Remove the rear wheel & tire.
Tightening torque:
90 ~ 110N.m (9.0 ~ 11.0kgf.m, 65 ~ 80lb-ft)
Loosen the bolt (A).
Loosen the bolt (A) & nuts and then remove the trailing arm (B).
Tightening torque:
140 ~ 160N.m (14.0 ~ 16.0kgf.m, 101 ~ 116lb-ft)
Installation is the reverse of the removal.