• AS 1973-1993

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    Pneumatic tyres - Passenger car, light truck, and truck/bus - Retreading and repair processes

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English

    Published date:  11-14-1993

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    1 - AS 1973-1993 PNEUMATIC TYRES - PASSENGER CAR, LIGHT TRUCK, AND TRUCK/BUS - RETREADING AND REPAIR PROCESS
    4 - PREFACE
    5 - CONTENTS
    7 - SECTION 1 SCOPE AND GENERAL
    7 - 1.1 SCOPE
    7 - 1.2 APPLICATION
    7 - 1.3 REFERENCED DOCUMENTS
    7 - 1.4 DEFINITIONS
    8 - 1.4.1 Asymmetric tyres
    8 - 1.4.2 Bead
    8 - 1.4.3 Bead area
    8 - 1.4.4 Bead toe
    8 - 1.4.5 Belts
    8 - 1.4.6 Belt edge cover ply
    8 - 1.4.7 Bias ply tyre
    8 - 1.4.8 Breakers
    8 - 1.4.9 Buffing
    8 - 1.4.10 Building
    8 - 1.4.11 Camelback tread rubber
    8 - 1.4.12 Carcass
    8 - 1.4.13 Carcass ply
    8 - 1.4.14 Carcass separation
    8 - 1.4.15 Casing
    8 - 1.4.16 Cement
    8 - 1.4.17 Cementing
    8 - 1.4.18 Chafer
    8 - 1.4.19 Cords
    8 - 1.4.20 Cross ply tyre
    8 - 1.4.21 Crown
    8 - 1.4.22 Curing
    9 - 1.4.23 Cushion gum
    9 - 1.4.24 Diagonal ply tyre
    9 - 1.4.25 Fullcapping
    9 - 1.4.26 Heel
    9 - 1.4.27 Inner-liner
    9 - 1.4.28 Light truck tyres
    9 - 1.4.29 Limited-run-flat tyres
    9 - 1.4.30 Load index
    9 - 1.4.31 Major repair
    9 - 1.4.32 Maximum load rating
    9 - 1.4.33 Minor repair
    9 - 1.4.34 Mushroom plug
    9 - 1.4.35 Optional
    9 - 1.4.36 Patch
    9 - 1.4.37 Ply
    9 - 1.4.38 Ply rating
    10 - 1.4.39 Precured retreading
    10 - 1.4.40 Protective breaker / Protective belt / Protective ply
    10 - 1.4.41 Radial ply tyre
    10 - 1.4.42 Rebelting
    10 - 1.4.43 Remoulding
    10 - 1.4.44 Retreading
    10 - 1.4.45 Service description
    10 - 1.4.46 Shall
    10 - 1.4.47 Should
    10 - 1.4.48 Shoulder
    10 - 1.4.49 Sidewall
    10 - 1.4.50 Sidewall rubber
    10 - 1.4.51 Skiving
    10 - 1.4.52 Speed category
    10 - 1.4.53 Structural belt
    10 - 1.4.54 Topcapping
    10 - 1.4.55 Tread
    10 - 1.4.56 Tread pattern depth
    10 - 1.4.57 Tread rubber
    10 - 1.4.58 Tread separation
    10 - 1.4.59 Tread wear indicator
    10 - 1.4.60 Tubeless tyre
    11 - 1.4.61 Undertread
    11 - 1.4.62 Venting
    11 - 1.4.63 Winter tread
    13 - SECTION 2 INITIAL INSPECTION OF TYRES
    13 - 2.1 GENERAL
    13 - 2.2 INSPECTION OF TYRES BEFORE RETREADING OR REPAIR
    13 - 2.3 SPEED LIMITED TYRES
    14 - SECTION 3 RETREADING
    14 - 3.1 GENERAL
    14 - 3.1.1 Use of materials
    14 - 3.1.2 Buffing
    14 - 3.1.3 Inspection after buffing
    14 - 3.1.4 Buffing damage
    14 - 3.1.5 Rebelting of radial ply truck / bus tyres
    14 - 3.1.6 Repairs
    15 - 3.1.7 Cementing
    15 - 3.1.8 Building
    15 - 3.1.9 Curing
    15 - 3.1.10 Radial ply tread patterns on diagonal ply passenger car tyres
    16 - 3.1.11 Venting
    16 - 3.1.12 Inspection after curing
    16 - 3.1.13 Final inspection
    16 - 3.2 DIMENSIONAL AND PHYSICAL REQUIREMENTS
    16 - 3.2.1 Rubber under the tread pattern
    16 - 3.2.2 Tread wear indicators
    16 - 3.2.3 Balance
    16 - 3.3 ADHESION REQUIREMENT
    16 - 3.4 SPEED CATEGORIES FOR RETREADED TYRES
    17 - SECTION 4 REPAIR TECHNIQUES
    17 - 4.1 ENVIRONMENTAL CONDITIONS
    17 - 4.2 REPAIR MATERIALS
    17 - 4.3 REPAIR PRINCIPLES
    17 - 4.3.1 General principles
    18 - 4.3.2 Preparation of damage for repairing
    18 - 4.3.3 Minor repair principles
    18 - 4.3.4 Major repair principles
    18 - 4.4 MEASUREMENT OF DAMAGE
    18 - 4.4.1 General
    18 - 4.4.2 Diagonal ply tyres
    18 - 4.4.3 Radial ply tyres-Crown and shoulder damage
    18 - 4.4.4 Radial ply tyres-Sidewall damage
    18 - 4.5 CURING
    18 - 4.5.1 General
    19 - 4.5.2 Hot-curing
    19 - 4.5.3 Cold curing (chemical)
    20 - 4.6 INSPECTION AFTER CURING
    20 - 4.6.1 Visual inspection of repair
    20 - 4.6.2 Inspection of repair marking
    21 - SECTION 5 REPAIR LIMITS FOR PASSENGER CAR TYRES
    21 - 5.1 GENERAL
    21 - 5.2 PASSENGER CAR TYRE REPAIR CLASSIFICATION
    21 - 5.2.1 Minor repairs
    21 - 5.2.2 Major repairs
    21 - 5.3 IRREPARABLE DAMAGE
    21 - 5.4 REPAIR LIMITS
    23 - SECTION 6 REPAIR LIMITS FOR LIGHT TRUCK TYRES
    23 - 6.1 GENERAL
    23 - 6.2 LIGHT TRUCK TYRE REPAIR CLASSIFICATIONS
    23 - 6.2.1 Minor repairs
    23 - 6.2.2 Major repairs
    23 - 6.3 IRREPARABLE DAMAGE
    23 - 6.4 REPAIR LIMITS
    26 - SECTION 7 REPAIR LIMITS FOR RADIAL PLY TRUCK/BUS TYRES
    26 - 7.1 GENERAL
    26 - 7.2 RADIAL PLY TRUCK/BUS TYRE REPAIR CLASSIFICATIONS
    26 - 7.2.1 Minor repairs
    26 - 7.2.2 Major repairs
    26 - 7.3 IRREPARABLE DAMAGE
    26 - 7.4 REPAIR LIMITS
    28 - SECTION 8 REPAIR LIMITS FOR DIAGONAL PLY TRUCK/BUS TYRES
    28 - 8.1 GENERAL
    28 - 8.2 DIAGONAL PLY TRUCK/BUS TYRE REPAIR CLASSIFICATIONS
    28 - 8.2.1 Minor repairs
    28 - 8.2.2 Major repairs
    28 - 8.3 IRREPARABLE DAMAGE
    28 - 8.4 REPAIR LIMITS
    29 - SECTION 9 MARKING
    29 - 9.1 MARKING OF RETREADED TYRES
    29 - 9.1.1 Marking on one side
    29 - 9.1.2 Marking on both sides
    30 - 9.1.3 Method and position of marking
    30 - 9.1.4 Sidewall marking of asymmetric tyres
    30 - 9.1.5 Removal of marking
    30 - 9.1.6 Identification of the number of retreads
    30 - 9.2 MARKING OF REPAIRED TYRES
    31 - APPENDIX A - ADHESION TEST FOR NEW TREAD RUBBER ONTO THE TYRE CARCASS
    31 - A1 SCOPE
    31 - A2 PRINCIPLE
    31 - A3 APPARATUS
    31 - A4 TEST SPECIMENS
    32 - A5 PRECONDITIONING
    32 - A6 TEST CONDITIONS
    32 - A7 PROCEDURE
    35 - A8 REPORT

