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 2 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 or 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 the following multiple points simultaneously:
Measure 2/3 of the vehicle body in order to obtain accurate
comparisons to the vehicle structure.
Universal measuring systems combine the use of equipment and the techniques
in order to make underbody and upperbody 3 dimensional measurements.
The universal system provides accurate measurements of the following
items simultaneously: