AS 1973-1993

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