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Summary of Contents for Lombardini 3LD450
- Page 1 WORKSHOP MANUAL Engine Series 3 - 4 LD...
- Page 2 • LOMBARDINI srl reserves the right to make, at any time, changes in the engines for technical or commercial reasons. • These changes do not require LOMBARDINI srl to intervene on the marketed production up to that time and not to consider this manual as inappropriate.
- Page 3 The information contained within this service manual is the sole property of Lombardini. As such, no reproduction or replication in whole or part is allowed without the express written permission of Lombardini. Information presented within this manual assumes the following the person or persons performing service work on Lombardini series engines: 1 - is properly trained and equipped to safely and professionally perform the subject operation;...
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Page 4: Table Of Contents
INDEX This handbook provides the main information concerning the repair of the following LOMBARDINI Diesel engines 3LD 450, 3LD 510, 3LD 451/S, 3LD 510/S, 4LD 640, 4LD 705, 4LD 820, which are air-cooled, provided with direct injection and revised on the 15-06-2014. - Page 5 Index Valve guide dimensions and clearances ......................... 20 Valve guides insertion ..............................20 Valve housings and seats ............................... 21 Valve seat grinding ................................21 Valve/rocker arm clearance .............................. 19 Valves ....................................19 Valves guides and housings ............................. 20 Vent plug ..................................17 LUBRICATION CIRCUIT ............................
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Page 6: General Remarks And Safety Information
The internal combustion process generates carbon monoxide, an odourless and highly toxic gas, so . Lombardini engines are built to provide safe and spending too long a time in an environment where the engine longlasting performances, but in order to obtain these... -
Page 7: California Proposition 65
. In order to move the engine simultaneously use the eyebolts the engine and/or removal of the rotary guards, disconnect fitted for this purpose by Lombardini. These lifting points are and insulate the positive cable of the battery so as to... -
Page 8: General Safety During Operating Phases
General remarks and safety information GENERAL SAFETY DURING OPERATING PHASES – The procedures contained in this manual have been tested and selected by the manufacturer’s technical experts, and hence are to be recognised as authorised operating methods. – A number of procedures must be carried out with the aid of equipment and tools that simplify and improve the timing of operations. - Page 9 - 9 - Workshop Manual_3 - 4 LD_cod. ED0053025560_4° ed_ rev. 03...
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Page 10: Technical Information
TECHNICAL INFORMATION MANUFACTURER AND MOTOR IDENTIFICATION DATA - 10 - Workshop Manual__3 - 4 LD_cod. ED0053025560_4° ed_ rev. 03... -
Page 11: Technical Data
Technical information 3LD450 3LD510 Cm³ 18,1:1 18,1:1 3000 3000 28,5 32,8 @ 1700 @ 1800 Kg/h 0.007 0.008 l./1' l./1' 9000 9000 35° 35° α 30° 30° α **** **** 4LD640 4LD705 4LD820 Cm³ 17,0:1 17,0:1 17,0:1 3000 3000 3000... -
Page 12: Performance Diagrams
C (NB): Specific fuel consumption at NB power : Torque at N power : Continuous service field of use. For any purpose out of this field of use, please contact company LOMBARDINI. - 12 - Workshop Manual__3 - 4 LD_cod. ED0053025560_4° ed_ rev. 03... -
Page 13: Possible Causes And Trouble Shooting
Technical information POSSIBLE CAUSES AND TROUBLE SHOOTING THE ENGINE MUST BE STOPPED IMMEDIATELY WHEN: 1) - The engine rpms suddenly increase and decrease 2) - A sudden and unusual noise is heard 3) - The colour of the exhaust fumes suddenly darkens 4) - The oil pressure indicator light turns on while running. -
Page 14: Capacities In Litres - Air Filter Oil Bowl
3LD450, 3LD510, 3LD450/S, 3LD510/S =1.75 4LD640, 4LD705, 4LD 820 = 2.60 Air filter oil bowl = 0.3 For special filters, tanks and oil sumps, please follow LOMBARDINI instructions. - 14 - Workshop Manual__3 - 4 LD_cod. ED0053025560_4° ed_ rev. 03... -
Page 15: Lubricant - Acea-Regulations Sequences
Technical information LUBRICANT SAE Classification In the SAE classification, oils differ on the basis of their viscosity, and no other qualitative characteristic is taken into account. SAE 10W-30** The first number refers to the viscosity when the engine SAE 10W-40** is cold (symbol W = winter), while the second considers SAE 10W-60** viscosity with the engine at régime. -
Page 16: Disassembly / Reassembly
Fill with engine oil filter to the indicated level. While reassembling, tighten the nuts at 25 Nm (3LD450, 3LD510, 3LD450/S, 3LD 510/S), at 30 Nm (4LD 640, 4LD 705, 4LD 820) Details:... -
Page 17: Flywheel
Disassembly / Reassembly Flywheel Clockwise unscrew nut 1 and remove the flywheel using the puller 2 Part. no. 7271-3595-050 for 3LD 450, 3LD 451/S, 3LD510, 3LD510/S, while for 4LD 640, 4 LD 705, 4LD 820 use puller with Part. no. 7271-3595-048. Check that the starter ring gear, when it is present, and the co- nic surface of the driving shaft coupling hole are intact. -
Page 18: Decompression (By Request)
Disassembly / Reassembly Valve/rocker arm clearance Place the piston at the compression top dead centre. Place thickness gauge 1 between the valve stem and the rocker arm; cold-adjust the clearance at 0.15 ÷0.20 mm for both valves. Tighten the rocker arm box cap at 20 Nm. Decompression (by request) Components: 1 Cover... -
Page 19: Head
Disassembly / Reassembly Rocker arm pin and hole Dimensions (mm) A = 15.032 ÷ 15.050 B = 14.989 ÷ 15.000 Clearances (A-B) = 0.032 ÷ 0.061 (A-B) = worn limit = 0.120 Head Do not disassemble while it is hot as to avoid any possible distortion. -
Page 20: Valve Guide Dimensions And Clearances
Disassembly / Reassembly Valves guides and housings 1 Exhaust valve guide 2 Intake valve guide Dimensions (mm): 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S A = 43.80 ÷ 44.20 B = 55.80 ÷ 56.20 C = 11.00 ÷ 11.018 D = 11.05 ÷... -
Page 21: Valve Housings And Seats
Disassembly / Reassembly Valve housings and seats 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S (mm); A = 34.99 ÷ 35.01 C = 30.99 ÷ 31.01 B = 35.10 ÷ 35.12 D = 31.10 ÷ 31.12 4LD 640, 4LD 705, 4LD 820 (mm): A = 42.99 ÷... -
Page 22: Cylinder And Piston
Disassembly / Reassembly Cylinder and piston Set a bore gauge to zero with a calibrated ring. Check the dia. Ø at points A and B at three different heights, see pictures 23 and In case of wear exceeding 0.06 mm to the maximum value prescribed, grind the cylinder at the subsequent increased value. -
Page 23: Clearance Volume
Disassembly / Reassembly Piston ring assembly order 3LD 450, 3LD 450/S, 3LD 510, 3LD 510/S, picture 30 A = slot for first piston ring (chromium plated) B = slot for piston ring segment (torsional) C = slot for third piston ring (oil scraper ring) 4LD 640, 4LD 705, 4LD 820, picture 31 A = slot for first piston ring (chromium plated) B = slot for second piston ring (torsional) -
Page 24: Connecting Rod Equipped With Bearings And Piston Pin
Disassembly / Reassembly Connecting rod equipped with bearings and piston pin For 3LD 450, 3LD 450/S, 3LD 510, 3LD 510/S Dimensions (mm) A = 144.05 ÷ 145.05 B = 23.02 ÷ 23.03 (with driven and machined bearing) C = 42.028 ÷ 42.052 (with bearing tightening at 3 Nm) D = 22.995 ÷... -
Page 25: Camshaft Axial Clearance
