Specifications & Procedures: Diagnosis Infiniti Q45 III

PRELIMINARY INSPECTION

1. Check tires for improper air pressure and wear.
2. Check road wheels for runout.
3. Check wheel bearing axial end play.
4. Check suspension lower ball joint axial end play.
5. Check strut operation.
6. Check each mounting part of axle and suspension for looseness and deformation.
7. Check each link, rod and member for cracks, deformation and other damage.
8. Check vehicle posture.

INSPECTION OF CAMBER, CASTER AND KINGPIN INCLINATION ANGLES.

1. Camber, caster, kingpin inclination angles cannot be adjusted.
2. Before inspection, mount front wheels onto turning radius gauge. Mount rear wheels onto a stand that has same height so vehicle will remain horizontal.

TOE-IN INSPECTION

Measure toe-in using the following procedure.

Scheme 1

Scheme 2

1. Bounce front of vehicle up and down to stabilize the posture.
2. Push vehicle straight ahead about 5 m (16 ft).
3. Put a mark on base line of the tread (rear side) of both tires at the same height of hub center. These are measuring points.
4. Measure distance "A" (rear side).
5. Push vehicle slowly ahead to rotate wheels 180 degrees (1/2 turn). If wheels have rotated more than 180 degrees (1/2 turn), try the above procedure again from the beginning. Never push vehicle backward.
6. Measure distance "B" (front side). Total toe-in : Refer to «SPECIFICATIONS»(ref-162089-S31306739952004051300000) .

Scheme 3

Use illustrations for front and rear wheel alignment specifications. (Scheme 4)and (Scheme 5).

Scheme 4

Scheme 5