{HEAD ~ Each turn} assist cylinder is coupled between the frame and {TAIL ~ a corresponding caster wheel assembly} 
{ HEAD ~ Each turn } assist cylinder is coupled between the frame and { TAIL ~ a corresponding caster wheel assembly }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL