Lombardini 11 LD 626-3 User Manual

11 LD 625-3
11 LD 626-3
11 LD series engines
cod. 1-5302-296_ 5° ed.
WORKSHOP MANUAL

Lombardini 11 LD 626-3 Specifications

General

Number of Cylinders	3
Bore	88 mm
Fuel System	Direct Injection
Lubrication System	Forced lubrication with gear pump
Governor Type	Mechanical
Engine Type	Diesel
Displacement	1869 cm³
Cooling System	Liquid-cooled
Max Power Output	20.3 kW @ 3000 rpm
Starting System	Electric starter

Summary

Registration of Modifications to the Document

Preface

Introduces the manual, its purpose, and assumptions about the user's knowledge.

Introduction

1 General Remarks and Safety Information

Warranty Certificate

Details the warranty terms and conditions for LOMBARDINI engines.

Safety Regulations

Outlines critical safety rules and precautions for engine operation and maintenance.

General Safety During Operating Phases

Details safety procedures and precautions to be followed during engine operation.

2 Technical Information

Possible Causes and Troubleshooting

Lists common engine problems, their potential causes, and troubleshooting steps.

Manufacturer and Motor Identification Data

Explains how to identify the engine model, serial number, and other key data from the nameplate.

Technical Specifications

Presents detailed technical specifications for the 11LD 625-3 and 11LD 626-3 engine types.

Performance Diagrams

Displays performance curves (power, torque, fuel consumption) for different engine models and speeds.

Overall Dimensions

Provides dimensional drawings and a table of key engine measurements in millimeters.

3 Maintenance - Prescribed Lubricant - Refilling

Routine Engine Maintenance

Outlines the schedule for ordinary and extraordinary maintenance tasks based on operating hours.

Lubricant

Covers SAE classification, international specs, and ACEA sequences for lubricants.

Fuel Specifications

Details fuel quality requirements, including cetane number, viscosity, and sulphur content.

4 Disassembly / Reassembly

Recommendations for Disassembling and Assembling

Provides general guidelines and safety precautions for disassembly and reassembly procedures.

Piston

Details piston removal, cleaning, measurement, and replacement criteria.

Crankshaft Removal

Details the procedure for removing the crankshaft.

Camshaft Removal

Details the procedure for removing the camshaft.

Valve Timing Check

Describes how to check valve timing using an index plate and dial gauge.

5 Lubrication System

Oil Pump

Details checks and specifications for the oil pump.

Oil Pressure Check

Explains how to check oil pressure after filling the engine.

Oil Pressure Curve at Full Speed

Shows the oil pressure curve at full speed versus temperature.

6 Fuel System

Fuel Feeding/Injection Circuit

Illustrates the fuel feeding and injection circuit components.

Injection Pump Replacement

Explains the procedure for replacing the injection pump.

Injector Setting

Explains how to connect and set the injector pressure.

Static Injection Timing

Details how to perform static injection timing.

7 Electric System

Standard Electric Equipment

Describes the standard electrical layout without a battery charging light.

How to Check Voltage Regulator for Proper Operation

Explains how to check the voltage regulator for proper operation.

Starting Motor Layout

Illustrates the starting motor layout and its functions.

8 Settings

Injection Pump Delivery Setting

Explains how to set the injection pump delivery.

Stop Setting

Details the procedure for setting the engine stop.

I Advance Variator Operating Principle

Injection Timing Device Operation

Explains the operation of the variable injection timing device.

II Disassembly / Reassembly

Solenoid Valve Assembly Diagram

Illustrates the solenoid valve assembly and lists its components.

Speed Sensor and Variator Assembly Diagram

Illustrates the speed sensor and variator assembly.

Phase Sensor Assembly Diagram

Illustrates the phase sensor assembly and its adjustment.

13 Storage

Storage

Outlines procedures for protecting engines not used for over 3 months.

Procedures to be Carried Out Before Start the Engine

Lists steps to perform before starting an engine that has been in storage.

14 Main Torque Specifications and Use of Sealants

Main Torque Specifications

Lists torque specifications for various engine components.

Table of Tightening Torques for Standard Screws (Coarse Thread)

Provides torque values for standard screws based on size and resistance class.

Special Tools

Special Tools

Lists special tools required for engine maintenance and repair with their part numbers.