1-7. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS (Cont).
Indicate presence of semitrailer to vehicles behind.
Tows additional equipment behind semitrailer.
Helper Spring Assembly
Mounted directly over main spring. Provides extra support to main
spring while under heavy load.
Main Spring Assembly
Provides support and absorbs shock from road during transit.
Provides braking for semitrailer.
Prevent horizontal movement of main axles.
Axle and Bracket
Connects entire suspension system to frame.
Provides mounting for wheel assemblies. Consists of rear and front
Provides a mounting surface for main spring assembly and helper