Motor Vehicles (Standards) Regulations - Australian Vehicle Standards Rules

A kingpin used in a B-double or road train must:

be a 50, 75 or 90 millimetre kingpin; and

have a D-value complying with Australian Standard AS 2175-1990

Articulated Vehicles–Kingpins.

A 50 or 90 millimetre kingpin used in a B-double or road train must:

be built to meet the dimension requirements in Australian

Standard AS 2175-1990 Articulated Vehicles–Kingpins; and

not be worn away more than recommended by the standard.

A 75 millimetre kingpin used in a B-double or road train must:

be built to meet the dimensions in the following essential diagram; and

not be worn away more than mentioned in subrule (4).

Dimensions of a 75 millimetre kingpin

In testing a 75 millimetre kingpin mentioned in the essential diagram in subrule (3) to decide whether its D-value complies with subrule (1)(b):

diameter F must not wear more than 3 millimetres; and

diameter G must not wear more than 2 millimetres; and

height H must not wear more than 2.3 millimetres.