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:
