MAHLE RTI Laser 4 - Manual (Page 12)

Page 11
STEERING AXIS INCLINATION
(SAI) READING
(LASER 4 Plus)
SAI: The inward tilt of the ball joint or strut at the top
.
Proceed with the following steps to read SAI:
1) With the Electronic Gauge mounted on the left front
wheel clamp, turn the left front wheel outward at the
front for a 20 degree reading on the radius gauge.
(Refer to Fig.19)
2) Turn the Electronic Gauge so it is level.
3) Set the selector to SAI and press the switch to ON.
Press the Zero Button. (See Fig. 23)
4) Turn the wheel inward at the front for a 20 degree
reading on the radius gauge. This is a total swing of
40 degrees. (See Fig. 20)
5) DO NOT RE-LEVEL THE ELECTRONIC GAUGE.
6) Read SAI on the Digital Readout Scale (A positive
14.5 is indicated Fig. 23)
7) Repeat the above procedure on the right front wheel.
INCLUDED ANGLE
Included Angle: Total of the Camber and SAI Readings
Subtract negative Camber from SAI (as for the above example):
SAI 14.5
Camber -0.3
Included Angle 14.2
Add positive Camber readings to SAI: SAI 14.5
Camber +0.5
Included Angle 15.0