Front Alignment - Specifications
90ford18 SUSPENSION - FRONT - ALIGNMENT SPECIFICATIONSArticle No. 90-13-8
LIGHT TRUCK: 1989-90 AEROSTAR, BRONCO II, BRONCO, ECONOLINE, F SUPER DUTY, F-150, F-250, F-350, RANGER 1991 EXPLORER
ISSUE: Front end alignment on light trucks may occasionally require adjustment. Information about the service parts available to provide the adjustments and service setting objectives is featured in this article.
ACTION: If Light Truck Shop Manual diagnostics indicate the need for front alignment adjustment, use the following caster/camber adjustment parts and alignment specifications.
Refer to the appropriate Light Truck Shop Manual for service details. The following Alignment Service Parts Charts provide correct parts usage for each type of vehicle. Select the appropriate parts group from these charts and use the Caster/Camber Parts Information Chart to order the parts required.
(*) These vehicles utilize monobeam designs in which manufacturing capability establishes alignment parameters.
SERVICE SETTING SPECIFICATIONS
The following chart has been created to give optimum alignment settings to set alignments to when shop manual diagnostics indicate adjustment is required to resolve an alignment concern.
The following chart provides average camber and caster settings.
* Defined as (LH camber + RH camber) divided by
2. Vehicles set to this specification, as measured with vehicle loaded to normal loading conditions will result in optimum tire wear.
** Defined as (LH caster + RH caster) divided by
2. These are not recommended values for settings. They are only maximum and minimum limitations.
^ Vehicles which exceed the maximum average caster value shown above may result in shimmy concerns.
^ Vehicles operated below the minimum average caster value shown may result in wander and poor steering returnability concerns.
If the vehicle is not within these minimum and maximum average caster values, or if the vehicle has experienced any of these listed steering/handling concerns, the average caster should be set in accordance with the ride height/caster chart in the Shop Manual.
OTHER APPLICABLE ARTICLES: 89-21-10
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 3200