Driveline Angles

Driveline Angle Inspection





Special Tool(s)

CAUTION: Prior to checking driveline angularity, inspect the U-joints for correct operation.

NOTE: An incorrect driveline angle can cause a vibration or shudder.

1. Check the vehicle for evidence of overload or sagging. Check for specified air pressures in all four tires.
2. Normalize the suspension.
3. Drive the vehicle onto a drive-on hoist or back onto a front-end alignment rack.
4. Inspect the suspension and chassis. Verify that the vehicle curb position ride height is within specification.
^ Measure the curb position ride height with the vehicle empty and all fluid full.





5. Place the special tool on a clean, flat level section on the bottom of the frame rail. Press the ALT ZERO button to calibrate the inclinometer to the vehicle.





6. For the driveshaft angle reading, place the special tool flush against the bottom of the driveshaft. Check and record the reading. Compare the results with the correct angles.





7. To check the pinion angle, rotate the driveshaft so that the rear axle pinion flange yoke ear is parallel to the floor. Remove the U joint snap ring, then install the special tool. Check and record the pinion angle reading.
^ If the angle is not within specifications, repair or adjust to obtain the correct angle . Inspect the rear suspension, rear axle, rear axle mounting or the frame for wear or damage.





8. To check the engine angle, rotate the driveshaft so that the slip yoke ear is parallel to the floor.
^ Remove the U joint snap ring, then install the special tool. Check and record the engine angle reading.
^ If the angle is not within specifications, repair or adjust to obtain the correct angles. Inspect the powertrain/drivetrain mounts or frame rails for wear or damage.