But if they do survive, and find themselves without one or both of their palps - their equivalent of a penis - they will protect their would-be eater, and have benefit without the burden of their privates.
Couple tractor and first semitrailer as described earlier: A converter gear or dolly is a coupling device of one or two axles and a fifth wheel by which a semitrailer can be coupled to the rear of a tractor-trailer combination forming a double bottom rig.
Position the Converter Dolly in Front of the Second (Rear) Trailer. 1  Release the dolly brakes by opening the air tank petcock. (Or, if the dolly has spring brakes, use the dolly parking brake control.) 2  If the distance is not too great, wheel the dolly into position by hand so it is in line with the kingpin.