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WORKSHOP MANUAL
3/4 LD, CODE1-5302-556 ENGINE SERIES

3LD 450 3LD 510 3LD 450/S 3LD 510/S 4LD 640 4LD 705 4LD 820
3rd edition

SERVICE
TECO/ATL AUTHOR BOOK CODE MODEL No. DATE OF ISSUE REVIEW

1-5302-556

50839

01-94

02

DATE

AP OA PR V L

30.11.2001

1

INTRODUCTION

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 30-11-2001.

INDEX OF CHAPTERS
I II III MODEL AND IDENTIFICATION CHARACTERISTIC CURVES MAINTENANCE RECOMMENDED OIL, CAPACITIES TROUBLE SHOOTING DISASSEMBLING AND REASSEMBLING LUBRICATION CIRCUIT FUEL/INJECTION CIRCUIT ELECTRIC CIRCUIT ELECTRIC EQUIPMENT ADJUSTMENTS UPKEEPING TECHNICAL DATA MAIN DRIVING TORQUES USE OF SEALANT CLAMPING TORQUES Page " 3 4

" " " " " " " " " " " " "

5 6 7 18 20 22 23 25 27 28 29 30 31

VI V VI VII VIII IX X XI XII XIII XIV XV

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BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

02

DATE 30-11-2001

APPROVAL

REGISTRATION CODE AND IDENTIFICATION

I

LOMBARDINI Engine group number

DIESEL Displacement CC

Engine serial number Customer's code

Approval code

Customer's code Engine serial number

Engine grup number LOMBARDINI DIESEL Displacement CC

Approval code

TECO/ATL AUTHOR

BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

02

DATE 30-11-2001

APPROVAL

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Il

CHARACTERISTIC CURVES

CHARACTERISTIC CURVES CONCERNING POWER, TORQUES AND SPECIFIC CONSUMPTION

N (80/1269/EU - ISO 1585) NB (ISO 3046 - 1 IFN) NA (ISO 3046 - 1 ICXN)

AUTOMOTIVES POWER : Discontinuous services at variable rpm and load. NON-OVERLOADABLE POWER:Continuous light services at constant rpm and variable load. CONTINUOUS OVERLOADABLE POWER: Continuous heavy-duty services at constant rpm and load.

The above mentioned power levels refer to the engine equipped with air filter, standard silencer, suction fan - which previously underwent a breaking-in period - at 20°C ambient conditions, at 1 bar. The maximum power is guaranteed with a 5% tolerance. These powers are reduced of abt. 1% every 100 m height and of 2% for every 5°C exceeding 25°C. C (NB): Specific fuel consumption at NB power MT : Torque at N power a : Continuous service field of use. For any purpose out of this field of use, please contact company LOMBARDINI.

TECO/ATL AUTHOR

4

BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

02

DATE 30-11-2001

APPROVAL

MAINTENANCE -PRESCRIBED OIL - REFUELLINGS
INTERVALS (HOURS) OPERATION DETAIL 10 CLEANING AIR FILTER (OIL-BATH) (*) HEAD AND CYLINDER FINS (*) FUEL TANK INJECTORS AIR FILTER OIL LEVEL SUMP OIL BATTERY LIQUID FUEL HOSE COUPLING FASTENING VALVE AND ROCKER ARM CLEARANCE INJECTOR SETTING AIR FILTER(**) (***) SUMP (***) OIL FILTER CARTRIDGE FUEL FILTER CARTRIDGE PARTIAL (****) GENERAL 50 125 250 500 1000 2500 5000

III

CHECK

CHANGE

OVERHAUL

First replacement. (*) In particular running conditions even every day. (**) In particularly dusty environments every 4-5 hours. (***) See prescribed oil. (****) It includes the check of cylinders, segments, guides, valve seat springs and grindings, head and cylinder descaling, injection pump and injector checks.

RECOMMENDED OIL AGIP DIESEL SIGMA S SAE 30-40 MIL-L-2104 C ESSOLUBE D3 specification, MIL-L-2104 D and UNIFARM specification MIL-L-2104 C. For Countries in which AGIP and ESSO products are not available, the prescribed oil is API SERVICE CD for diesel engines or oil which should be in conformity with the MIL -L-2104 C and MIL -L-2104D military specifications.

CAPACITIES IN LITERS Standard fuel tank 3LD450, 3LD510, 3LD451/S, 3LD510/S = 5.3 4LD 640, 4LD705, 4 LD 820 = 7.2 Standard oil sump: 3LD450, 3LD510, 3LD451/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.

RATING
SAE 10W SAE 20W/20 SAE 30 SAE 40

+10 +20 +30 0 °C -20 -10 °F-13 -4 5 14 23 32 41 50 59 68 77 86
SAE 5W/30 SAE 10W/40 SAE 15W/30 SAE 15W/40

TECO/ATL AUTHOR

BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

02

DATE 30-11-2001

APPROVAL

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IV

TROUBLE SHOOTING

This table shows some possible causes concerning malfunctions that could arise during the machine running. Always, systematically carry out simpler checks before any disassembly or replacement.

TROUBLE
It starts but does not stop It does not accelerate Low oil pressure

It does not start

Inconsistent rpm

Clogged pipings Clogged fuel filter Presence of air in the fuel circuit Clogged tank breather Faulty fuel pump Blocked injector Blocked injection pump valve Wrong injector setting Plunger excessive leakage Stuck injection pump delivery control Wrong injection pump delivery setting High oil level Blocked pressure relief valve Worn oil pump Presence of air inside the oil intake pipe Faulty pressure gauge or switch Clogged oil intake duct Discharged battery Inefficient or wrong cable connection Faulty starting switch Faulty starting motor Clogged air filter Excessive idle operation Incomplete running-in Overloaded engine Advanced injection Delayed injection Incorrect governor tinkage adjustment Broken or loose govener spring Low idling setting Worn or stuck piston rings Worn or scored cylinders Worn valve guides Sticking valves Worn crankshaft-connecting rod bearings Non-sliding speed governor leverage Crank shaft not turning freely Cylinder head gasket

SETTINGS AND REPAIRINGS

MAINTENANCE

ELECTRICAL LUBRICATION EQUIPMENT

FUEL CIRCUIT

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BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

02

DATE 30-11-2001

Oil level increase

PROBABLE CAUSES

White smoke

B l a c k smoke

APPROVAL

Excessive oil consumption

Oil and fuel leakage from the exhaust

DISASSEMBLY/REASSEMBLY
DISASSEMBLY AND REASSEMBLY

V

Apart from disassembly and reassembly operations, this chapter also includes checks, setting up, dimensions, repairs and running instructions. It is necessary to use LOMBARDINI original spare parts for a correct repair.

1

Oil-bath air filter (standard) Oil-bath type with double filtering mass. The lower mass is made of metal, while the upper is made of polyurethan. Check the gasket conditions and replace them in case they are damaged. Make sure that the weldings are not damaged. Carefully clean the lower body and the filtering masses using some gas oil, blow the lower mass with compressed air and dry the upper mass by means of a cloth. Fill with engine oil filter to the indicated level. While reassembling, tighten the nuts at 25 Nm (3LD450, 3LD510, 3LD451/S, 3LD 510/S), at 30 Nm (4LD 640, 4LD 705, 4LD 820) Details: 1 Upper body 4External sealing ring 2 Filtering mass made of polyurethan 5 Filterning mass 3 Internal sealing ring 6 Bowl

Silencer (standard) Make sure that it is free from any carbon and oily residues, if contaminated, replace it. While reassembling it, replace the gaskets and tighten the brass nuts at 25 Nm.

2
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. 72713595-048. Check that the starter ring gear, when it is present, and the conic surface of the driving shaft coupling hole are intact. While reassembling, tighten the screws 1 at 170 Nm for 3LD 450, 3LD 451/S, 3LD510, 3LD 510/s and at 350 Nm for 4LD 640, 4LD 705, 4LD 820. Note: The flywheels of the left-hand engines (3LD 451/S, 3LD 510/ S) have a blading turned in the opposite direction and the nut 1 shall be anticlockwise unscrewed.

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TECO/ATL AUTHOR BOOK CODE 1-5302-556 MODEL No. 50839 DATE OF ISSUE REVIEW 01-94

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DISASSEMBLY/REASSEMBLY
Starting pulley In order to carry out any easier staring, it is necessary to place the driving shaft at the TDC (Top dead center) and to assemble the pulley with notch 1 moved back at ( 45°) according to the rotation direction of the engine, as per picture 4 and 5 . Tighten the screws at 35 Nm for 3LD 450, 3LD 451/S, 3LD510, 3LD 510/S, at 40 Nm for 4LD 640, 4LD 705, 4LD 820.

4

5
Vent plug Components 1 Vent plug and oil refiling 2 O-ring 3 Diaphragm

6

7
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.

8
Decompression (by request) Components: 1 Cover 6 Pin 2 Gasket 7 Ring 3 Lock ring 8 Lever 4 Spring 9 Pin 5 Shaft The engine rocker arm cover can be equipped with a decompression device which compresses the exhaust valve at the TDC (top dead centre), lowering it of abt. 1mm. during the starting phase. The lowering is adjusted by the gaskest thickness 2. Make sure that the lever turns for abt. half a stroke before it actuates the valve. Warning! The use of decompression to stop the engine may cause serious damages.
TECO/ATL AUTHOR

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BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

02

DATE 30-11-2001

APPROVAL

DISASSEMBLY/REASSEMBLY

V

Rocker arm pin, extraction Before extracting the rocker arm pin in 3LD 450, 3LD 451/S, 3LD 510, 3LD510S engines, unscrew screw 1, as per picture 10. Extract the pin using tool 2 Part. no. 7276-3595-040, picture 11 also for 4LD 640, 4LD 705, 4LD 820 engines.

10

11

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

12

13
Head Do not disassemble while it is hot as to avoid any possible distortion. If the head surface is distorted, smooth it by removing up to 0.3 mm thickness. Always replace the copper gasket, see picture 34 for the choice of thickness. Gradually tighten the nuts according to the following order 1, 3, 2, 4, at 50 Nm for 3LD 450, 3LD 451/S, 3LD 510, 3LD510/S, and at 80 Nm for 4LD 640, 4LD 705, 4LD 820.

14
Injector, projection The projection of the nozzle ends A with respect to the head surface shall be: 2.5÷3 mm for 3LD 450, 3LD 451/S 3÷3.5 mm for 3LD 510, 3LD 510/S 3.5÷4 mm for 4LD 640, 4LD 705, 4LD 820 Adjust by means of a copper gasket B having a thickness of 0.5 mm, 1 mm, 1.5mm .

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TECO/ATL AUTHOR BOOK CODE 1-5302-556 MODEL No. 50839 DATE OF ISSUE REVIEW 01-94

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DISASSEMBLY/REASSEMBLY
Valves 1 2 3 4 5 Valve stem Spring holding disk Spring Cap Cotters

Note: In order to remove the cotters, put a shim under the valve head and strongly press, as shown in picture 16.

16

17
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 ÷ 11.06 4LD 640, 4LD 705, 4LD 820 A = 47.80 ÷ 48.20 B = 65.80 ÷ 66.20 C = 12.000 ÷ 12.018 D = 12.05 ÷ 12.06 Note: Valve guides with an external dia. increased of 0.5 mm can be used as spare parts; in this case it is necessary to increase the housing C of 0.5 mm for the assembly.

18
Valve guides insertion Heat the head at 160° ÷ 180°. Force the guides according to A and B distance with respect to the head surface. 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S A = 30.80 ÷ 31.2 B = 18.8 ÷ 19.2 4LD 640, 4LD 705, 4LD 820 A = 35.8 ÷ 36.2 B = 17.8 ÷ 18.2 Note: if the guides are supplied with the housing for the lock ring C, insert the ring, then drive the guides without worrying about A and B. Valve guide dimensions and clearances 3LD 450, 3LD 451/s, 3LD 510, 3LD 510/S (mm): D = 7.030 ÷ 7.050 E = 6.985 ÷ 7.000 (D-E) = 0.030 ÷ 0.065 (D-E) limit= 0.13 4LD640, 4LD 705, 4LD 820 D = 8.030 ÷ 8.050 E = 7.985 ÷ 8.000 (D-E) = 0.030 ÷ 0.065 (D-E) limit =0.13 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 ÷ 43.01 C = 36.99 ÷ 37.01 B = 43.12 ÷ 43.14 D = 37.10 ÷ 37.12 Drive the seats in the housings and mill at 45°.

