For 1990-2009 cars only
Use a measuring tram gauge as an accurate method of determining the alignment of the underbody. The tram gauge set required to perform the recommended measurements must include a vertical pointer capable of reaching 457 mm (18 in).
The following 2 types of measurement may be made using a tram gauge:
| • | Direct point to point measurements |
| • | Measurements calculated on a horizontal plane (datum line), parallel to the underbody |
Set the vertical pointers equally. Take the point to point measurements on the following components:
| • | The steering components |
| • | The suspension components |
| • | The engine compartment components |
Dimensions that are measured to gauge holes are measured to the center of the holes and flush to the adjacent surface meta, unless otherwise specified. Cross-body measure the diagonal dimensions on both sides of the vehicle in order to verify the dimensional accuracy of the underbody.
