TABLE III. Semitrailer specification (continued).
Valve - Release, Spring Brake.
High speed type providing selective reservoir changing, spring
brake parking application emergency application and
Air Line Coupler - Service and Emergency Gladhands per
SAE J318, color coded yellow for control (service) on curbside,
and color coded red for supply (emergency) on roadside.
ID tags and captive chained manual gladhand dust covers.
Spring load gladhand covers to prevent falling below the upper
Gladhand location, 2-ea. on front of semitrailer per TMC-ATA
RP-703 and SAE-J702
All welded construction having steel framing members or
aluminum framing members.
Frame type chassis furnished with the main frame longitudinal
members of the continuous type. Frameless type chassis
furnished with articulating elevating arms locating the kingpin
and running gear under the body within industry tolerances.
Unless otherwise specified, provide flexibly sprung, suspension
of the equalizing type having min. 22,000 lb. per axle rating.
When specified (see 6.2), provide an air suspension system
having min. 20,000 lb. per axle rating.
Provide single (1-axle), tandem (2-axle), or tandem (3-axle) as
specified herein and in the applicable dump semitrailer
Provide stabilized ride for loaded semitrailers with a high center
of gravity without hazardous handling and provide soft,
non-damaging ride for empty semitrailers. Provide suspension
to protect semitrailer from damaging shock and vibration.
Multi-axle suspensions having min. 8-in. of both front to rear
and diagonal walk axle articulation. Installation and ajustment
of suspension per both axle and suspension mfgrs.
When specified (see 6.2) provide air-spring type intended for
on-off road use.