sch.3-sec.22Selection of fifth wheel couplings and turntables for B-doubles and road trains

sch.3-sec.22 Selection of fifth wheel couplings and turntables for B-doubles and road trains

A fifth wheel coupling used in a B-double or road train must have a D-value complying with AS 1773-1990 ‘Articulated Vehicle—Fifth Wheel Assemblies’. A turntable used in a B-double or road train must have a D-value complying with AS 1773-1990 ‘Articulated Vehicle—Fifth Wheel Assemblies’. If a fifth wheel coupling used in a B-double or road train is built for a 50mm kingpin or 90mm kingpin, the coupling must— meet the dimension requirements in AS 1773-1990 ‘Articulated Vehicle—Fifth Wheel Assemblies’; and not be worn away more than recommended by the standard. If a fifth wheel coupling used in a B-double or road train is built for a 75mm kingpin, the coupling must— be compatible with a kingpin built as required by section 25 (3) (a) ; and not be worn so that it does not comply with subsection (5) . In testing a fifth wheel coupling used in a B-double or road train and built for a 75mm kingpin to decide whether its D-value complies with subsection (1) , the longitudinal movement, after readjusting the jaws of the coupling using a kingpin built as required by section 25 (3) (a) , must not be more than 4mm. (sch.3-sec.22-ssec.1) A fifth wheel coupling used in a B-double or road train must have a D-value complying with AS 1773-1990 ‘Articulated Vehicle—Fifth Wheel Assemblies’. (sch.3-sec.22-ssec.2) A turntable used in a B-double or road train must have a D-value complying with AS 1773-1990 ‘Articulated Vehicle—Fifth Wheel Assemblies’. (sch.3-sec.22-ssec.3) If a fifth wheel coupling used in a B-double or road train is built for a 50mm kingpin or 90mm kingpin, the coupling must— meet the dimension requirements in AS 1773-1990 ‘Articulated Vehicle—Fifth Wheel Assemblies’; and not be worn away more than recommended by the standard. (sch.3-sec.22-ssec.4) If a fifth wheel coupling used in a B-double or road train is built for a 75mm kingpin, the coupling must— be compatible with a kingpin built as required by section 25 (3) (a) ; and not be worn so that it does not comply with subsection (5) . (sch.3-sec.22-ssec.5) In testing a fifth wheel coupling used in a B-double or road train and built for a 75mm kingpin to decide whether its D-value complies with subsection (1) , the longitudinal movement, after readjusting the jaws of the coupling using a kingpin built as required by section 25 (3) (a) , must not be more than 4mm.

• (a) meet the dimension requirements in AS 1773-1990 ‘Articulated Vehicle—Fifth Wheel Assemblies’; and
• (b) not be worn away more than recommended by the standard.
• (a) be compatible with a kingpin built as required by section 25 (3) (a) ; and
• (b) not be worn so that it does not comply with subsection (5) .