Lombardini LDW 502 User Manual

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FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06
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SPEED SETTINGS
Setting the idle minimum (standard)
After filling the engine with oil, fuel and coolant, start it and let it
warm up for 10 minutes.
Turn the screw 1 to adjust the idle speed at 850 to 900 rpm.
Tighten then the locknut.
Note: If you loosen screw 1 speed decreases. To the opposite
direction speed increases.
Setting the idle maximum (standard)
After setting the idle speed turn screw 2 and regulate the idle
maximum at 3800 rpm.
Block then the locknut.
When the engine reaches its setting power, the maximum rpm will
stabilise at 3600 rpm.
Note: If you loosen screw 2 speed increases.
To the opposite direction speed decreases.
Pump injection delivery standard setting without
dynamometric brake
This adjustment must be performed with the dynamometric braked
engine.
Without this the regulation is approximate.
In this case proceed as follows:
-Unlock the maximum flow limiter lock nut.
-Fully screw in flow limiter C.
-Run the engine to the maximum speed, that is 3800 rpm.
-Loosen flow limiter C until the engine revs start to decrease.
-Screw flow limiter C by 2.5 turns.
-Tighten the lock nut.
Note: If the engine under maximum load emits too much smoke
unscrew C. Tighten C if at this load there is no smoke and if
the engine does not reach its maximum power.
SETTINGS

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