Econoline E150 1/2 Ton V6-4.2L VIN 2 (1998)
1.
Verify the vehicle dogtracks by measuring the rear axle thrust angle (Figure 2) on the vehicle with a calibrated 4-wheel alignment machine.
2.
Record reading and follow repair instruction based on reading:
a.
Thrust angle of 0 to +/- 0.5 degrees
(1)
Thrust angle less than 0.5 degrees (32 mm/1.25"centerline difference) is in specification
b.
Thrust angle of +/- 0.51 to 0.8 degrees
(1)
To modify thrust angle by 0.1 to 0.3 degrees:
(a)
Modify the spring center bolt head as shown in Figure 3, on the side of the axle which must be moved. If the vehicle dogtracks to the
right, grind the rear of the right side leaf spring pin. Reverse for dogtracking to the left. Follow repair instructions.