19

20

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BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

02

DATE 30-11-2001

APPROVAL

DISASSEMBLY/REASSEMBLY

V

Valve seat grinding After milling, grind with fine emery paste in engine oil bath. The S sealing surface shall not exceed 2 mm. Embed valves D after grinding for 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S = 0.55 ÷ 1.05 mm; for 4LD 640, 4LD 705, 4LD 820 = 0.45 ÷ 0.95 mm.

21

22
Cylinder and piston Set a bore gauge to zero with a calibrated ring. Check the dia. Ų at points A and B at three different heights, see pictures 23 and 24. In case of wear exceeding 0.06 mm to the maximum value prescribed, grind the cylinder at the subsequent increased value. The increases suggested are 0.50 and 1.00 mm. Measure the piston Q dia. (picture 26) at A height from the skirt base: A = 17 mm (3LD 450, 3LD 451/S, 4LD 820) A = 12 mm (3LD 510, 3LD 510/S) A = 22 mm (4LD 640, 4LD 705) Remove the stop rings and extract the piston pin, picture 25. Remove the piston rings and clean the slots. Replace the piston as well as the segments in case the dia. wear exceeds 0.05 mm as regards to the minimum value prescribed. Dimensions (mm)

23

24

ENGINES

Ų

Q
84.925 ÷ 84.945

(Ų-Q)
0.05 ÷ 0.09 0.10 ÷ 0.14 0.15 ÷ 0.19 0.11 ÷ 0.17

3LD 450, 3LD 451/S 3LD 510, 3LD 510/S 85.00 ÷ 85.02 4LD 640 4LD 705 4LD 820

95.00 ÷ 95.02 94.88 ÷ 94.90 100.00 ÷ 100.02 99.83 ÷ 99.85 102.00 ÷ 102.02 101.85 ÷ 101.89

25

26

Note: Even if 3LD 450, 3LD 451/S and 3LD510, 3LD510/S pistons have the same bore, they differ in other dimensions, thus they are not interchangeable.

Distance among segment ends (mm) Insert the piston ring in the lower part of the cylinder, then measure the distance among the points. 3LD 450, 3LD 451/S, 3LD510, 3LD 510/S 1st piston ring (chromium plated) A = 0.30 ÷ 0.50 2nd piston ring (torsional) A = 0.30 ÷ 0.50 3rd piston ring (scraper ring) A = 0.25 ÷ 0.50 4LD 640, 4LD 705, 4LD 820 1st piston ring (chromium plated) A = 0.40 ÷ 0.65 2nd piston ring (torsional) A = 0.40 ÷ 0.65 3rd piston ring (torsional) A = 0.40 ÷ 0.65 4th piston ring (oil scraper ring) A = 0.30 ÷ 0.60

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TECO/ATL AUTHOR BOOK CODE 1-5302-556 MODEL No. 50839 DATE OF ISSUE REVIEW 01-94

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DISASSEMBLY/REASSEMBLY
Piston ring - Clearances among slots (mm) 3LD 450, 3LD 451/S, 3LD 510, 3LD 510S, picture28 A = 0.08 ÷ 0.09 B = 0.06 ÷ 0.07 C = 0.05 ÷ 0.06 4LD 640, 4LD 705, 4LD 820, picture 29 A = 0.12 ÷ 0.14 B = 0.07 ÷ 0.09 C = 0.07 ÷ 0.09 D = 0.06 ÷ 0.08

28

29
Piston ring assembly order 3LD 450, 3LD 451/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) C = slot for third piston ring(torsional) D = slot for fourth piston ring(oil scrarper ring) Note: before inserting the piston in the cylinder, oil the piston ringwith engine oil and turn them, thus the cuts are misaligned.

30

31
Piston reassembly Couple the piston with the connecting rod, thus the combustion chamber centre B is perpendicularly under end A of the nozzle housed inside the head. Lubricate the piston pin and insert it in the piston, lightly pressing with your thumb. Make sure that the two stop rings are well housed inside their seats.

32

33

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BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

02

DATE 30-11-2001

APPROVAL

DISASSEMBLY/REASSEMBLY
Clearance volume A = Clearance volume B = Head gasket

V

The thickness B head gasket determines the clearance volume A which shall be 0.75 ÷ 0.90 mm for 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S and 0.80 ÷ 1.00 mm for 4LD 640, 4LD 705, 4LD 820. Measure the piston crown position as to the cylinder surface and chose a gasket having a suitable thickness. Always consider that the piston at the top dead centre could be at the same level, either under or over the cylinder.

34
Connecting rod equipped with bearings and piston pin For 3LD 450, 3LD 451/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 = 27.995 ÷ 23.000 For 4LD 640, 4LD 705, 4LD 820 Dimensions (mm) A = 162.95 ÷ 163.05 B = 28.02 ÷ 28.03 C = 55.40 ÷ 55.43 D = 27.995 ÷ 28.000 The connecting rod big end bearings are supplied either at nominal value and diminished to 0.25 and 0.50 mm. Connecting rod, big end bearings While reassembling, the A and B centering marks should not be on the same side. Tighten the screws at 30 Nm for 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S and at 45 Nm for 4LD 640, 4LD 705, 4LD 820.

35

36

37
Main bearing on flywheel side Extract the bearing using three screws, as per picture 38. While reassembling, replace gasket 1. Check that the oil seal ring is intact. Tighten the screws at 25 Nm.

Drive shaft axial clearance After having screwed the main bearing on the flywheel, check drive shaft axial clearance. Its value is 0.10 ÷ 0.40 mm for 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S and 0.10 ÷ 0.30 mm for 4LD 640, 4LD 705, 4Ld 820. The adjustment is carried out by changing the gasket 1 thickness.

38
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BOOK CODE 1-5302-556 MODEL No. 50839 DATE OF ISSUE REVIEW 01-94

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DATE 30-11-2001

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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 2 Bush 3 Gasket Fix the door at its base at 25 Nm. For 4LD 640, 4LD 705, 4LD 820 picture 41 4 Port 5 Gasket 6 Ball bearing Fix the port at its base at 40 Nm.

40

41
Camshaft axial clearance Carry out this check before assembling the head. Fix the side distributor port or bell 1 at 25 Nm. Remove the intake and exhaust tappets and with an implement operate on the camshaft forward and backward in an axial direction. The axial clearance A shall be: A = 0.20 ÷ 0.60 mm 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S. A = 0.15 ÷ 0.65 mm for 4LD 640, 4LD 705, 4LD 820. Adjust the clearance by changing the gasket thickness between the distributor port (if it is assembled) or bell 1 and the base; it is forbidden to assemble more than one gasket.

42
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.

43
Drive shaft lubrication ducts Remove the caps, clean the ducts A and B with a point and blow them with compressed air. Replace the caps by caulking them on their seat, then check their seal. Drive shaft connecting radius R = 3 mm R1 = 3.5 mm Note: When the main journal and the crank are ground, it is essential to reset R and R1 values in order to avoid any possible breaking of the drive shaft.

44
TECO/ATL AUTHOR

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BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

02

DATE 30-11-2001

APPROVAL

DISASSEMBLY/REASSEMBLY
Drive shaft main journal and crank diametres (mm) 3LD 450, 3LD 510, 3LD 451/S, 3LD 510/S A = 39.990 ÷ 40.000 B = 41.987 ÷ 42.000 C = 41.990 ÷ 42.000 D = 29.990 ÷ 30.000 4LD 640, 4LD 705, 4LD 820 A = 44.900 ÷ 45.000 B = 55.340 ÷ 55.353 C = 44.900 ÷ 45.000 D = 29.990 ÷ 30.000

V

45
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 ÷ 30.09 A, B, C, D, see picture 45 E - A = 0.040 ÷ 0.060 worn limit 0.12 F - B = 0.028 ÷ 0.065 worn limit 0.13 G - C = 0.040 ÷ 0.060 worn limit 0.12 H - D = 0.070 ÷ 0.10 worn limit 0.18 4LD 640, 4LD 705, 4LD 820 E = 45.045 ÷ 45.070 F = 55.40 ÷ 55.43 G = 45.045 ÷ 45.070 A, B, C, D, see picture 45 E - A = 0.065 ÷ 0.080 worn limit 0.16 F - B = 0.051 ÷ 0.10 worn limit 0.18 G - C = 0.45 ÷ 0.080 worn limit 0.16 CAMSHAFT Components: 1 Base side pin 2 Intake cam 3 Injection cam 4 Exhaust cam 5 Gear 6 Side distributor port pin Note: The two engine series 3LD 450, 3LD 510 and 4LD 640, 4LD 820 have the same camshaft; it differs in 3LD 451/S and 3LD 510/S left-handed engines.

46

47
Camshaft intake and exhaust cam timing For 3LD 450, 3LD 510, 4LD 640, 4LD 705, 4LD 820, see picture 48. Clockwise rotation. TDC = Top dead centre of the piston A = Intake cam axis S = Exhaust cam axis at = 50° 30' ÷ 51° 30' For 3ld 451/S, 3LD 510/S, see picture 49 Clockwise rotation TDC= Top dead centre of the piston A = Intake cam axis S = Exhaust cam axis at = 50° 30' ÷ 51° 30'

48
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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

50
Camshaft intake and exhaust cam height. The two cam heights are different. Dimensions (mm) : H = 33.92 ÷ 34.02 (intake cam) H1 = 33.42 ÷ 33.52 (exhaust cam) If the cam wear exceeds the agreed minimum value of 0.1 mm for H and H1 , replace the camshaft.

51
Distribution timing assemble the camshaft gear by coinciding reference 1 with reference 2 of the gear (camshaft key).

52
Distribution timing without following the references Place piston A at the top dead centre. Insert the camshaft, thus the intake cam B and the exhaust cam C are well balanced (while the intake opens, the exhaust closes). Insert the respective tappets D and E. Carry out the check: the intake D and exhaust E tappets laid on their cams shall be at the same level F.

53
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DATE 30-11-2001

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DISASSEMBLY/REASSEMBLY

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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. A spring with two plates 4, energized by the accelerator control 5, opposes the action of the governor cetrifugal force. The balance between the two forces keeps the rpm rate constant with the change of load.

54
Timing of the speed governor Adjust the injection pump control lever 1 thus, when the governor is closed, it is placed at distance A as to the external surface of the base. - Loosen the screw 2. - Close the governor (move the mobile bell 3 towards the operator, picture 55). - Place lever 1 at A distance, picture 56 (22 mm for 3LD 450, 3LD 510, 3LD 451/S, 3LD 510/S and 28 mm for 4LD 640, 4LD 705, 4LD 820). - Tighten the screw 2.

55

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VI

LUBRICATION CIRCUIT
Lubrication circuit Details: 1 Intake pipe 2 Oil pump 3 Oil filter 4 Pressure switch 5 Crankshaft bearing 6 Pressure adjusting valve 7 Tappet rod protection pipe 8 Vent and oil filler plug.

57
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. Tighten the pump case at 30 Nm. Tighten the pump control gear at 20 Nm. The oil pumps for 3LD 451/S and 3LD 510/S engines, which turn anticlockwise (from flywheel position), are different, see information below.

