Lombardini LGA 280 OHC Parts list manual

LGA 280 OHC
LGA 340 OHC
USE-MAINTENANCE

2
LGA 280 - 340 OHC
1 10 20 30 40 50 60 70 80 90 100
Summary of first maintenance operations.
PROCEDURE ELEMENT FREQUENCYx1.000Km
Every 1.000Km
CHECK
ENGINE OIL LEVEL
COOLING SYSTEM
AIRCLEANER
FUEL PIPES AND UNIONS
EXHAUST SYSTEM
SPARK PLUGS
VALVE CLEARANCE
Oil filter replacement.
MAINTENANCE EXTRAORDINARY
AFTER THE FIRST 1.000 Km Engine oil replacement.
Every 5.000Km

3
1 10 20 30 40 50 60 70 80 90 100
Summary of first maintenance operations.
(*) Once removed, the timing belt must be replaced, even if it has not reached its scheduled change interval.
Keep the same maintenance intervals above 100.000 km.
Even if the set mileage has not been reached, replace the following :
- engine oil after one year
- timing belt after four years
ENGINE OIL
LUBE OIL FILTER
FUEL FILTER
AIR CLEANER CARTRIDGE
SPARK PLUGS
TIMING BELT (*)
FREQUENCYx1.000Km
REPLACEMENT
LGA 280 - 340 OHC
PROCEDURE ELEMENT

4
P. 2 - 3
6
7
8
9
10
10
10
10
11
11
11
12
12
12 - 13
13
13
14
14
P. 14
15
15
15
15
16
16 - 17
18
19 - 20
21
21
21 - 22
23
24
24
24 - 25
INDEX
Summary of first maintenance operations.
Engine type.
PREFACE/GENERAL SERVICE MANUAL NOTE.
TECHNICAL FEATURES.
OVERALL DIMENSIONS.
BEFORESTARTING.
USE.
SAE CLASSIFICATION.
SAE GRADE.
LUBRICANT INTERNATIONAL SPECIFICATIONS.
ACEA REGULATION - ACEA SEQUENCES.
API / MIL SEQUENCES.
PRESCRIBED LUBRICANT.
LGA280-340ENGINESOILCAPACITY.
Fill crankcase with engine oil.
Refuelling.
RUN-IN.
BEFORESTOPPING.
MAINTENANCE.
AFTER THE FIRST 1.000 Km.
EVERY 1.000 Km.
Oil level check.
EVERY 5.000 Km.
Valve clearance check.
OPERATION TO BE CARRIED OUT AT 10.000 Km / 20.000 Km /
30.000 Km / 40.000 Km / 50.000 Km / 60.000 Km / 70.000 Km /
80.000 Km / 90.000 Km / 100.000 Km.
Air cleaner checking and cleaning.
Cooling system check.
Sparks plug check.
Check fuel pipes and unions.
(Not supplied by Lombardini.)
Check the exhaust system.
(Not supplied by Lombardini.)
Engine oil replacement.
Oil filter replacement.
OPERATION TO BE CARRIED OUT AT 20.000 Km/ 40.000 Km
60.000 Km /80.000 Km /100.000 Km.
Fuel filter replacement.
(Not supplied by Lombardini.)
Air filter cartidge replacement.

5
P. 26
27
27
27
28
28
28
29
30 -32
34 - 40
INDEX
ACCESSORY SET SUPPLIED WITH THE ENGINE Request if not supplied.
Replace the spark plug.
MAINTENANCETOBE CARRIED OUTATTHE SERVICE STATIONS.
EVERY 50.000 Km or 4 years.
Replacement of timing belt.
ENGINE STORAGE (NOT INSTALLED)
ENGINE STORAGE (INSTALLED)
PROTECTIVE TREATMENT
PREPARING THE ENGINE FOR OPERATIONAFTER
PROTECTIVE TREATMENT
TROUBLES
PART ORDERS / SPARE PARTS TABLE

6
ENGINE TYPE
r.p.m.
Rated power
Engine type
Serial number
Customer code (‘K’ No.)

7
PREFACE
Every attempt has been made to present within this service manual, accurate and up to date technical information. However, development on the Lombardini series is
continuos. Therefore, the information within this manual is subject to change without notice and without obligation.
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:
1 - The person or persons performing service work on Lombardini series engines is properly trained and equipped to safely and professionally perform the subject
operation;
2 - The person or persons performing service work on Lombardini series engines possesses adequate hand and Lombardini special tools to safely and professionally
perform the subject service operation;
3 - The person or persons performing service work on Lombardini series engines has read the pertinent information regarding the subject service operations and fully
understands the operation at hand.
GENERAL SERVICE MANUAL NOTES:
1- Use only genuine Lombardini spare parts. Failure to use genuine Lombardini parts could result in sub-standard performance and reduced engine life.
2- All data presented are in metric format. That is, dimensions are presented in millimeters (mm), torque is presented in Newton-meters (Nm), power in kilowatts (kW)
weight is presented in kilograms (Kg), volume is presented in liters or cubic centimeters (cc) and pressure is presented in barometric units (bar).

