bu re tor to pre vent fuel from drip ping onto hot en gine com po nents.
  • Page 16: L 2400 Ef Engine

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series Fig. 4-4 Fuel System Schematic L 2400 EF 4.1.2 L 2400 EF Engine 4.1.2.1 Components The fuel pipes must be so routed as to avoid heat ing of the fuel. The L 2400 EF en gine has elec - tric fuel pumps which pro vide the re quired in jec tion pres sure and the de liv ery out put is ap prox i - mately 100 l/h.
  • Page 17 Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series 4, 2, 1 and 3, from the in jec tion noz zles to the pres sure sen sor (S1) and then to the pres sure reg u - la tor (R2). The un used fuel flows back into the tanks. The elec tric driven pumps, ar ranged in par - al lel and the sep a ra tor(s) (F3, F4), are to be lo cated at the low est pos si ble po si tion in the fuel sys tem (Fig.
  • Page 18: Electrical System

    E1..E4 (Exc) Bus +12V Fig. 5-1 Sample Wiring Diagram for L 2000 Series Ac cord ing to your in stal la tion, these fig ures may vary con sid er ably. Prepared by: J. B. Meyer Replaces edition from: 10.03.86...
  • Page 19: L 2400 Ef Engine

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series A ground ca ble from the en gine to the bat tery is re quired. It should have at least the same cross sec tion as the starter ca ble and should be at tached to one of the starter mount ing bolts. Warn ing: If the mag neto switch is be set to the “ON”...
  • Page 20 Installation Manual Flugmotoren L 1700, L 2000 and L 2400 Series Fig. 5-2 Block Diagram L 2400 EF Electrical System Prepared by: J. B. Meyer Replaces edition from: 10.03.86 Page: 5-3 Checked by: Edition: 01.03.1999 Reg. Number:...
  • Page 21: Connection Of The Wiring Loom

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series Ac cess thru the firewall is re quired, for the plugs and the flanges X4 and X8 to lay the ECU ca ble loom. The plugs and the flanges X4 and X8 are at tached to the firewall. Each con nec tor needs 4 bolts M4x15 mm, wash ers and nuts.
  • Page 22: Engine Instruments

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series A func tional check of the emer gency bat tery and MCU can be car ried out by: • dis con nect ing the Gen er a tor be fore start ing the en gine •...
  • Page 23: Connection Of Rpm Indicatorwith 9-Pin Connector

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series Cal i bra tion of RPM-indicator (250.215.001.000) Ad just the “0” point first. Then run up en gine to ap prox i - mately 2500 - 3000 rpm, mea sure the pro pel ler rpm with a cal i brated op ti cal ta chom e ter and ad just the “R”...
  • Page 24: Con Nec Tion Of Rpm-Indicator With Gen Er A Tor-Pickup

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series 5.3.3.3 Con nec tion of RPM-Indicator with Gen er a tor-pickup Al ter na tively an RPM-indicator with Gen er a tor-pickup may be used (Fig.: 5-6). Check wether the Gen er a tor has the ap pro pri ate con nec tor “W”...
  • Page 25: Egt, Coolant Tem Per A Ture And Coolant Level Warn Ing Lamp

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series 5.3.3.5 EGT, coolant tem per a ture and coolant level warn ing lamp (250.215.020.000) Destination +12 V +12 V (Light) GND, water temp. sensor - Sensor, water-temperature + Sensor, EGT - Sensor, EGT + Fig.: 5-10 Oil Pressure and Temperature GND,...
  • Page 26: Sta Tus In Di Ca Tor

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series 5.3.3.6 Sta tus In di ca tor (250.215.025.000) Des ti na tion X7/15 (+12 V) X7/1 (Counter) X7/8 (Discharge) X7/7 (Charge) X7/13 (GND) X7/15 (+12 V) Sensor, fuel pressure + Fig.: 5-13 Multi- Status Indicator and Hour Sensor, fuel pressure GND meter...
  • Page 27: Ignition System