58

59

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LUBRICATION CIRCUIT

VI

Oil pump, difference between clockwise rotation pump and anticlockwise pump The difference between the oil pump on clockwise rotation engines and the anticlockwise one is the suction duct provided either with the pump case and with the base. See picture 60 for anticlockwise rotation engines from flywheel position (3LD 451/S, 3LD 510/S). A =Intake B = Delivery Picture 61, for clockwise rotation engines, seen from the flywheel side (3LD 450, 3LD 510, 4LD 640, 4LD 705, 4LD 820) C = Intake D = Delivery

60

61
Oil filter cartridge Componens: 1 Gasket 2 Assembly 3 Antidrainage rubber cap 4 Filter element

5 Bowl 6 By-pass valve 7 Spring

Features: Maximum operating pressure: 7 bars Maximum operating temperature: -25° + 150°C Filtering degree: 20 µm By-pass valve setting: 1÷ 1.4 Total filtering surface: 750 cm
2

62
Oil pressure regulating valve It is housed in the flywheel side main bearing For 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S, see picture 63 1 Support 4Sheet metal 2 Valve 5 Screw 3 Spring Tighten the support at 25 Nm. For 4LD 640, 4LD 705, 4LD 820,see picture 64 1 Support 5 Spring 2 Gasket 6 Flange 3 Valve support 7 Plate 4 Ball 8 Screw Tighten the support at 40 Nm. 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. Oil pressure curve with the engine at its maximum speed It is shown on the filter and obtained with the engine at 3000 rpm at N power; the pressure is expressed in bars and the temperature in degrees Celsius. The curve represents the pressure minimum value, while its maximum value is 5 bars. The minimum oil pressure (1200 rpm) with the oil temperature at 100° C shall not be lower than 0.8 bars. Note: When the engine has been run in, the oil lubrication maximum temperature shall be lower than the following addition: ambient temperature + 95° C.
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64

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VII

FUEL/INJECTION CIRCUIT
Standard feeding/injection circuit Components: 1 Tank 2 Filter 3 Pump 4 Pipe 5 Injector 6 Injector waste pipe

66
Fuel filter inside the tank (standard) Details: 1 2 3 4 5 Spring Disk Ring Cartridge Gasket 6 Gasket 7 Cover 8 Ring 9 Bolt

Cartridge features: Filtering degree = 7 µm Filtering surface = 390 cm2

67
Feeding pump (by request) Features: at 1500 rpm of the control eccentric, the minimum delivery is 60 l/h, while the automatic adjustment pressure is 4 ÷ 5 m column of water. Feeding pump rod projection Details: 1 Feeding pump 3 Rod 2 Base 4 Oil pump drive shaft eccentric The check shall be carried out with the eccentric 4 at rest. The projection A of rod 3 is 0.8 ÷ 1.2 mm; it shall be adjusted with the following supplied gaskets having a thickness of 0.50; 0.80 and 1.0 mm. Rod length = 65.4 mm for 3LD 450, 3LD 451/S, 3LD 510, 3LD 510/S and 75.2 mm for 4LD 640, 4LD 705, 4LD 820.

68

Injection pump Components: 1 Delivery fitting 2 O-ring 3 Spring 4 Delivery valve 5 Gasket 6 Barrel 7 Pump case 8 Eccentric 9 Sector gear 10 Spring bearing cap Tighten the pump at its base at

11 Spring 12 Pumping piston 13 Tappet case 14 External roller 15 Internal roller 16 Pin 17 Lock ring 18 Rack rod 19 Lock pin 20 Collar 30 Nm.

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DATE OF ISSUE REVIEW 01-94

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DATE 30-11-2001

APPROVAL

FUEL/INJECTION CIRCUIT

VII

Injection pump assembly Insert the cylinder 6 in the pump case 7, engaging the slot A in the eccentric 8. Insert the delivery valve 4, copper gasket 5, spring 3 O ring 2, then tighten the fitting at 3.5 ÷ 40 Nm. Assemble the rack rod 18 and sector gear 9 coinciding points B. Insert the upper collar 10, spring 11 and piston 12 with reference C on the same side of the slot A (if it is assembled on the opposite side, the engine revs out). Assemble the collar 20, the tappet 13 with rollers 14, 15 and pin 16. While pressing on the tappet, insert the pin 19 and the ring 17.

71
Advanced injection (static) Disconnect the diesel oil thrust pipe fitting, being careful not to loosen also the pump delivery fitting 1, then screw the tester for the advanced injection check 2. Fill the tank, checking that the fuel level is at least 10 cm above the tester. Place the accelerator lever halfway. Turn the flywheel towards the engine rotation direction and make sure that the fuel arrives at the tester assembled on the injection pump delivery fitting. Repeat this operation; during the compression phase, operate slowly and immediately stop when the fuel moves into the tester hole; move the flywheel 3 mm back; this is the static advanced injection. If C does not coincide with B but comes before, add some shims under the pump, otherwise, remove the shims if C is beyond B. Note: By removing or adding a 0.1 mm shim under the pump, it is possible to delay or advance C, which is after B.

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73

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 a Reference in degrees D Flywheel protection disk diameter

ENGINES
3LD 450, 3LD 451/S 3LD 510, 3LD 510/S 4LD 640, 4LD 705, 4LD 820 4LD 820 at 2600 rpm

(A-B)mm
58 ÷ 63 65 ÷ 70 60 ÷ 65

amm
24 ÷ 26

D (3LD)mm D (4LD)mm
276 310

22° ÷ 24°

74

Note: 1° stands for 2.7 mm on dia. D= 310 mm; on dia. D = 276 mm, 1° stands for 2.4 mm. Injector Components: 1 Ring nut - 2 Nozzle 3 Needle 4 Fitting 5 Nozzle bearing 6 Pressure rod 7 Spring 8 Spring seat 9 Union 10 Ring nut Setting Connect the injector to a manual pump and check that the setting pressure is 190 ÷ 200 bars. If necessary adjust, actuating the union 9.While replacing the spring, the setting shall be carried out at a pressure higher than 10 bars (200 ÷210 bars) in order to counterbalance the running adjustments. Check the needle valve seal by slowly activating the manual pump up to abt. 170 bars. In case of dripping, replace the nozzle. Tighten the injector to the head at 15 Nm for 3LD 450, 3LD 451/S, 3 LD 510, 3 LD 510/S and at 20 Nm for 4LD 640, 4LD705, 4LD 820. Note: A new injector is currently assembled, its components are different, though the setting remains the same.
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VIII

ELECTRIC CIRCUIT
12 V 14 A electrical ignition, diagram with voltage regulator , battery recharge lamp and manostat Components: 1 Alternator 2 Starting motor 3 Voltage regulator 4 Battery 5 Oil pressure switch 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 4LD 640 = 55 Ah 4LD 705 = 66 Ah 4LD 820 = 70 Ah

76
12.5 V 14 A alternator It is equipped with a fixed rotor assembled on the main journal, while the pivoting rotor is housed inside the flywheel. Dimensions (mm): A = 159 B = 44.5 C= 4 D = 28.5 Note: The clearance between inductor and rotor (air gap) shall be 0.5 ÷ 0.6 mm.

77
12,5 V, 14 A alternator battery recharge curve It is carried out at + 25° C ambient temperature, 12.5 V battery voltage.

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DATE 30-11-2001

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ELECTRIC EQUIPMENT

IX

Voltage regulator There are two different types of regulators: one with make SAPRISA, ALTECNA, NICSA and the other with make DUCATI. ALTECNA SAPRISA NICSA ~ R + LE Cable colours yellow red red green brown Tab dimensions Width Thickness 6.25 9.50 9.50 4.75 6.25 0.8 1.2 1.2 0.8 0.8

DUCATI G R B L C

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80
Voltage regulator, running check Make sure that the connections are in compliance with the diagram. Remove the respective clamp from the battery positive pole. Insert a voltmeter with direct current between the two poles of the battery. Connect a 20A ammeter at direct current between the positive pole and cable 1 respective clamp. Start a few times until the battery voltage goes down to 13 V. When the battery voltage reaches 14.5 V, the ammeter current will drop to a value near zero. If the voltage is lower than 14 V and the recharge current is zero, replace the regulator. Note: The voltage regulator does not work when not earthed and the battery is completely discharged. Warning: when the engine runs, do not remove the battery cables and do not take the key off the control board. Do not place the regulator near heat sources, a temperature exceeding 75° C could cause damages. Avoid any electric welding either on the engine and on the equipment.

81

Bosch DW (L) 12 V 1, 1 KW type, starting motor For 3LD 450, 3LD 510 Anticlockwise rotation direction (seen from the flywheel side) A = 29.5 ÷ 31.5 mm (rim surface and motor flange distance) Note: For any possible repairs, please contact centres. bosch service

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DATE OF ISSUE REVIEW 01-94

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DATE 30-11-2001

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IX

ELECTRIC EQUIPMENT
Characteristic starting motor curves for Bosch DW(L) 12V 1.1 kW type,

83

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

84

Characteristic curves for Bosch JF(L) 12V 2,5 kW type starting motor

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DATE 30-11-2001

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ADJUSTMENTS

X

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.

86
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; then fasten the lock nut. Note: The peak rpm standard idle adjustment of 4LD 820 shall be carried out at 2800 rpm.

87
Injection pump delivery adjustment (standard) This adjustment shall be carried out with the engine at dynamometric brake, otherwise the resulting adjustment could be approximate; in this case operate as it follows. · Unloose the screws 1 and 2 by 1/4 of a turn · Move the limiting device 3, thus the screw 2 stays in the centre of the slot. Tighten the screws 1 and 2. Carry out the exhaust smoke check as it follows: · Abruptly start the accelerator at idle. In case of a quick pickup with light exhaust smoke to the Bosch scale index 3, this means that the limiting device is correctly adjusted. · In case of a slow pickup without smoke, move the limiting device towards the left (pumping duration increase). · In case of a rapid pickup with thick smoke (exceeding index 3 of Bosch scale), move the limiting device towards the right (pump duration decrease).

88

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DATE OF ISSUE REVIEW 01-94

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DATE 30-11-2001

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X

ADJUSTMENTS
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.

89
Adjustment of injection pump delivery with braked engine 1) Bring the engine to its idling point . 2) Move the delivery limiting device 3 towards the left, see picture 88 3) Operate the engine until it reaches the power and rpm required by the manufacturer of the equipment. 4) Make sure that the consumption is in compliance with the values specified in the table of the adjustments (see information below). If the consumption is in compliance with the fixed values, it is essential to change the balance conditions measured on the brake, operating either on the load and on the regulator. When the engine is steady, carry out the consumption check again. 5) Move the limiting device 3 towards the right, as per picture 88, until the engine rpm number descreases. Lock the limiting device by means of the two screws. 6) Completely release the brake and check the rpm at which the engine settles. The speed governor performances shall be in compliance with the class required by the manufacturer of the equipment. 7) Stop the engine. 8) When the engine is cold, check the valve clearance again. Required adjustments (the most demanded) Specific fuel consumption * Time secs r/kW.h for 100 cc. 140-146 143-149 117-122 96-100 96-100 108-113 87-92 272-283 285-299 272-283 284-295 276-287 263-277 258-273

Engine

Rpm

Kw power N 7,5 NB 7 N9 N 10,5 N 10,8 N 10 N 12,1

3LD 450 3LD 450

3000 3600 3000 3000 3000 2600 2600

90

3LD 510 4LD 640 4LD 705 4LD 705 4LD 820

* The specific consumption values indicated are valid after abt. 100 working hours.

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UPKEEPING
UPKEEPING

XI

The engines to be stored for more than 30 days shall be prepared as follows: Temporary protection (1÷ 6 months). · Start the engine at idle and at a minimum rpm for at least 15 minutes. · Fill the sump with protection oil MIL -1-644-P9 and operate for 5 ÷ 10 minutes at 3/4 of maximum speed. · When the engine is heated, empty the sump and refill with new normal oil (picture 91). · Remove the fuel filter cover and empty the tank (picture 92). · Desassemble the fuel filter, replace the cartridge and, if it is not dirty, reassemble it. · Carefully clean fins, cylinder and head (picture 93). · Seal with adhesive tape all the openings. · Remove the injector, (pictureaw) pour abt. a spoon of oil SAE 30 into the cylinder and manually turn in order to spread the oil. Reassemble the injector. · Spray SAE 10W oil in the exhaust and intake duct, rocker arms, valves, tappets, etc. and protect with some grease the parts which are not painted. · Wrap the engine in plastic cloth. · Keep it in a dry place, possibly not in direct contact with the ground and away from high voltage electric lines.

91

92

Permanent protection (over 6 months) Apart from the previous instructions, we advise you to: · Treat the lubrication and injection system, together with the mobile parts, with rust preventing oil having MIL-L-21260 P 10 2nd degree features , SAE 30 (i.e.ESSO RUST - Ban 623 - AGIP, RUSTIA C. SAE 30). Run the engine equipped with rust preventing oil and let the exceeding oil off. · Coat the external non-painted surfaces with rust preventing oil, having the MIL - C - 16173D features - 3rd degree (For example ESSO RUST BAN 398 - AGIP, RUSTIA 100/F). Preparation for the setting at work · Clean the external part of the engine. · Remove all protections and coverings. · Remove the rust preventer from the external part by means of a suitable solvent or degreasing product. · Desassemble the injector, fill it with normal oil, pivot the drive shaft of some turns, then desassemble the sump and let the oil containing the protective element off. · Check the injector, valve clearance, head tightening, oil and air filter setting. If the engine has been stored for quite a long period (over 6 months), check a bearing in order to find any possible trace of corrosion.

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XII

28
3LD450 N. mm mm Cm³

3LD450, 3LD510, 4LD640, 4LD705, 4LD820 FEATURES
3LD510 4LD640 4LD705 4LD820

TECHNICAL DATA

TECO/ATL AUTHOR

ENGINE TYPE

1-5302-556

BOOK CODE

Cylinders Bore Stroke Displacement Compression ratio rpm N DIN 70020 - 80/1269/CEE - iso 1585 KW Power NB DIN 6271 - ISO 3046 - 1 IFN NA DIN 6271 - ISO 3046 - 1 ICXN

MODEL No.

50839

DATE OF ISSUE

01-94

REVIEW

Peak torque * Fuel specific consumption Oil consumption Dry weight Combustion air volume at 3000 rpm Cooling air volume at 3000 rpm Max. axial load permissible for drive shaft in two directions instantaneous Max. inclination extended to 1 h. permanent

Nm RPM l/h Kg/h Kg. l./1' l./1' Kg. a

1 85 80 454 17,5:1 3000 7,5 6,6 6,0 28,5 @ 1700 1,7 0.007 57 560 9000 250 35° 30° **** 1 85 90 510 17,5:1 3000 9,0 7,3 6,6 32,8 @ 1800 1,9 0.008 60 630 9000 250 35° 30° **** 1 95 90 638 17,0:1 3000 10,5 8,8 7,9 38,7 @ 1700 2,4 0.024 100 780 12000 300 35° 25° **** 1 100 90 707 17,0:1 3000 12,0 9,9 D 8,8 D 43,1 @ 2000 2,6*** 0,030*** 100 770 D 10400 D 300 35° 25° ****

1 102 100 817 17,0:1 3000 13 11,4 D 10,3 D 48 @ 1600 3,0*** 0,035*** 105 890 D 10400 D 300 35° 25° ****

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* It stands for power ** It stands for NB power *** It stands to NB power at 2600 rpm **** According to the application D at 2600 rpm Note: For LDA 450, LDA 510, LDA 96, LDA 97, LDA 820 out-of-production engines, the repair specifications are equal to those of the engines specified in the table. 3 LD 451/S, 3LD 510/S engines, which are currently produced, not specified in the table, turn anticlockwise ( seen from the flywheel side), and are provided with the same feature as 3LD450 and 3LD510engines.

MAIN DRIVING TORQUES
3LD 450 - 3LD 510 - 3LD 451/S - 3LD 510/S MAIN DRIVING TORQUES
POSITION Injection pump union Connecting rod Clutch bearing bell bolt Flanging bell Clutch bell (industrial engine) Rocker arm box cap Oil sump Oil pump case Air filter Oil filter Oil pump gear Injector towards the head Rocker arm fulcrum pin for injection pump Gear pin for speed governor Engine foot Injection pump Distributor side port Oil pressure switch Starting pulley Main bearing on flywheel side Sump oil drain bolt Cylinder Flywheel REFERENCE ( Picture NO. ) 71 36 8 58 1 58 75 69 40 4 63 14 3 Dia. /Pitch ( mm ) 18x1.5 8x1.25 14x1.5 8x1.25 16x1.5 8x1.25 6x1 8x1.25 8x1.25 8x1.25 8x1.25 8x1.25 14x1.5 10x1.5 8x1.25 8x1.25 8x1.25 12x1.5 8x1.25 8x1.25 10x1.5 10x1.5 20x1.5

XIII

Torque ( Nm ) 40 30 250 25 80 20 10 30 25 25 20 15 60 40 40 25 25 35 35 25 35 50 170

MAIN DRIVING TORQUES 4LD 640 - 4LD 705 - 4LD 820
POSITION Injection pump unit Connecting rod 4LD 820 clutch bearing bell bolt 4LD 640, 4LD clutch bearing bell bolt Bolt for hub Flanging bell Rocker arm box cap Oil sump Oil pump case Air filter Oil filter Oil pump gear Injetor towards the head Rocker arm pin for injection pump control Gear pin for speed governor Engine foot Injection pump Distributor side port Oil pressure switch Starting pulley Main bearing on flywheel side Sump oil drain bolt Cylinder head Flywheel Reference ( picture no.) 71 36 8 58 1 58 75 69 41 4 64 14 3 Dia. / Pitch ( mm ) 18x1.5 10x1.5 14x1.5 14x1.5 14x1.5 10x1.5 8x1.25 8x1.25 8x1.25 10x1.5 8x1.25 8x1.25 8x1.25 8x1.25 10x1.5 10x1.5 8x1.25 10x1.5 12x1.5 10x1.5 10x1.5 14x1.5 12x1.5 20x1.5 Torque ( Nm ) 40 45 280 250 280 40 20 25 40 50 25 20 20 30 40 40 30 40 35 40 40 70 80 350

TECO/ATL AUTHOR

BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

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DATE 30-11-2001

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XIV

USE OF SEALANT

USE OF DOPE FOR 3LD 450 - 3LD 510 - 3LD 451/S - 3LD 510/S

POSITION Clutch bearing bell and embedded hexagonal-head screws Control pin threading Coupling nipple for oil filter cartridge Stud bolt for clamping on engine head Stud bolt for clamping on main bearing flywheel side Stud bolt for clamping on distributor port side Stud bolt on engine bell Clamping screw for pin regulator Clamping screw for baffle on air conveyor Stud bolt for clamping on engine flange bell Rocker arm fulcrum pin for injection pump control Bracket clamping screw on side plates Stud bolt for clamping at feeding pump

TYPE OF SEALANT LOCTITE LOCTITE LOCTITE LOCTITE LOCTITE LOCTITE LOCTITE LOCTITE LOCTITE LOCTITE LOCTITE LOCTITE LOCTITE 270 270 270 270 270 270 270 270 270 270 270 270 270

USE OF DOPE FOR 4LD 640 - 4LD705 - 4LD 820

POSITION Bearing on port or bell Regulating pin threading Stud bolt for clamping on engine head Stud bolt for clamping on main bearing on flywheel side Stud bolt for clamping on distribution side Lock screw for rocker arm pin Clamping screw for regulating pin Industrial port Stud bolt for clamping on feeding pump

TYPE OF SEALANT LOCTITE 270 LOCTITE 270 LOCTITE 270 LOCTITE 270 LOCTITE 270 LOCTITE 270 LOCTITE 270 DOW CORNING Q3 - 7091SILICONE LOCTITE 270

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DRIVING TORQUES

XV

DRIVING TORQUES FOR STANDARD SCREWS

NAME

Dia. per pitch (mm) 4x0.70 5x0.80 6x1.00 7x1.00 8x1.25 9x1.25 10x1.50 13x1.75 14x2.00 16x2.00 18x2.50 20x2.50 22x2.50 24x3.00

R 800 N/mm² Nm 3.6 7 12 19.8 29.6 38 52.5 89 135 205 257 358 435 557 Kgm 0.37 0.72 1.23 2.02 3.02 3.88 5.36 9.09 13.80 21.00 26.30 36.60 44.40 56.90

R 1000 N/mm² Nm 5.1 9.9 17 27.8 41.6 53.4 73.8 125 190 289 362 504 611 784 Kgm 0.52 1.01 1.73 2.84 4.25 5.45 7.54 12.80 19.40 29.50 37.00 51.50 62.40 80.00

R 1200 N/mm2 Nm 6 11.9 20.4 33 50 64.2 88.7 150 228 347 435 605 734 940 Kgm 0.62 1.22 2.08 3.40 5.10 6.55 9.05 15.30 23.30 35.40 44.40 61.80 74.90 96.00

TECO/ATL AUTHOR

BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

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DATE 30-11-2001

APPROVAL

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GENERAL ALPHABETICAL INDEX
Adjustments Advanced injection Advanced injection reference on conveyor and Air filter Alternator Battery characteristic curve Bosch DW(L) starting motor Bosch JF(L) starting motor Camshaft Camshaft axial clearance Camshaft intake and exhaust cam timing Camshaft, intake and exhaust cam height Characteristic curves Characteristic curves of Bosch JF(L) starting motor Characteristic curves of Bosch DW(L) starting motor Clearance volume Connecting rod equipped with bearings and piston pin Cylinder and piston Decompression Disassembly/reassembly Distributor side port Sealant use Drive shaft Drive shaft axial clearance Drive shaft crankshaft bearing/connection rod head Drive shaft fitting radii Drive shaft lubrication ducts Drive shaft main journal and crank dia. Driving torques Electric circuit Electric equipment Electric starting diagram Fuel/injection circuit Flywheel flywheel protection disk Fuel filter Fuel pump Fuel pump rod projection Head Big end bearing connecting rod Idling adjustment Injection pump Injection pump assembly Injection pump delivery adjustment Injection pump delivery adjustment with braked engine Injection pump delivery limiting device Injector Injector projection Lubrication circuit Main bearing on flywheel side Main driving torque Maintenance Maintenance, prescribed oil, refuellings Oil filter cartridge Oil pressure check Oil pressure curve with engine at its peak rpm Oil pressure regulating valve Oil pump Oil pump, difference between clockwise and anticlockwise rotation Peak rpm adjustment Permanent protection Pin and housing dimensions for camshaft Preparation for the setting at work Prescribed oil Reassembly of piston Capacities Registration code and identification Repairing Rocker arm pin extraction Rocker arm Pin/Hole Rocker arm valve clearance Piston rings assembly order Piston rings, distance among ends Setting Silencer Speed governor Speed governor, timing
TECO/ATL AUTHOR

Starting pulley Temporary protection Timing system Timing system without considering any reference Upkeeping Valve clearance housings Valve guide clearance dimensions Valve guide insertion Valve seat grinding Valve seat housings Valves Vent plug Voltage regulator Voltage regulator running check

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DATE 30-11-2001

APPROVAL

42100 Reggio Emilia, Italy Via Cav. del Lavoro Adelmo Lombardini,2 Casella Postale 1074 Tel. (0522) 3891 - Telex: 530003 Motlom I Telegr: Lombarmotor - Telefax (0522) 389465

La Lombardini si riserva il diritto di modificare in qualunque momento i dati contenuti in questa pubblicazione. Lombardini se réserve le droit de modifier, ą n'importe quel moment, les données reportées dans cette publication. Data reported in this issue can be modified at any time by Lombardini. Lombardini behält sich alle Rechte vor, die hierin enthaltenen Angaben jederzeit zu ändern. La Lombardini se reserva el derecho de modificar sin previo aviso los datos de esta publicación.

TECO/ATL AUTHOR

BOOK CODE 1-5302-556

MODEL No. 50839

DATE OF ISSUE REVIEW 01-94

02

DATE 30-11-2001

APPROVAL

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