Introduction

INTRODUCTION

The instructions contained in the following paragraphs refer to complete engine bench overhaul after removing the engine from the vehicle. The instructions are organised as follows:

• Engine removal: removal of engine accessories and components and disassembly of the main engine assemblies.
• Cylinder head disassembly and overhauling: complete overhauling of component parts.
• Crankcase overhauling: complete overhauling of component parts.
• Refitting precautions: specific refitting operations which mainly differ from the removal instructions.
• Lubrication electrical circuit checks.

All the disassembly procedures described in the following paragraphs should be reversed for refitting, unless specifically indicated.

The following procedures refer to complete engine overhauling. Some procedures, however, can be used separately for some parts only when required for specific components.

SINGLE ENGINE UNIT BELT REMOVAL

• Loosen the single engine unit belt by means of a wrench on the automatic belt take-up device.

1. Remove the single engine unit belt.

ENGINE REMOVAL

PRELIMINARY OPERATIONS

• Position the engine on a stand with common suitable tools.

NOTE: Tool no. 1.861.001.139 can be used to support the engine on the overhaul stand.

1. Loosen the fastening screw and remove the single engine unit belt runner.
2. Loosen the fastening screws and remove the engine tie-rod bracket.