The torsion bar resists the twisting motion and brings {HEAD ~ the oscillating axle assembly} back to {TAIL ~ a level state} 
The torsion bar resists the twisting motion and brings { HEAD ~ the oscillating axle assembly } back to { TAIL ~ a level state }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL