The links compensate for an arc formed by {HEAD ~ the link pivot connections} on {TAIL ~ the axle assembly} as it rotates about the longitudinal pivot axis 
The links compensate for an arc formed by { HEAD ~ the link pivot connections } on { TAIL ~ the axle assembly } as it rotates about the longitudinal pivot axis
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH