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LIMBACH L 2000 DA, Operating And Maintenance Manual

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LIMBACH L 2000 DA Operating And Maintenance Manual Download Page 33

 

 

 

Page: 33/48 

Operating Manual L 2000 

Edition: 01.03.2016 

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Remove valve cover. 
 
Valve clearance check. 

Turn propeller according to engine rotation until the valves of the second cylinder are 
overlapping. Now, the valve clearance of the first cylinder may be checked (see cylinder 
designation at page 3.2). 
 
Move thickness gauge between valve shaft and setscrew. The thickness gauge must be 
movable slightly "sucking". It must not jam. 
 

Valve clearance setting. 

Untighten nut of setscrew and turn setscrew until thickness gauge can be moved 
slightly "sucking". Tighten nut and check valve clearance again, readjust, if necessary. 

 
Order of adjustment 

The order of adjustment is: 1 - 3 - 2 - 4, i.e. the propeller has to be turned by 180° after 
the first cylinder has been set, in order to check the valve clearance of the third cylinder. 
After another 180° turn according to the engine rotation, the valve clearance of the 
second cylinder may be checked, etc. 

 
Valve clearance: 

Intake Valve 

0.20 mm 

 

 

 

Exhaust Valve  0.20 mm 

 
Check cylinder head cover gaskets and replace, if necessary. 
 

8.13  Check of Valve Shaft Projecting Length   

 
Remove cylinder head covers. 
 
Dismount rocker arm shafts. 
 
Measurement of valve shaft projecting length by means of measuring device P/N: 803.001.130. 

If the projecting length is less than 24 mm for the intake and exhaust valve the cylinder 
heads have to be replaced by new ones. 
 

 

Caution: 
If the measurement is within limits, however the valve measured is less than 
24.5 mm, the projecting length of the valve shafts has to be checked every 100 
hours.

 

 
Install rocker arm shafts. 

 

 

Apply sealant P/N: 708.413.004 to the sealing face of the bearing blocks. 

 

Position rocker shafts on the studs. 

 

Insert push rods into the cavities of the rocker arms. 

 

Pre-assemble spring washers and M8 nuts (strength class 10). 

 

Ensure that the pushrods are also seated in the camshaft followers. 

 

Torque nuts to 25 Nm 

 
 

Note: 

Turning the pushrods while tightening the bolts will prevent the pushrods from becoming 
unseated at the cam followers. 

 
 

 

Caution: 
An unseated pushrod may cause power loss and/or subsequent 
engine damage. 

 
 

 

Summary of Contents for L 2000 DA

Page 1: ... approved develop ment organization No EASA 21J 270 Approval and translation has been done by best knowledge and judgement In any case the original text P N 201 253 900 000 in german language is authoritative Limbach Flugmotoren GmbH Co KG Kotthausener Str 5 D 53639 Königswinter Germany Tel 49 2244 9201 0 Fax 49 2244 9201 30 www limflug de Limbach Flugmotoren GmbH Co KG 201 253 905 000 ...

Page 2: ... Daily Check 25 7 2 Periodical Checks 25 7 2 1 Every 6 Months Following 100 h Inspection 25 7 2 2 Every 2 Years after the last Overhaul 25 7 2 3 Every 5 Years after New or Main Overhaul 25 7 3 Operating Time related Inspections 26 7 3 1 After the first 5 Operating hours 26 7 3 2 After the first 25 Operating hours 26 7 3 3 Every 25 Operating hours 26 7 3 4 Every 50 Operating hours 26 7 3 5 Every 10...

Page 3: ... 21 1 Compliance 37 8 22 Operation at low ambient Temperatures 38 8 23 Operation in Tropical Conditions 39 8 24 Miscellaneous 39 9 Overhaul 40 9 1 Major Overhaul 40 9 2 Major Repair 40 10 Lubricants Coolants Fuels 41 10 1 List of Lubricants 41 10 2 Fuels 42 11 Recommended Tightening Torques 43 12 Trouble Shooting 44 12 1 Engine Starting Trouble 44 12 2 Engine Operating Trouble 45 12 2 1 Fuel Suppl...

Page 4: ...This Edition replaces the Operating and Maintenance Manual from 07 92 This manual has 48 pages and is issued per 01 03 2016 This edition replaces Date Description 07 92 New edition 01 03 2016 Replaces edition from 07 92 1 2 Release Relased and approved on 01 03 2016 Dipl Ing P Stolinski ...