8
N.
mm
mm
cm³
n.
l.
l.
g/kW.h
Kg.
LGA 280 - 340 OHC
1
74
64
275
1
82
64
338
TECHNICAL FEATURES
WORKING CYCLE
CYLINDERS
BORE
STROKE
DISPLACEMENT
TIMING
LUBRICATION SYSTEM
COMPRESSION RATIO
R.P.M.
OIL CAPACITY ( WITH FILTER)
OIL CAPACITY (WITHOUT FILTER)
OIL CONSUMPTION
DRY WEIGHT
IGNITION SYSTEM
ELECTRIC STARTING
COOLING SYSTEM
SPARK PLUGS
The inlet and exhaust system must not be modified with reference to what prescribed by Lombardini when the version was approved; the engine
incorrect operation and the voidance of the warranty must be expected if they are submitted to any modification
Synchronized throught toothed belt
Fully forced by a trochoidal pump
8,0÷1
6200
1,7
1,6
0,8
30,5
Electronic
0,25 kW electric starter
Forced air
CHAMPION RC12YC
Petrol 4 Stroke

9
LGA
280
340
OHC
OVERALL
DIMENSIONS

10
BEFORE STARTING
Carefully read and follow all
instructions in this booklet as
well as all those provided with
the equipment on which this
engine is used.
Failure to do so will make
warranty void.
- The engine may bedamaged if operated with insufficient lubeoil. It is also dangerous to fill in too much oil to
theenginebecauseasudden increase in engine rpm could occur caused by itscombustion.Useproperlube
oilpreserveyour engine. Nothing affectsthe performance anddurabilityof your engine more thanthelube oil
you use. If inferior quality oil is used, or if your engine oil is not changed regularly, the risk of piston seizure,
pistonringsticking,and accelerated wear ofthecylinderliner,bearing and othermovingcomponentsincreases
significantly. Alwaysuse oilwiththe right viscosity for the ambienttemperaturein which your engine isbeing
operated . Use the chart on this page when chosing your engine oil.
- The used engine oil can cause skin-cancer if kept frequently in contact for prolonged periods. If contact
with oil cannot be avoided, wash carefully your hands with water and soap as soon as possible. Do not
disperse the oil in the ambient, as it has a high pollution power.
USE
SAE CLASSIFICATION
In the SAE classification, oils differ on the basis of their viscosity, and no other qualitative
characteristic is taken into account.
The first number refers to the viscosity when the engine is cold (symbol W = winter), while the
second considers viscosity with the engine at régime.
The criteria for choosing must consider, during winter, the lowest outside temperature to which
the engine will be subject and the highest functioning temperature during summer.
Single-grade oils are normally used when the running temperature varies scarcely.
Multi-grade oil is less sensitive to temperature changes.
SAE GRADE
* Mineral base ** Semi-synthetic base *** Synthetic base

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CF CE CD CC CB CA SA SB SC SD SE SF SG
L - 2104 D / E L - 46152 B / C / D / E
SH
API SJ SLCH-4 CG-4 CF-4 CF-2
MIL
LUBRICANT INTERNATIONALSPECIFICATIONS
They define testing performances and procedures that the lubricants need to successfully respond to in several engine testing and laboratory analysis
so as to be considered qualified and in conformity to the regulations set for each lubrication type.
A.P.I : (American Petroleum Institute )
MIL : Engine oil U.S. military specifications released for logistic reasons
ACEA : European Automobile Manufacturers Association
The following table is a useful reference when buying engine oil.
Codes are usually printed-out on the oil container and the understanding of their meaning is useful for comparing different brands and choosing the kind
with the right characteristics.
Usually a specification showing a following letter or number is preferable to one with a preceding letter or number.
An SF oil, for instance, is more performing than a SE oil but less performing than a SG one.
ACEAREGULATIONS -ACEASEQUENCES
API / MIL SEQUENCES
PETROL
A1= Low-viscosity, for frictions reduction
A2= Standard
A3 = High performances
HEAVY DUTY DIESEL ENGINES
E1 = OBSOLETE
E2 = Standard
E3 = Heavy conditions (Euro 1 - Euro 2 engines )
E4 = Heavy conditions (Euro 1 - Euro 2 - Euro 3 engines )
E5 = High performances in heavy conditions (Euro 1 - Euro 2 - Euro 3 engines )
OBSOLETE
DIESEL PETROL
CURRENT
LIGHT DUTY DIESEL ENGINES
B1= Low-viscosity, for frictions reduction
B2 = Standard
B3 = High performances (indirect injection)
B4= High quality (direct injection)

12
1,7
1,6
Nei paesi ove i prodotti AGIP non sono disponibili è prescritto olio per
motori con specifiche API SJ/CF oppure corrispondente alla specifica
militare MIL-L-46152 D/E.
OIL VOLUME AT MAX LEVEL WITH
OIL FILTER
OIL VOLUME TO THE MAX. LEVEL WITHOUT
OILFILTER
Litres
Litres
specifications
AGIP SINT 2000
15W40/50
API SJ/CF
ACEA A3-98 B3-98
MIL-L-46152 D/E.
PRESCRIBED LUBRICANT LGA 280 ENGINES OIL
CAPACITY
Fill crankcase with engine oil.
Oil filling and level inspections must be
carried out with the engine on a flat
surface.
Remove the oil dipstick and fill in the
recommended lubricating oil.

13
Refuelling.
To avoid explosions or fire outbreaks, do not smoke or use free flames during the operations.
Fuel vapours are highly toxic. Only carry out the operations outdoors or in a well ventilated
place.
Keep your face well away from the plug to prevent harmful vapours from being inhaled. Dispose
of fuel in the correct way and do not litter as it is highly polluting.
Use of other types of fuel could damage the engine.
Unleaded fuel must be used with a minimum of 95RON, it will avoid starting problems.
Do not use dirty diesel fuel or mixtures of diesel fuel and water since this would cause serious
engine faults.
- Fit the dipstick correctly back in place.
- Make sure that is nearly at max.
RUN -IN
During first 1500 Km do not exceed 70% of per-
formance.

14
Use only genuine Lombardini spare parts. Failure to use genuine Lombardini parts could
result in sub-standard performance and reduced engine life.
The non-observance of the operations described in the following pages can involve the risk of
technical damages to the machine and/or the installation.
Failure to do so will make warranty void.
MAINTENANCE
Engine oil replacement .
page 17
Oil filter replacement.
page 18
AFTER THE FIRST 1.000 KM.
BEFORE STOPPING
Run at idle speed for a few minutes.
Operation description.
Maintenance operations to carry out on
cold engine .

15
1.000 Km
5.000 Km
Every 1.000 Km
Oil level check.
If level is under the minimum, fill up.
Valve clearance check Using a thickness gauge, check that clearance
is 0.20 mm for the intake valve and 0.20mm for
the exhaust valve.
-The following operation must be
carried out on a cold engine.
- The piston must be positioned on its
TDC.
Every 5.000 Km

16
To clean the filter cartridge, tap it lightly and
repeatedly on a hard surface to eliminate
excessdirt. It is preferable to blow compressed
air lengthways through paper filter elements,
rather than crossways, and at a minimum
distance of 250 mm.
Air cleaner checking
and cleaning.
Open air cleaner and remove element .
OPERATIONS TO BE CARRIED
OUT AT
10.000 Km 20.000 Km
30.000 Km 40.000 Km
50.000 Km 60.000 Km
70.000 Km 80.000 Km
90.000 Km 100.000 Km
Always wear protective goggles if
compressed air is used.

17
Carefully clean the inside of the filter housing
and of the support. Next mount the new filter
element and housing.
If the filtering element is heavily clogged, it
must be replaced.
Useonlygenuine Lombardini spare parts.
Makesure that the filteris mounted in the
correct way otherwise dust and other
impurities could enter the intake ducts.

18
Remove the fixing screws and then remove the
air shroud.
Cooling system check.
Engine cooling efficiency is negatively affected
if the cooling fins of the cylinder and cylinder-
head are dirty: clean them with a brush soaked
in diesel fuel and blow by compressed air .

19
Spark plug check.
The spark plug must always be removed by
using the proper wrench when the engine is
cold to prevent damaging the cylinder head
threading.
Using a thickness gauge, make sure that the
distance between electrodes is 0,60 ÷ 0,70 mm.
Clean theelectrodeswithametalbrush(withbrass
bristles) and blow compressed air over them. If
the ceramic insulation is chipped or if the
electrodesarewornaway,replacethespark plug.

20
The spark plug should be screwed onto the
cylinder head initially by hand, and then
tightened to 20 Nm by means of a torque
wrench.