1. CAUTION: Do not bend axles or radius arms to change alignment.
Using an alignment rack and manufacturer’s instructions, measure the
caster and camber. • Refer to Alignment Specifications in the
Specifications portion of this section for optimal alignment settings. •
Note any difference between the actual measurements and the
specification. This information will be used to select the correct
service adjuster. 2. Raise and support the front end; for additional
information, refer to Section 100-02. 3. Remove the front wheel(s);
for additional information, refer to Section 204-04. 4. Check the type
and orientation of the installed adjuster.
• Production adjusters have a round flange, a side tab and the amounts
of caster and camber stamped in the top of the adjuster. The first
number is the amount of caster; the second number is the amount of
camber in degrees if the adjuster is installed in the right-hand axle
position. X If the adjuster is in the left-hand axle, the caster
number is the opposite sign of the number shown. For example, a positive
amount in the right-hand axle is a negative amount in the left axle,
and a negative amount in the right-hand is a positive in the left-hand
position. X • Service adjusters have a hex flange, no side tab and
the adjustment amount of the caster and camber stamped into the top.
5. NOTE: The assembly plant sometimes builds vehicles with adjusters
that are not 0-degree type to control alignment. The Camber/Caster
Service Adjuster chart shows the alignment changes that will occur if
the vehicle was originally built with 0-degree adjusters. Select a new
service adjuster and its orientation in the axle to obtain the optimum
caster/camber. Refer to the Camber/Caster Service Adjuster chart in the
Specifications portion of this section. • Note that the caster change
or camber change required to obtain the optimum settings must be added
to amounts of caster/camber in the old or production adjuster. • Use
this example as a guide. If caster must be reduced 1 degree and camber
increased +0.75 degree at the LH wheel, and the existing adjuster has
+0.25-degree caster as installed, select the 1-degree service adjuster
and orient the slot 225 degrees from the straight-ahead position. In all
cases, select the adjuster and orientation that will bring the
alignment closest to the optimal settings. 6. Loosen the pinch bolt.
Using the Steering Arm Remover, remove the adjuster from the axle. 7.
Install the new service adjuster. Orient the slot as noted in Step 5. 1
Position the new adjuster as specified in the chart. 2 Tighten the
pinch bolt. 8. Install the front wheel; for additional information,
refer to Section 204-04. 9. Lower the front end; for additional
information, refer to Section 100-02. 10. Check the alignment. If not
at optimal caster/camber specification, additional adjustment of the
rotational orientation of the adjuster is required. 11. Once optimal
caster/camber has been achieved, reset the toe and clear vision to
optimal settings.
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