Ridetech 12100109 - Manual (Page 17)

16. 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.