    If pos si ble, the in stal la tion area should be in a cool re gion, max i mum am bi ent tem per a ture 80° C. Do not route the ig ni tion leads par al lel to the elec tri cal ca bles. Requirements 5.4.1 L 2000 Series Engines BILL OF MA TE RIALS FOR THE WIRING DI A GRAM Sign De scrip tion Po si tion Part No.
  • Page 28: L 2400 Ef Engine

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series Sign De scrip tion Po si tion Part No. Starter motor attached to the engine Indicator lamp cockpit 170.215.120.000 Indicator, oil cockpit 170.215.100.000 temperature Indicator, oil pressure cockpit 170.215.110.000 Indicator, fuel quantity cockpit selection of the designer Indicator, engine speed...
  • Page 29 Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series Sign De scrip tion Po si tion Part-No. Main circuit breaker cockpit ETA 2-5700-K12-50A (40A) Battery 12V-28Ah airframe / firewall selection of the designer Emergency batt. airframe / firewall selection of the 12V-18Ah designer Starter motor...
  • Page 30 Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series from the sen sors to the ECU are on an in de pend ent cir cuit. The bat tery acts as a ca pac i tor which damp ens the fre quency res o nance. Note The chas sis neg a tive-wiring sys tem is not per mit ted with this de sign.
  • Page 31: Engine Mount

    LIMBACH-Flugmotoren rec om mend the use a tu bu lar struc ture to mount the en gine to the air - frame. The tubes are set at a low an gle of in cli na tion rel a tive to the ad ja cent struc tural mem ber.
  • Page 32: Exhaust System

    Move - ment of the en gine must be taken into ac count. Di men sioned Draw ings are avail able from LIMBACH Flugmotoren un der the fol low ing ref er - ences Dwg.
  • Page 33 Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series Dwg. No. Description 000.173.300.000 Exhaust System Layout (Scheibe SF 25C)) 000.173.400.000 Exhaust System Layout (Sportavia RF5) Clamps (e.g. on the oil fil ter) should be eas ily ac ces si ble for main te nance. Fig.:7-2 Supplementary Silencer Fig.:7-3 Dual Header Exhaust System (Courtesy RSA France) Prepared by: J.
  • Page 34: L 2400 Ef

    More de tailed in for ma tion re gard ing the ex haust sys tem can be ob tained from LIMBACH Flugmotoren. A spoiler at the ex haust out let will avoid catch ing pres sure air, which would de crease the ef fi - ciency of the cool ing sys tem.
  • Page 35: Propellers

    The pitch de pends on the type of air plane and the en gines per for mance. At pres ent, the fol low ing pro pel ler com bi na tions are rec om mended:. L 2000 Series Engines Man u fac turer, Type and Re marks...
  • Page 36: Vibrations

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series VIBRATIONS Ac cord ing to the de sign, the en gine will pro duce vi bra tions which may have an in flu ence on the life of the ad ja cent struc ture. The max i mum ac cel er a tion in res o nance can be as high as 100 m/sec .
  • Page 37: Cowling

    Installation Manual Flugmotoren L 1700, L 2000 and L 2400 Series COWLING De sign in struc tions and ex am ples for the ducting of the air. When de sign ing the air in lets, ducting and the air out lets, the fol low ing points must be con sid - ered: •...
  • Page 38: Engine Breather

    Engine Breather LIMBACH en gines are wet sump forced lu bri cated. There fore it is nec es sary to as sure a proper crank case breath ing. Never give pres sure air to the crank case breather line. Be sure that ic ing is im pos si ble.
  • Page 39: Lit Er A Ture

    Installation Manual Flugmotoren L 1700, L2000 and L 2400 Series Lit er a ture Limbach Flugmotoren Op er ating Man ual L 2400 EF and se ries P/N 250.253.001.000 Limbach Flugmotoren TB 44 Too High En gine Temperatures Bingelis, Tony...

This manual is also suitable for:

L 1700 seriesL 2400 series

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