(14) Plot toe readings for rear suspension on
Dynamic Toe Pattern Graph provided in this section
(Fig. 24). If toe pattern arc is within allotted range,
rear toe pattern is within limits. If toe pattern is not
within allotted range, toe links must be raised or
lowered to achieve proper toe pattern.
TOE PATTERN ADJUSTMENT
Once both front and rear toe pattern arcs have
been plotted, compare each with the corresponding
Design Arc and Range shown in the graph. If either
plotted arc falls outside the allotted range at any
point, toe pattern adjustment is necessary.
If the front toe pattern requires adjustment, the
steering gear can be raised using split shims. If the
steering gear must be lowered, the gear mounts are
misaligned and will require alignment.
If the rear toe pattern requires adjustment, the
rear toe links can be raised or lowered using toe link
shims. The rear toe links are mounted to the frame
in vertical elongated holes that allow the toe link to
be moved up or down. Toe link shims in increments
of 2 mm (0.080 in.) above or below design (nominal)
are used to position the toe link.
A 2 mm (0.080 in.) change in steering gear or toe
link height will effect the toe pattern by about 0.15
degrees when measured from the design height (nom-
inal) to either jounce or rebound positions. It is typ-
ical for a shim to have about 1 mm (0.040 in.) up and
down play.
FRONT TOE PATTERN
On the front of the vehicle, the tie rods are located
in front of the spindles. If the steering gear is raised,
toe-in will increase on rebound and toe-out will
increase on jounce. If the steering gear is lowered,
the opposite will occur. For information on steering
gear mounting, (Refer to 19 - STEERING/GEAR -
REMOVAL).
REAR TOE PATTERN
On the rear of the vehicle, the tie rods (toe links)
are located rearward of the spindles. If a toe link is
raised, toe-out will increase on rebound and toe-in
will increase on jounce. If a toe link is lowered, the
opposite will occur. For information on toe link
mounting, (Refer to 2 - SUSPENSION/REAR/TOE
LINK - REMOVAL).
SUSPENSION COMPONENT INSTALLATION
After toe pattern has been measured and any nec-
essary adjustments made, perform the following:
(1) Install coil-over-shock assemblies. (Refer to 2 -
SUSPENSION/FRONT/SHOCK - INSTALLATION),
(Refer to 2 - SUSPENSION/REAR/SHOCK -
INSTALLATION)
(2) Connect stabilizer bar links to lower control
arms. (Refer to 2 - SUSPENSION/FRONT/STABI-
LIZER LINK - INSTALLATION) (Refer to 2 - SUS-
PENSION/REAR/STABILIZER LINK -
INSTALLATION)
(3) Verify and adjust wheel alignment toe settings
as necessary. (Refer to 2 - SUSPENSION/WHEEL
ALIGNMENT - STANDARD PROCEDURE)
(4) Install belly pan. (Refer to 23 - BODY/EXTERI-
OR/BELLY PAN - INSTALLATION)
(5) Road test vehicle to determine if condition is
corrected.
ZB WHEEL ALIGNMENT 2 - 73
WHEEL ALIGNMENT (Continued)
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