The swing arm assembly is pivotally mounted to {TAIL ~ a pivot} about a swing arm pivot axis located above the bottom rail surface when the suspension assembly is mounted to {HEAD ~ the trailer} 
The swing arm assembly is pivotally mounted to { TAIL ~ a pivot } about a swing arm pivot axis located above the bottom rail surface when the suspension assembly is mounted to { HEAD ~ the trailer }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD