Preface

Structure

The "Technical Literture" for the "911 Carrera (993)" model is basically structured as before i.e. the structure follows the familiar repair groups.

A new feature is that the structure includes the main groups 0 to 9 and the main group D.

Layout

The layout in the below items remains unchanged throughout the repair manual

1. Table of tightening torques

2. Special tools required

4. Legends for the exploded views

5. Assembly notes / use of special tools

As a new feature, however, the former item 6 (Repair group diagnosis) is no longer filed in the volume corresponding to the respective repair group. The Diagnosis test plans / diagnosis procedures have been combined in a separate Diagnosis volume broken down according to the main groups 0 to 9.

Another new feature is that the contents of the "Service Information Technik" are indicated in the Repair Manual. This brochure concentrates on a description of the design and function of components and of the new features introduced for a particular model year.

Main groups:

Complete vehicle - General Engine

Fuel, exhaust, engine electrical system

Transmission

Chassis

Body

Body equipment, outside Body equipment, interior Air conditioning Electrical system Diagnosis

Service Number

All major repair procedures and repair descriptions are identified by a two- or four-digit Service Number completed by two additional digits to identify the work that corresponds to the first six digits of the working position number in the Working Times and Damage Catalog.

Example:

30 37 37 Dismantling and assembling clutch control shaft

Explanation: 30 37 37 50 (full working position number)

Repair group -'

here: Clutch, control

Component designation -

here: Clutch control shaft

here: Dismantling and assembling

Index -

here: Removed

Presentation in the various documents

30 37 37 50

30 37 37

30 37

Working position no. from

Working Times and Damage Catalog, consisting of repair group, component designation, activity and index Six-digit number in Repair Manual, consisting of repair group, component designation and activity

Service number in Service Information, consisting of repair group and component designation

Goal

The introduction of a service number in the "technical literature" is intended to facilitate standardization and positive identification to allow direct cross-referencing among the various documents. This is of particular importance with regard to the use of electronic media.

Structure of the Repair Manual

This Repair Manual describes all the important operations that require special instructions to ensure proper completion. This manual is an essential source of information for the shop foreman and the shop mechanics as the information in this manual must be observed at all times to keep the vehicle in safe and roadworthy condition. The basic safety rules of course also apply without exception to all

Breakdown of the Repair Manual

1. Overview of repair groups

2. Registration sheet for supplements

3. List of contents

4. Technical data

5. Repair groups

Breakdown of the repair groups

1. Table of tightening torques

2. Special tools required

3. Exploded views

4. Legends for the exploded views

5. Assembly notes / use of special tools

6. Diagnosis for repair groups

The Repair Manual will be updated regularly with supplements which must be filed immediately to maintain the usefulness of the manual. Appropriate entries must be made in the registration sheet to prove that the manual is complete.

The contents of the Repair Manual will be supplemented by Technical Information Bulletins which will be integrated into the manual from time to time.

Desciptions of design and function can be found in the service training course reference material.

Layout of the exploded view

DisTnaciping ûnfl nss«mollng cj-llfri^f nnfld

Apply a thin coat of Optimoly HT to cylinder head nut bearing surface

Valve collet Valve spring retainer Valve spring, outer Valve spring, inner Inlet valve Valve stem seal

Valve spring ring Washer Exhaust valve Valve guide, inlet Valve guide, outlet Thread insert Valve seat insert, inlet

Valve seat insert, exhaust Roll pin Cylinder head Studs M 8 x 22

Pressed in to stop

Fitted with Loctite 270. protruding length 23-0.5 mm. Screw studs with unmarked end into cylinder head (exhaust side)

A - Repair group, numbers B - Repair group, text C - Type of repair vehicle D - Page number

E - Operation, including "Service No." and "Title" F - Impressum, supplement number, year of printing G - Diagram item number in dismantling sequence H - Special notes for removal or installation

The assembly notes/Special Tool lists following the exploded view are always arranged in the order of text —> diagram.

Volume I:

General

Engine

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