User Manual

SETTING PINION ANGLE
It may be necessary to set pinion angl e aft er installatio n o f your new Ho tchkis upper trailing arms.
First of all, what is pinion angle? Pinion angle is basically the angle between the centerline of the differential
pinion and the driv e shaft centerline. This angle changes during acceleration and br aking. If the pi nion angle
is exces sive, then vibration and increa sed U-joint wear will occur.
The Hotchkis d o ub l e adjust ab l e t r ail i ng arms all ow you t o ad just the pinion angle with ease. Simply lo o s en t he
two jam nuts and rotate the aluminum turnbuckl e to lengthen or shorten the arm. So, how does one set the
pinion angle?