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Hatz 2-4L31 User Manual

Hatz 2-4L31
174 pages
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Workshop manual
2-4L30.
H2-3L30.
2-4L31.
2-4L40.
2-4L41.
2-4M31.
2-4M40.
2-4M41.
438 402 00 - 1.97 - 0.4 Printed in Germany

Table of Contents

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Hatz 2-4L31 Specifications

General IconGeneral
BrandHatz
Model2-4L31
CategoryEngine
LanguageEnglish

Summary

Introduction

1. General

Engine Illustrations

Detailed diagrams labeling engine components from various views.

Type Plate Data

Explanation of information found on the engine's type plate.

Lubricating Oil Circuit

Diagram and description of the engine's lubricating oil system.

Technical Data L30

Specifications for L30 engine variants.

Technical Data L31, M31, L40, M40

Specifications for L31, M31, L40, M40 engine variants.

Technical Data L41, M41

Specifications for L41, M41 engine variants.

Sealants and Adhesives

List of sealants and adhesives with code letters for use in manual.

Special Tools and Workshop Equipment

Listing and identification of specialized tools for engine maintenance.

2. Additional Equipment

Fuel

Detailed information on the fuel delivery pump.

Exhausts

Procedures for removing and installing the silencer (muffler).

Mechanical Starting

Instructions for using and maintaining the crank handle.

Electric Starting

General instructions and checks for the engine's electrical system.

Lubricating Oil Air-Cooled Engines

Procedures for servicing air-cooled engine oil coolers.

Lubricating Oil Water-Cooled Engines

Procedures for servicing water-cooled engine oil coolers.

Automatic Mechanisms

Details on the engine shutdown solenoid mechanism.

Housing

Instructions for assembling the connecting housing.

Liquid Cooling Water Pump

Procedures for removing and installing the water pump.

Liquid Cooling Thermostat

Instructions for checking and installing the thermostat.

3. Basic Engine

Crankcase

Procedures for removing/installing balancing weights on 2L/3L engines.

Crankshaft

Steps for dismantling the crankshaft assembly.

Camshaft

Procedures for camshaft and valve gear removal and installation.

Conrod

Instructions for checking and assembling connecting rods.

Piston and Cylinder Air-Cooled Engines

Procedures for checking cylinder wear and suitability for reuse.

Piston and Cylinder Water-Cooled Engines

Procedures for dismantling and inspecting pistons/cylinders in water-cooled engines.

Cylinder Head Air-Cooled Engines

Procedures for dismantling the cylinder head on air-cooled engines.

Cylinder Head Overhauling Air-Cooled Engines

Steps for overhauling the cylinder head on air-cooled engines.

Cylinder Head Water-Cooled Engines

Procedures for dismantling the cylinder head on water-cooled engines.

Oil Pump

Procedures for dismantling and assembling the engine oil pump.

Timing Cover

Procedures for dismantling the timing cover without hydraulic pump drive.

Extra-Fuel Device

Dismantling and assembly of the hydraulic extra-fuel device.

Fan

Procedures for removing and installing the fan housing.

Fuel Injection Equipment

Procedures for checking injection pumps and performing functional tests.

Flywheel

Procedures for dismantling and assembling the flywheel.

Engine Shutdown Device / Belt Tensioner

Procedures for removing and installing the engine shutdown device.

Air Cleaner

Procedures for dismantling and cleaning the engine air cleaner.

Crankcase Breather

Procedures for dismantling and inspecting the crankcase breather.

Speed Control Engines with PFR 1K 80 Injection Pump

Procedures for dismantling the speed control with PFR 1K 80 injection pump.

Speed Control Engines with PFR 1K 90 Injection Pump

Procedures for dismantling the speed control.

Enclosure

Procedures for dismantling the engine enclosure.

4. Tables

Tightening Torques for Threaded Connections

General requirements and values for tightening threaded connections in Nm.

Repair Data

Repair specifications for cylinder head components.

Fuel Injection Equipment

Tables for engine types, injection pumps, and injector specifications.

Governors

Tables detailing governor springs and weights by engine type and speed.

Lubricating Oil Content and Dipstick

Table for engine oil sump capacity and dipstick markings.

Key to Circuit Diagrams

List of electrical components and their designations in circuit diagrams.

HATZ - Wiring Identification

Table mapping terminal numbers to component designations for wiring.

Circuit Diagrams

Electrical circuit diagrams for 12V and 24V systems with various functions.

Trouble-shooting Table for Electrical System

Troubleshooting guide for electrical system malfunctions and remedies.

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