Introduction

INTRODUCTION

The instructions given in the following paragraphs refer to to the complete overhauling of the engine on the bench, after removing the power unit from the vehicle.

The instructions are sub-divided as follows:

• Engine dis-assembly: removing the engine accessories and components and dis- assembly into th main units forming it.
• Cylinder head dis-assembly and overhauling: complete overhauling of all the components of the heads.
• Crankcase overhauling: complete overhauling of the components of the cranking mechanisms.
• Instructions for re-assembly: these comprise the specific re-assembly operations which differ substantially from the dis-assembly instructions.
• Checking and inspecting the electric components of the lubricating circuit.

All the dis-assembly procedures described are valid in the reversed sequence for re-assembly, unless otherwise specified.

The following procedures refer to the complete overhauling of the whole engine, but it is possible to use them in part separately when required for specific components.

ENGINE DIS-ASSEMBLY

PRELIMINARY OPERATIONS

1. On the crankcase install the two brackets no. 320.145.000 (R.4.0178) for positioning the engine on the overhauling stand.

1. Raise the engine with the hydraulic lift and set it on the overhauling stand using support brackets no. 1.820.145.000 (R.4.0178).

REMOVING THE CLUTCH PLATE

1. Slacken the fastening screws and remove the pressure plate body.
2. Remove the clutch plate.