Page 5: ...ecially identifies safety notes must be observed to prevent accidents with personal injuries and to prevent damage to the engine Please also observe the instructions of the aircraft manufacturer They are specially adapted for opera tion of the engine in the aircraft Caution Familiarize yourself with the layout of the engine controls in your aircraft according to the instructions of the aircraft ma...

Page 6: ... 1 Model Designation L 2000 E A 1 X X 1 2 3 4 5 6 7 1 LIMBACH Manufacturer 2 Displacement Class in cm3 3 E Single Ignition D Dual Ignition 4 Equipment Basic Type of Construction 0 Tractor Propeller Carburetor rear bottom Alternator rear Starter rear A Tractor Propeller Carburetor rear top Generator front Starter front B Tractor Propeller 2 Carburetors rear top Generator rear Starter rear C Pusher ...

Page 7: ...able Pitch Propeller 2 Flange for Fixed Pitch Propeller 6 7 Installation Type Differences with regard to installation related changes X Experimental Engine without Certification AA Variant for powered glider GROB G 109 AB Variant for powered glider VALENTIN TAIFUN AC Variant for powered glider HOFFMANN H 36 DIMONA ...

Page 8: ...8 Operating Manual L 2000 Edition 01 03 2016 201 253 905 000 3 2 Cylinder Designation I front propeller side II right III rear accessory mounting side IV left 1 cylinder 1 2 cylinder 2 3 cylinder 3 4 cylinder 4 ...

Page 9: ...igh Temperature Harness LIMBACH P N 170 123 022 unshielded LIMBACH P N 170 123 020 shielded Carburetor STROMBERG ZENITH 150 CD 3 Fuel Pump APG LIMBACH LIMBACH P N 170 090 013 Alternator DUCELLIER 14V 28A P N 170 113 001 BOSCH 14V 33A P N 201 113 005 BOSCH 14V 55A BOSCH 28V 35A MOTOROLA 14V 40A Starter FIAT 0 7kW BOSCH 1 4kW MAGNETON 1kW P N 250 143 010 Oil Pump Geared Pump Oil Filter Oil Screen Pr...

Page 10: ...s and Temperatures Fuel Pressure 0 1 to 0 15 bar 1 45 to 2 17 psi Engine Oil Pressure max 4 bar 58 psi Engine Oil Pressure min 1 bar 14 5 psi 2500 RPM Engine Oil Temperature max 120 C Engine Oil Temperature min 50 C indicated Engine Oil Temperature opt appr 80 C Cylinder Head Temperature max 250 C Cylinder Head Temperature opt 150 to 170 C at cruise Oil Charge Engine Oil Charge max 2 5 l Engine Oi...

Page 11: ...ion Harness SLICK High Temperature Harness LIMBACH P N 170 123 022 unshielded LIMBACH P N 170 123 020 shielded Carburetor STROMBERG ZENITH 150 CD 3 Fuel Pump APG LIMBACH LIMBACH P N 170 090 014 Alternator DUCELLIER 14V 28A P N 170 113 005 Starter BOSCH 0 4kW BOSCH 1 4kW SJCE 0 4kW SJCE 0 9kW MAGNETON 1kW P N 202 143 030 Oil Pump Geared Pump Oil Filter Oil Screen Propeller Flange for EA1 202 031 30...

Page 12: ...ressures and Temperatures Fuel Pressure 0 1 to 0 15 bar 1 45 to 2 17 psi Engine Oil Pressure max 4 bar 58 psi Engine Oil Pressure min 1 bar 14 5 psi 2500 RPM Engine Oil Temperature max 120 C Engine Oil Temperature min 50 C indicated Engine Oil Temperature opt appr 80 C Cylinder Head Temperature max 250 C Cylinder Head Temperature opt 150 to 170 C at cruise Oil Charge Engine Oil Charge max 2 5 l En...

Page 13: ...rness SLICK High Temperature Harness LIMBACH P N 170 123 022 unshielded LIMBACH P N 170 123 020 shielded Carburetor 2 x STROMBERG ZENITH 150 CD 3 Fuel Pump APG LIMBACH LIMBACH P N 170 090 013 Alternator DUCELLIER 14V 28A P N 170 113 001 BOSCH 14V 33A P N 201 113 005 Starter FIAT 0 7kW BOSCH 1 4kW MAGNETON 1kW P N 250 143 010 Oil Pump Geared Pump Oil Filter Oil Screen Propeller Flange for EB1 201 0...

