Standard
Track updates
AS/NZS 4968.2:2023
[Current]AS/NZS 4968.2:2023 specifies performance requirements and recommendations for the installation of fifth wheel assemblies used with 50 mm, 75 mm and 90 mm kingpins for articulated vehicle combinations used in heavy road vehicles, B-doubles and road trains, in normal use on both sealed and unsealed roads
Published: 23/06/2023
Pages: 18
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 New designs and innovations
5 Mounting
5.1 Position and height
5.2 General method of mounting
5.3 Method of mounting a fifth wheel to a prime mover
5.4 Method of mounting a fifth wheel to a trailer or dolly
6 Strength
6.1 Design
6.2 Fastening of assembly (including fishplates) to vehicle chassis
6.3 Vehicle chassis suitability
6.4 Bolting requirements
6.5 Clearance to top of chassis side member flange
6.6 Clearance around suspension mountings
7 Turntable base fifth wheels
7.1 General
7.2 Turntable lock
7.3 Sliding assemblies
7.4 Attachment brackets
7.5 Slide stops
7.6 Locking of slide plate on slide rail
8 Practices not recommended
9 Fifth wheel assembly rating
10 Test performance
11 Functional and dimensional requirements
11.1 Functional
11.2 Dimensional
Appendix A
A.1 Scope
A.2 Principle
A.3 Apparatus
A.4 Procedure
A.4.1 Inspection before testing
A.4.2 Installation of assembly
A.4.3 Application of loading
A.4.4 Inspection after testing
A.5 Test report
Appendix B
B.1 Scope
B.2 Principle
B.3 Apparatus
B.4 Procedure
B.4.1 Inspection before testing
B.4.2 Installation of assembly
B.4.3 Application of loading
B.4.4 Inspection after testing
B.5 Test report
Bibliography
Cited references in this standard
[Current]
Heavy road vehicles — Mechanical coupling between prime movers and semitrailers — Interchangeability requirements, Part 1: Non-dedicated vehicle combinations
[Current]
Heavy road vehicles — Mechanical coupling between prime movers and semitrailers — Interchangeability requirements, Part 2: Dedicated vehicle combinations
[Current]
Heavy road vehicles — Mechanical coupling between articulated vehicle combinations, Part 1: Design criteria and selection requirements for fifth wheel, kingpin and associated equipment
[Current]
Heavy road vehicles — Mechanical coupling between articulated vehicle combinations, Part 3: Kingpins and associated equipment