    Abstract - (Show below) - (Hide below)

    Sets out a Code of Practice for the retreading of pneumatic diagonal and radial ply tyres including requirements for initial inspection, processing, marking and final inspection. Also sets out requirements for in-service repairs to tyres and repairs made in conjunction with the retreading process.

    Scope - (Show below) - (Hide below)

    This Standard sets out a code of practice for the retreading of pneumatic diagonal and radial ply tyres, including requirements for initial inspection, processing, marking and final inspection. It also sets out requirements for in-service repairs to tyres and repairs made in conjunction with the retreading process.NOTES:1 It is a fundamental requirement of this Standard that all retreaded tyres be marked to identify the retreader, and that all repairs be identified and marked by the repairer (which may be a retreader where the tyre is repaired concurrently with retreading) (see Section 9).2 Temporary repairs including the use of externally applied plugs or liquid puncture sealants are not included in this Standard.This Standard is intended to be used by repairers and retreaders of passenger car, light truck, and truck/bus tyres intended primarily for on-road use (see Note). Unless otherwise specified, the requirements apply to both tube type and tubeless tyres but do not permit major repairs in passenger car tyres of speed category 'V', or higher. This Standard does not apply to pneumatic tyres or tyre/wheel assemblies of the 'limited-run-flat' type, the temporary spare, or moped and motorcycle tyres, or to tyres designed primarily for earthmoving, agricultural, industrial, or aviation application.NOTE: The tyres covered by this Standard are those listed in The Tyre and Rim Association of Australia Standards Manual (Passenger, Truck/Bus Section), or in the equivalent sections of the following documents of overseas organizations:(a) The Tyre and Rim Association, Year Book.(b) The Japan Automobile Tyre Manufacturers Association, Year Book.(c) The European Tyre and Rim Technical Organization, Standards Manual.

    General Product Information - (Show below) - (Hide below)

    Committee ME/56
    Development Note Standard has been given Pending Revision status.
    Document Type Standard
    Product Note Pending Revision indicates that as a result of the Aged Standards review process, the document needs updating. If no project proposal, meeting the quality criteria, is received within the 12 month timeframe, the document shall be withdrawn.
    Publisher Standards Australia
    Status Current
    Supersedes

    History - (Show below) - (Hide below)

    First published as AS 1973-1976.Second edition 1985.Third edition 1993. First published as AS 1973-1976. Second edition 1985. Third edition 1993.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS 3802-1989 Data elements and interchange formats - Information interchange - Representation of dates and times
    AS/NZS 3889:1993 Rubber and plastics - Analysis of multi-peak traces obtained in determinations of tear strength and adhesion strength
    AS/NZS 3802:1997 Data elements and interchange formats - Information interchange - Representation of dates and times
    AS 1680.2.0-1990 Interior lighting Recommendations for specific tasks and interiors
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