Disassembly / Reassembly Side distributor port It can be found in engines equipped with industrial type drive shaft. The gaskets 3 and 5, thanks to their thickness, assure the oil seal and affect the camshaft axial clearance, as well. For the check, see information hereunder. Components For 3LD 450, 3LD 510 picture 40 1 Port... -
Page 26: Drive Shaft
Disassembly / Reassembly Drive shaft There are two types of standard drive shafts: A Automotive type (agricultural machines) B industrial type (motor pumps generating set, etc.) Note: For left-handed engines, i.e 3LD 510/S, the drive shaft turns anticlockwise (seen from the flywheel position) and their thread is clockwise on the power takeoff side as well as on the flywheel side. -
Page 27: Camshaft
Disassembly / Reassembly Drive shaft internal diam. crankshaft bearing / connecting rod head and clearances regarding their respective pins (mm) 3LD 450, 3LD 510, 3LD 451/S, 3LD 510/S E = 40.040 ÷ 40.050 F = 42.028 ÷ 42.052 G = 42.04 ÷ 42.05 H = 30.07 ÷... -
Page 28: Camshaft Intake And Exhaust Cam Height
Disassembly / Reassembly Camshaft pin and housing dimensions (mm) A = 18.000 ÷ 18.018 (housing on the base) B = 17.945 ÷ 17.975 C = 18.000 ÷ 18.018 (housing on the port) D = 17.945 ÷ 17.975 A-B and C-D = 0.025 ÷ 0.073 Worn limit = 0.13 Camshaft intake and exhaust cam height. -
Page 29: Speed Governor
Disassembly / Reassembly Speed governor It has a centrifugal system with 6 balls housed in the gear, which is directly operated by the drive shaft. The balls, moved at the gear periphery by a centrifugal force, axially shift the bell 3, which actuates the fork 2 connected to lever 1 in order to determine the injection pump rack rod position. -
Page 30: Lubrication Circuit
LUBRICATION CIRCUIT Danger – Attention The engine can be damaged if allowed to operate with insufficient oil. It is also dangerous to add too much oil because its combustion may lead to a sharp increase in the rotation speed. Use suitable oil in order to protect the engine. Nothing more than lubrication oil can influence the performances and life of an engine. -
Page 31: Oil Filter Cartridge
Lubrication circuit Oil pump Make sure that the gear teeth are intact and check that the clearance between the gear periphery and the pump case does not exceed 0.15 mm and that the drive shaft can easily turn with an axial clearance not exceeding 0.15 mm. Check that the gear lubrication holes 1 and 2 are not clogged. -
Page 32: Oil Pressure Check
Lubrication circuit Oil pressure check After the assembly operation, fill the engine with oil and fuel; connect a 10 bars pressure gauge to the fitting on the oil filter. Start the engine and check the pressure reaction according to oil temperature. -
Page 33: Fuel Injection Circuit
FUEL INJECTION CIRCUIT Standard feeding/injection circuit Components: 1 Tank 2 Filter 3 Pump 4 Pipe 5 Injector 6 Injector waste pipe Fuel filter inside the tank (standard) Details: 1 Spring 6 Gasket 2 Disk 7 Cover 3 Ring 8 Ring 4 Cartridge 9 Bolt 5 Gasket... -
Page 34: Advanced Injection (Static)
Fuel injection circuit Injection pump Components: 1 Delivery fitting 11 Spring 2 O-ring 12 Pumping piston 3 Spring 13 Tappet case 4 Delivery valve 14 External roller 5 Gasket 15 Internal roller 6 Barrel 16 Pin 7 Pump case 17 Lock ring 8 Eccentric 18 Rack rod 9 Sector gear... -
Page 35: Advanced Injection References On The Conveyor And Flywheel Protection Disk
Fuel injection circuit Advanced Injection references on the conveyor and flywheel protection disk A Piston reference at top dead centre B Injection advance reference as to A A ÷ B Distance in mm C Reference of piston in injection advance position α... -
Page 36: Electric Circuit
6 Oil pressure lamp 7 Ignition switch 8 Battery recharge lamp Note: The batteries, which are not supplied by Lombardini, shall have a 12 V voltage and the following capacity: 3LD 450, 3lD 451/S, 3LD 510, 3LD 510/S = 45 Ah... -
Page 37: Bosch Dw (L) 12 V 1, 1 Kw Type, Starting Motor
