Mazda Trucks 1972-1986 Repair Guide

Front End Alignment

Print

CASTER



See Figures 1 and 2

Click image to see an enlarged view

Fig. Fig. 1: Caster angle computation



Click image to see an enlarged view

Fig. Fig. 2: Caster angle affects straight line stability

Caster is the forward or rearward tilt of the upper ball joint. Rearward tilt is positive caster; forward tilt is negative caster. Caster is adjusted by changing the shims between the upper arm shaft and the frame, or, by turning the shaft until the correct angle is obtained.

CAMBER



See Figures 3, 4, 5 and 6

Click image to see an enlarged view

Fig. Fig. 3: Camber angle computation



Click image to see an enlarged view

Fig. Fig. 4: Adding shims to change caster and camber angles



Click image to see an enlarged view

Fig. Fig. 5: Camber angle influences tire contact with the road



Click image to see an enlarged view

Fig. Fig. 6: Toe-in means the distance between the wheels is closer at the front than at the rear of the wheels

Camber is the outward or inward tilting of the wheels at the top. Camber is adjusted by adding or subtracting the shims between the upper arm shaft and the frame. Shims are available in thicknesses of 1.0mm, 1.5mm, 2.0mm, and 3.0mm.

TOE-IN



See Figures 7 and 8

Click image to see an enlarged view

Fig. Fig. 7: Computing toe-in



Click image to see an enlarged view

Fig. Fig. 8: The measuring points for tie rod length

Toe-in is the amount, measured in fractions of an inch, that the wheels are closer together in the front than the rear.

Toe-in can be changed by changing the length of the tie rods. Threaded sleeves on the rods are provided for this purpose. The clamps on the tie rods must be positioned to prevent interference with the center link on the Rotary Pick-Up.

TURNING ANGLE



See Figure 9

Click image to see an enlarged view

Fig. Fig. 9: Turning angle stop screws

Turning stop screws are located at the steering knuckle. If necessary, the screws can be adjusted.

 
label.common.footer.alt.autozoneLogo