Ridetech 13017199 - Manual (Page 4)

14. How do you set the
pinion angle? On a single-
piece shaft you want to set it
up where a line drawn
through the center of the
engine crankshaft or output
shaft of the transmission and
a line drawn through the
center of the pinion are
parallel to each other but not
the same line.
A simple way to do this is
to place a digital angle finder
or dial level on the front face
of the lower engine pulley or
harmonic balancer. This will
give you a reading that is 90
degrees to the crank or
output shaft unless you have
real problems with your
balancer. At the other end,
you can place the same level
or angle finder against the
front face of the pinion yoke
that is also at 90 degrees to
the centerline. If you rotate
the yoke up or down so both
angles match, you have
perfect alignment.
Road testing will tell you if
you have it right. If you
accelerate and you get or
increase a vibration, then the
pinion yoke is too HIGH.
Rotate it downward in small
increments of a degree or
two until the problem goes
away. If you get or increase
a vibration when
decelerating, then the pinion
yoke is too LOW. Rotate it
upward to correct it.