Determine Caster Value

Determining Caster Value








1 Front axle
2 Bottom edge of frame
3 Rear longitudinal control arm bolt






4 Rear axle
5 Tubular frame crossmember
6 Front longitudinal control arm bolt


1. Select nomogram according to wheel base.

Fig. 1:

Fig. 2:

Fig. 3:

For wheelbase 2400 mm, see Fig. 1
For wheelbase 2850 mm, see Fig. 2
For wheelbase 3120 mm and 3400 mm, see Fig 3

2. Measure distance between center of rear longitudinal control arm bolt (3) on front axle (1) and bottom edge of frame (2).
Plot the measured dimension "b" on the horizontal axis of the nomogram and draw a vertical line at this point.

3. Measure distance between center of front longitudinal control arm bolt (6) on rear axle (4) and bottom edge of tubular frame crossmember (5)
Plot the measured dimension "a" on the vertical axis of the nomogram and draw a line at this point parallel with the existing lines.

4. Determine specified caster in nomogram.
To do this, draw a horizontal line from the intersection of the lines for "a" and "b" and read off the specified caster value "c".

Model 463 with front axle 730.3

Front Caster Specified value nomogram
Permissible tolerance ±4
Permissible tolerance between left and right ±30'