Page 14: ...ressures and Temperatures Fuel Pressure 0 1 to 0 15 bar 1 45 to 2 17 psi Engine Oil Pressure max 4 bar 58 psi Engine Oil Pressure min 1 bar 14 5 psi 2500 RPM Engine Oil Temperature max 120 C Engine Oil Temperature min 50 C indicated Engine Oil Temperature opt appr 80 C Cylinder Head Temperature max 250 C Cylinder Head Temperature opt 150 to 170 C at cruise Oil Charge Engine Oil Charge max 2 5 l En...

Page 15: ...a of the LIMBACH L 2000 EC model are identical to the technical data of the LIMBACH L 2000 E0 model C indicates the changes concerning the axial bearing for rear engine installation pusher propellers Due to the rear installation pusher the propeller shaft rotation is changed to clockwise in direction of flight ...

Page 16: ...120 110 Spark Plugs EYQUEM A 755 L LIMBACH LB L41 0 LIMBACH LB L 2 P N 205 123 103 Ignition Harness SLICK High Temperature Harness LIMBACH P N 205 123 012 LIMBACH P N 205 123 022 Carburetor STROMBERG ZENITH 150 CD 3 Fuel Pump APG LIMBACH LIMBACH P N 170 090 014 Alternator DUCELLIER 14V 28A P N 170 113 005 Starter BOSCH 0 4kW BOSCH 0 7kW P N 171 143 005 SJCE 0 4kW SJCE 0 9kW Oil Pump Geared Pump Oi...

Page 17: ...ressures and Temperatures Fuel Pressure 0 1 to 0 15 bar 1 45 to 2 17 psi Engine Oil Pressure max 4 bar 58 psi Engine Oil Pressure min 1 bar 14 5 psi 2500 RPM Engine Oil Temperature max 120 C Engine Oil Temperature min 50 C indicated Engine Oil Temperature opt appr 80 C Cylinder Head Temperature max 250 C Cylinder Head Temperature opt 150 to 170 C at cruise Oil Charge Engine Oil Charge max 2 5 l En...

Page 18: ...Page 18 48 Operating Manual L 2000 Edition 01 03 2016 201 253 905 000 5 Performance 5 1 Performance Graph LIMBACH L 2000 E0 and L 2000 EC ...

Page 19: ...Page 19 48 Operating Manual L 2000 Edition 01 03 2016 201 253 905 000 5 2 Performance Graph LIMBACH L 2000 EA ...

Page 20: ...Page 20 48 Operating Manual L 2000 Edition 01 03 2016 201 253 905 000 5 3 Performance Graph LIMBACH L 2000 EB ...

Page 21: ...Page 21 48 Operating Manual L 2000 Edition 01 03 2016 201 253 905 000 5 4 Performance Graph LIMBACH L 2000DA ...

Page 22: ...y hand several times Check function of impulse coupling of magneto s and for abnormal sound and rough movement of the engine Reassemble spark plug connectors Note Engines that are equipped with a vacuum pump may never be turned against the normal sense of engine rotation Damage to the vacuum pump may occur Caution Turning the propeller by hand may only be performed with the spark plugs uncon necte...

Page 23: ... aircraft manufacturer Return throttle lever to idle 6 3 2 Check carburetor heating for proper functioning Refer to the flight and maintenance manual of the aircraft manufacturer Caution If full throttle ground runs are made for a longer period overheating of the engine is possible 6 4 Hot Engine Start Up Hot engine starting is performed as described in Chapter 6 2 but with choke closed After star...

Page 24: ...do not activate cold start device If the engine is cold perfom warm up At low ambient temperatures and after prolonged soarings the engine oil may have cooled so much that the engine cannot be started anymore the capacity of the starting battery may be reduced see section 8 22 Caution Make sure that you have sufficient altitude to restart the engine especially at low ambient temperatures and prolo...

Page 25: ...ment Check clearance of throttle pushrods and bowden cables Check engine oil level and refill as necessary Volume difference between max and min markings 1 l Check oil and fuel system for leakage Perform test run see section 8 20 7 2 Periodical Checks 7 2 1 Every 6 Months Following 100 h Inspection Check carburetor diaphragm of the Stromberg Zenith carburetor for brittleness strain or cracks and r...

Page 26: ...7 3 3 Every 25 Operating hours Grease magneto couplings Applicable to all engines except L 2000 EA DA 7 3 4 Every 50 Operating hours Check fuel and lubrication system Clean engine Check crankcase ventilation Clean induction air filter or replace if necessary Change engine oil clean oil screen Check valve clearance replace cylinder head cover gasket as necessary Check compression Clean and check sp...

Page 27: ... 3 4 7 3 6 Every 250 Operating hours Disassemble and check magneto s and replace as necessary SLICK Magnetos only Work as specified in section 7 3 4 7 3 7 Every 500 Operating hours Disassemble and check magneto s and replace as necessary BENDIX Magnetos only Replace float valve Check play of throttle shaft L 2000 EB only Check valve shaft projecting length Work as specified in section 7 3 4 Work a...

Page 28: ...nstalled in different positions During assembly pay attention to markings provided by the manufacturer e g magneto timing markings The ignition harness is marked by the manufacturer The coupling nuts are bearing letters and numbers The letter T refers to upper the letter B to lower spark plugs dual ignition only The figure behind the letter is representing the cylinder number In addition the distr...

Page 29: ...iaphragm Unscrew and demount piston damper Dismounting of carburetor diaphragm Remove carburetor cover Take out compression spring and diaphragm with piston Check of carburetor diaphragm Check carburetor diaphragm for cracks and extensions and replace if necessary Replacement of carburetor diaphragm Remove mounting bolts from piston and demount diaphragm with clamping ring Attach new diaphragm to ...

Page 30: ...verfilling of the piston guide is not dangerous excess oil will be fed to the combustion process of the engine Install piston damper 8 7 Fuel Pump Screen cleaning 8 7 1 Engines with APG Fuel Pump Close fuel shutoff valve Removal of screen Unscrew mounting bolt of the pump cover Demount cover and screen with sealing Cleaning of screen Wash the screen by means of gasoline used for cleaning purposes ...

Page 31: ...ws Collect any fuel dripping from the pump Disassemble valve assy from top of fuel pump with a suitable tool Remove o ring and strainer from top of pump Clean housing Insert strainer and new o ring Insert valve assy until flush with the flange of the cover Rotate crankshaft until the diaphragm of the fuel pump is in the lowest position The plate of the diaphragm 1 is flush with the fuel pump housi...

Page 32: ...heck suitability and installation of breather line it has to be stable at engine operating temperatures danger of buckling and must be installed properly no bucklings no reduction in cross sectional area no suction effects at the end of the line 8 11 Compression Check Compression checks should be performed when the engine is warm to touch Remove spark plugs Measure compression by means of a compre...

Page 33: ...e clearance Intake Valve 0 20 mm Exhaust Valve 0 20 mm Check cylinder head cover gaskets and replace if necessary 8 13 Check of Valve Shaft Projecting Length Remove cylinder head covers Dismount rocker arm shafts Measurement of valve shaft projecting length by means of measuring device P N 803 001 130 If the projecting length is less than 24 mm for the intake and exhaust valve the cylinder heads h...

Page 34: ...rush for cleaning Do not sandblast spark plugs Check electrode gap and adjust if necessary not for spark plug LB N41 0 and LB L41 0 Check electrode gap with a nozzle gauge and correct by bending the ground electrode s The electrode gap is 0 4 to 0 5 mm Install spark plugs reattach spark plug connectors Grease spark plug thread with graphite grease P N 170 210 010 Torque 25 Nm Caution Electrodes mu...

Page 35: ...rong thumb load by 5 to 10 mm Stretching of drive belt Unfasten mounting bolt of clamp at the crankcase or accessory housing Unfasten mounting nut of alternator with locking at the clamp Stretch drive belt by moving the alternator Tighten and lock all bolts and nuts Replacement of drive belt Front mounted alternator Mark position of propeller relative to starter ring gear and remove propeller Unfa...

Page 36: ... belt to crankshaft belt pulley and install magneto Attach drive belt to alternator belt pulley and stretch drive belt Tighten all mounting bolts Check ignition timing New drive belts are stretching more during the first time of operation A check is required after 10 operating hours Set belt tension as necessary 8 16 Exhaust System Check Check for damages leaks and condition Refer to flight and ma...

Page 37: ...nance manual of aircraft manufacturer Set variable pitch propellers to Take off pitch 8 21 Engine Preservation Engines that are take out of operation for more than 6 months shall be preserved Note At high humidity it is recommended to close the exhaust muffler exit 8 21 1 Compliance Installed engine Warm up engine and drain engine oil after engine shut down Clean oil screen Clean engine thoroughly...

Page 38: ...there is no carburetor preheat installed we strongly recommened retrofitting one Pleas contact your aircraft manufacturer for information Electrical system At low ambient temperatures the capacity of the starting battery is reduced This may lead to starting problems Check all wiring connections in the ignition system and clean as necessary oxidized terminals cause voltage drops and thus starting p...

Page 39: ...tight fit of the oil stick in its guiding tube bend stick as necessary Dust protection of engines out of operation Close exhaust pipe crankcase ventilation and induction air filter with a dustproof sealing Corrosion protection of engines out of operation The different actions are described in section 8 21 Maintenance hints Air filter Check daily and clean or replace as necessary Drive belt Check d...

Page 40: ...st be performed only by the manufacturer or licensed fixed base operators authorized by the manufacturer After ground or obstacle contact of the propeller the engine has to be disassembled in any case and the crankshaft has to be checked outside the engine Eccentricity measurement of crankshaft or propeller flange at installed conditions is inaccurate and not acceptable If ground or obstacle conta...

Page 41: ...eg API SH SI SJ S as well as one of Volkswagen specs VW 500 00 VW 501 01 or VW 502 00 As the temperature ranges of adjacent SAE classes are overlapping there is no need to change the oil for short time temperature variations If low viscosity oils are used the oil pressure may go below the lower limit at continuously high engine speeds and high loads Such operating conditions should be avoided Lubr...

Page 42: ...only Storage time for fuel is limited If stored too long in ventilated con tainers volatile components of the fuel may evaporate That can change the properties of the fuel reduced octane number Also the fuel properties depend on the calendar season Use of fuel additives is not permitted Mixing of leaded and unleaded fuels is not recommended Use mixed fuel only in case of need Caution Use of other ...

Page 43: ...owl to carburetor 2 Nm Float valve to carburetor 12 Nm Diaphragm to regulator piston 1 Nm Crankcase ventilation to case 20 Nm Spark plug to cylinder head 25 Nm Ignition harness to spark plug 10 Nm Nut of valve clearance setscrew 15 Nm Cover to fuel pump 2 Nm Clamp to alternator M6 8 Nm Clamp to alternator M8 20 Nm Clamp to case 20 Nm Alternator to case 45 Nm Magneto to housing 20 Nm Exhaust flange...

Page 44: ...bly insufficient contact Clean connectors Connect or replace ground wire Starter motor defective Repair or replace starter motor Starter relay defective Replace starter relay Insufficient compression no valve clearance leaky valves engine overheated Adjust valve clearance repair cylinder head tighten cylinder heads according to specification Investigate and remove cause of overheat Engine defectiv...

Page 45: ...e choke and check as necessary 12 2 Engine Operating Trouble The following phenomena are considered to be engine operating trouble uneven and irregular engine run temporary interruptions low power engine overheat rough engine run Consider reasons as per section 12 1 besides the ones listed below 12 2 1 Fuel Supply Possible Cause Remedy Insufficient fuel flow Fuel ventilation lokked lines blocked o...

Page 46: ...efective worn out Repair or replace choke Wrong mixture setting Check setting and operation of carburetor and correct as necessary Carburetor icing Operate carburetor heating system Induction air filter badly contaminated or blocked Clean or replace air filter Induction system leakage Seal or replace induction system Wrong fuel Refill fuel tank with specified fuel 12 2 2 Ignition Possible Cause Re...

Page 47: ...use Remedy Bad engine oil quality Change oil Use specified oil Oil screen blocked Remove and clean oil screen check condition and replace if necessary Oil temperature sensor or indicator defective Check temperature sensor and indicator and replace as necessary Lack of oil in the oil sump Check oil level and refill oil as necessary Note If the engine was accidently operated with out engine oil afte...

Page 48: ... to be in compatible with the fuel thus causing the tank material to dissolve In such cases the complete fuel system must be cleaned or even be re placed Strong accumulation of deposit in the combustion chamber Demount cylinder heads remove deposits Propeller unbalance Balance propeller Check propeller blade track Engine suspension defective Replace engine suspension Excessive gas leakage at the p...

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