Introduction

INTRODUCTION

The instructions given in the following paragraphs refer to the complete overhaul of the engine on a bench after removal from a vehicle.

The instructions are divided as follows:

• Disassembly and reassembly of engine: removal of the engine accessories and components and dis-assembly into its main component parts.
• Disassembly and overhaul of cylinder heads: complete overhaul of all the components of the cylinder heads.
• Engine block checks and inspections: complete overhaul of the components of the crank mechanisms.
• Precautions for refitting: comprising the refit operations where they significantly differ from the disassembly instructions.

Il the disassembly procedures described in the part which follows, when carried out in the reverse order, are also valid for refitting purposes unless otherwise indicated.

• Checks and inspections of the lubrication system electrical components: checks and controls of the electrical components relative to the engine lubrication system.

The procedures which follow refer to the complete overhaul of the whole engine unit; it is however possible to use individual parts of these instructions when dealing with specific components.

ENGINE DIS-ASSEMBLY

Preliminary operations

1. Set the assembly on a special overhauling stand using supports brackets N° 1.820.145.000 (R.4.0178).

Removal of clutch plate

1. Remove the disk pressure plate body.
2. Remove the clutch disk.

Removal of timing belt

• Install a suitable tool on the flywheel which will allow the crankshaft to rotate..

1. Remove the oil vapour recirculation sleeve.

Removal of timing belt cover

1. Remove the timing belt cover.