Driveshaft Balancing - Using the Mastertech Series MTS 4000 Driveline Balance and NVH Analyzer (Vetronix)

WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

Install the Mastertech® Series MTS 4000 Driveline Balance and NVH Analyzer (Vetronix) to the vehicle.
Working under the vehicle, install an accelerometer. The accelerometer can be attached and mounted near either the transmission or differential end of the driveshaft.
Clean an area of the driveshaft and install the reflective tape, then install the photo tachometer sensor. The sensor should be placed at approximately a 20 degree angle from perpendicular to the surface of the reflective tape. Make sure the sensor does not get moved during the balance procedure.
1. Reflective tape.
2. Photo tachometer sensor.
  
  Fig 1: Identifying Photo Tachometer Sensor Installation Angle
  Courtesy of FORD MOTOR CO.
Using the Mastertech® Series MTS 4000 Driveline Balance and NVH Analyzer (Vetronix), run a driveshaft balance test with the driveshaft unmodified.
Using the Mastertech® Series MTS 4000 Driveline Balance and NVH Analyzer (Vetronix), run a second test with a test weight. Using a metal band, secure the test weight to the end of the driveshaft. The weight should be placed at the end of the driveshaft tube, as close to the tube to yoke weld seam as possible. Mark the location of the test weight on the driveshaft, as shown in illustration.
- Select the test weight based on driveshaft size. Larger driveshafts use 10 g (0.353 oz). Smaller driveshafts use 5 g (0.176 oz).
1. 2. Test weight.
2. 3. Tube to yoke weld seam.
3. 4. Driveshaft pinion flange.
  
  Fig 2: Securing Test Weight To Driveshaft Using Metal Band
  Courtesy of FORD MOTOR CO.
Remove the test weight, then install the recommended weight at the position directed by the Mastertech® Series MTS 4000 Driveline Balance and NVH Analyzer (Vetronix). Using a metal band and epoxy, secure the test weight to the driveshaft, as shown in illustration.
- The results are displayed with respect to the location to where the test weight was placed.
1. 2. Test weight.
2. 3. Measure in this direction.
3. 4. Driveshaft diameter.
4. 5. Directional rotation.
5. 6. Balance weight relative to test weight centerline.
  
  Fig 3: Performing Driveshaft Balancing
  Courtesy of FORD MOTOR CO.
Using the Mastertech® Series MTS 4000 Driveline Balance and NVH Analyzer (Vetronix), run a third test to verify the repair.