Check suspension components

• Any "walking beam" type heavy vehicle suspension has signs of damage to beam;

• Springs are cracked, broken or missing;

• Air bags leak or sag;

• Leaves in a leaf spring are displaced sideways more than 10% of their width or so that they contact wheels, brakes or the frame;

• Shock absorbers, if originally fitted, are missing, loose, inoperative or leak;

• Any suspension component is not correctly aligned or is damaged, loose or broken;

• Any nut, bolt or locking mechanism is insecure or missing.