For 1990-2009 cars

#### Special Tools

J 23498-A Driveshaft Inclinometer

The U-joints working angle is formed by the difference between the angles of two shafts that intersect.

• | No working angle should be equal to zero. An angle of 0 degrees will cause premature U-joint wear due to lack of rotation of the U-joint needle bearings.

• | Always orientate the J 23498-A facing the same side of the vehicle for each measurement taken.

• | Be sure to record accurately the measurement data.

### Measurement Procedure

1. Raise and support the vehicle; ensure the rear wheel can rotate flexibly. Suspension travel will not affect driveline angles on vehicle. Refer to Lifting and Jacking the Vehicle.
2. Place the transmission into NEUTRAL.
3. Clean any corrosion or foreign materials from the U-joint.
4. Rotate the drive shaft to align the rear-most yoke flanges vertically.
5. Install the J 23498-A to the lower U-joint bearing cap of the rear-most shaft yoke.
6. Measure and record the angle of the rear drive shaft on the J 23498-A .
7. Rotate the drive shaft to align the front-most yoke flanges vertically.
8. Install the J 23498-A to the lower U-joint bearing cap of the front-most yoke.
9. Measure and record the angle of the front drive shaft on the J 23498-A .
10. Calculate the U-joint working angle at each intersection of the two shafts.

Subtract the larger number from the smaller to obtain the working angle.

11. Compare the calculated working angle and specified working angle .

Specification
Maximum U-joint working angle: 0.75 degrees

12. Any working angle calculated which does not fall within the specifications requires adjustment.
13. Any working angle calculated to be equal or less than 1/2 degree requires adjustment.