Electric circuit Voltage regulator There are two different types of regulators: one with make SAPRISA, ALTECNA, NICSA and the other with make DUCATI. ALTECNA Tab dimensions Cable SAPRISA DUCATI Colours Width Thickness NICSA giallo 6,25 rosso 9,50 rosso 9,50 verde 4,75 marrone 6,25... -
Page 38: Bosch Jf(L) 12V 2.5 Kw Type, Starting Motor
Electric circuit Characteristic curves for Bosch DW(L) 12V 1.1 kW type, starting motor Bosch JF(L) 12V 2.5 kW type, starting motor For 4LD 640, 4LD 705, 4LD 820 Anticlockwise rotation (seen from the pinion side) A = 23 ÷ 25 mm Characteristic curves for Bosch JF(L) 12V 2,5 kW type starting motor... -
Page 39: Adjustment
ADJUSTMENT Minimum rpm adjustment at idle running (standard) After filling the engine with oil and fuel, start and warm up the engine for 10 minutes. Actuating the adjusting screw 1, set the idling at 1150 rpm; then fasten the lock nut. Peak rpm adjustment at idle (standard) After adjusting the minimum rpm, set the screw 2 and adjust the peak rpm at 3200 rpm at idle;... -
Page 40: Adjustment Of Injection Pump Delivery With Braked Engine
Adjustment Limiting device for injection pump delivery and torque gearing device It is housed in the pump control lever A and it is constituted of a spring on cam B, limiting the stroke of the same lever A. At the torque rate, the spring flexure, subject to the accelerator control action, allows a further stroke of lever A, thus an increased delivery of the injection pump. -
Page 41: Storage
STORAGE - If the engine is not to be used for extensive periods, check the storage area conditions and the type of packaging and make sure that these are suitable for correct storage. If necessary, cover the engine with a proper protective sheet. -
Page 42: Main Torque Specifications And Use Of Sealants
MAIN TORQUE SPECIFICATIONS AND USE OF SEALANTS 3LD 450 - 3LD 510 - 3LD 450/S - 3LD 510/S MAIN DRIVING TORQUES REFERENCE Dia. /Pitch Torque POSITION ( Picture NO. ) ( mm ) ( Nm ) Injection pump union 18x1.5 8x1.25 Connecting rod Clutch bearing bell bolt... -
Page 43: Table Of Tightening Torques For Standard Screws (Fine Thread)
Main torque specifications and use of sealants Table of tightening torques for standard screws (coarse thread) Resistance class (R) 10.9 12.9 Quality/ Dimensions R>400N/mm R>500N/mm R>600N/mm R>800N/mm R>1000N/mm R>1200N/mm Diameter 1000 1200 1050 1500 1800 1088 1450 2000 2400 Table of tightening torques for standard screws (fine thread) Resistance class (R) 10.9 12.9... -
Page 44: Use Sealant
Main torque specifications and use of sealants USE OF DOPE FOR 3LD 450 - 3LD 510 - 3LD 451/S - 3LD 510/S TYPE OF SEALANT POSITION Clutch bearing bell and embedded hexagonal-head screws LOCTITE 270 Control pin threading LOCTITE 270 Coupling nipple for oil filter cartridge LOCTITE 270 Stud bolt for clamping on engine head... - Page 45 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................- 45 - Workshop Manual_3 - 4 LD_cod.
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- Page 48 WORKSHOP MANUAL cod. __ ED0053025560 La Lombardini si riserva il diritto di modificare in qualunque momento i dati contenuti in questa pubblicazione. Lombardini se rèserve le droit de modifier, à n'importe quel moment, les données reportées dans cette publication. Data reported in this issue can be modified at any time by Lombardini.
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Questions and answers
What is the mass of the 4ld 820d engine
The document does not explicitly state the mass of the Lombardini 4LD 820D engine. However, it provides dry weights for some engines, such as 100 kg and 105 kg for certain models. Without a direct reference to the 4LD 820D's weight, the exact mass cannot be determined.
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What oil filter is used for the 4ld 820 l engine