Standard
Track updates
AS 4457.2-2008
[Pending Revision]Earth-moving machinery — Off-the-road wheels, rims and tyres — Maintenance and repair, Part 2: Tyres
Sets out requirements for the inspection, retreading, repair and maintenance of off-the-road tyres fitted to wheel assemblies or rim assemblies of not less than 600 mm nominal diameter.
Published: 12/03/2008
Pages: 23
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
1 Scope and general
1.1 Scope
1.2 Objective
1.3 Referenced documents
1.4 Definitions
2 Maintenance of in-service tyres (Practical maintenance)
2.1 Selection of tyre
2.2 Mounting inspection
2.3 Periodic inspection
2.4 Handling, transport and storage
3 Inspection to determine repairability
3.1 General
3.2 Internal inspection
3.3 External inspection
4 Repair limits
4.1 General
4.2 Repair limits for bias ply tyres
4.2.1 Minor repairs
4.2.2 Intermediate repairs
4.2.3 Major repairs
4.3 Irrepairable damage to bias ply tyres
4.4 Number of repairs to bias ply tyres
4.5 Repair limits for radial ply tyres
4.5.1 Minor repairs
4.5.2 Intermediate repairs
4.5.3 Major repairs
4.6 Irrepairable damage to radial ply tyres
4.7 Number of repairs to radial ply tyres
4.8 Disposal of irrepairable tyres
5 Repair of tyres
5.1 General
5.2 Repair principles
5.2.1 General principles
5.2.2 Preparation of damage for repairing
5.2.3 Minor repair principles
5.2.4 Intermediate repair principles
5.2.5 Major repair principles
5.3 Measurement of damage
5.3.1 General
5.3.2 Bias ply tyres
5.3.3 Radial ply tyres—Crown and shoulder damage
5.3.4 Radial ply tyres—Sidewall damage
5.4 Damage area preparation
5.5 Patch application
5.6 Curing
5.6.1 General
5.6.2 Hot-curing
5.6.3 Hot cure of tread/sidewall repair rubber and reinforcing patch simultaneously
5.6.4 Hot cure repair rubber (plug)/cold (chemical) cured patch system
5.6.5 Cold curing (chemical) patch application
5.7 Inspection after curing
5.7.1 Visual inspection of repair
5.7.2 Final inspection
6 Retreading of tyres
6.1 General
6.1.1 Restrictions
6.1.2 Use of materials
6.1.3 Buffing
6.1.4 Inspection after buffing
6.1.5 Buffing damage
6.1.5.1 Bias ply tyres
6.1.5.2 Radial ply tyres
6.1.6 Repairs
6.1.7 Cementing
6.1.8 Building
6.1.9 Curing
6.1.10 Inspection
6.2 Dimensional and physical requirements
6.2.1 Undertread gauge
6.2.2 Tread wear indicators
6.2.3 Load and speed index for retreaded tyres
7 Marking of repaired and retreaded tyres
7.1 Repaired tyre identification
7.2 Single (X) marking
7.3 Double (XX) marking
7.4 Triple (XXX) marking
7.5 Retreaded tyre identification
8 Maintenance of tyres (Service records)
8.1 Recording
8.2 Service record
8.3 Recorded history
8.4 Repairs and retreading
8.5 Transfer to another user
8.6 Replacement of tyre identification
Appendix A
Appendix B
Cited references in this standard
[Pending Revision]
Earth-moving machinery — Off-the-road wheels, rims and tyres — Maintenance and repair, Part 1: Wheel assemblies and rim assemblies
Content history
DR 07130
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