If a vehicle is involved in an accident that may result
in a bent or sprung frame, inspect the vehicle for the following conditions:
There are two different methods for determining vehicle measurements:
| • | The three-dimensional method |
Tram Gauge Method
A tram gauge is a quick reference for determining vehicle damage. The
tram gauge set requires a vertical pointer that is capable of reaching 914 mm
(36 in). Measure the engine compartment components from point to point
using the vertical pointers equally set. Use the vertical pointers in order
to make other measurements on the horizontal plane of the datum line, parallel
to the underbody. Ensure that the pointers are set as specified for each point.
When measuring dimensions to the gauge holes, measure to the center of the
holes flush to the adjacent surface metal. Cross-check the diagonal dimensions
in order to verify the dimensional accuracy of the vehicle underbody.
Three-Dimensional Method
If you are measuring the structural repair, ensure that the repair equipment
is capable of simultaneously measuring the following multiple points:
Measure the vehicle body in order to obtain accurate comparisons to
the vehicle structure. Universal measuring systems combine the use of equipment
and techniques in order to make underbody and upperbody three dimensional
measurements. The universal system provides accurate simultaneous measurements
of the following items:
