The 5th wheel is mounted on the back of the tractor, it lifts the trailer slightly when it contacts the apron when you are coupling the vehicles, and it houses the locking jaws which wrap around the shank of the kingpin to securely attach the trailer. | La quinta rueda esta montada en la parte posterior del tractor, levanta ligeramente el remolque cuando entra en contacto con el faldon cuando esta acoplando los vehiculos, y aloja las mordazas de bloqueo que se envuelven alrededor del vastago del perno rey para sujetar firmemente el remolque. |
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