Lombardini LDW 502 User Manual

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FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06
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178
179
181
180
Injector, setting (old type)
Connect the injector to a hand pump after removing cap screw 20
fig. 169.
By means of the tool - se.no. 7107-1460-028 - check that the
setting pressure is 130÷145 bar.
Adjust, if necessary, by changing the spacer located under the
spring.
There are eleven different spare part spacers from 1 to 2 mm.
When you replace the spring, the setting should be made at a
pressure higher than 10 bar to compensate for adjustments in
operation.
Check the needle seal by slowly actuating the hand pump for 10
seconds, until you reach abt. 130 bar.
If the nozzle drips, replace it.
Injector, spark arrester
Every time you remove the pump/injector you must replace the
spark arrester, the copper gasket, the oil O-ring, as well as the 2 fuel
O-rings.
Insert the spark arrester in the injector housing with surface A
pointing upwards.
 Tighten simultaneously both nuts that fasten it to the head at 20
Nm.
For engines with the injectors fixed with self-locking nuts, tighten
the nuts at 23 Nm.
 See page 24 for periodic maintenance details.
Injector, nozzle projection
To avoid excessive compression of the spark arrester A, fig. 181,
check projection B of the nozzle fig. 179.
B = 6.80÷7.05 mm.
If this measure is larger put spacer 2 between ring nut 1 and copper
gasket 3.
0.25 mm thick spacers are available.
Setting of injector according to current pump/injector unit
Remove the non-return valve leaving its metal gasket and fit a cap
screw in its place, that is part of tooling 7107-1460-074.
Mount then head 1 and coupling 2.
Then connect a hand pump as shown in the picture.
The pressure setting must be 140÷155 mm bar.
Fuel system

Lombardini LDW 502 Specifications

General

Engine Type	Diesel, 4-stroke
Number of Cylinders	2
Fuel System	Indirect injection
Starting System	Electric start
Lubrication System	Forced lubrication with gear pump
Bore x Stroke	72 mm x 62 mm
Cooling System	Air-cooled
Displacement	505 cm³ (30.8 cu in)

Summary

General Remarks and Safety Information

Safety and Warning Decals

Explains the meaning of symbols used for safety warnings.

Safety Regulations

Lists critical safety rules for engine operation and general precautions.

General Safety During Operating Phases

Outlines safety procedures to follow during engine operation.

Technical Information

Trouble Shooting

Guides users through diagnosing and resolving engine issues.

Technical Specifications

Provides detailed technical data and specifications for various engine models.

Maintenance - Recommended Oil Type - Refilling

Routine Engine Maintenance

Outlines the schedule for regular engine servicing and checks.

Lubricant and Specifications

Prescribed Lubricant

Specifies the exact types and capacities of lubricants required for the engine.

Fuel and Coolant Specifications

Details required fuel quality and coolant types, mixtures, and handling.

Disassembly / Reassembly

Timing Belt / Timing Pulley Arrangement

Illustrates the timing belt and pulley system for correct engine timing.

Cylinder Head, Removal

Details the procedure for safely removing the cylinder head from the engine block.

Turbocharger

Turbocharger Pressure Testing

Details the procedure for testing turbocharger pressure for proper function.

Turbocharger West Gate Adjustment

Explains how to adjust the turbocharger's waste gate for optimal performance.

Lubrication Circuit

Oil Pump

Describes the function and components of the engine's oil pump.

Oil Filter Cartridge

Oil Pressure Check

Fuel System

Pump/Injector Unit Components

Static Injection Advance Tuning

Injection Pumps Delivery Balancing

Settings

Setting the Idle Speed (Standard)

Pump Injection Delivery Standard Setting Without Dynamometric Brake

Pump/Injector Unit Timing with Speed Governor

Torque Specifications and Use of Sealant

Table of Tightening Torques for the Main Components