Drive Shaft Angles
WARNING: This page is about a different car, the 2002 Mercury Mountaineer, 2002 Ford Ranger, 2002 Ford Explorer Sport Trac, 2002 Ford Explorer Sport, and 2002 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
An incorrect driveline angle can cause a vibration or shudder.
- Check the vehicle for evidence of overload or sagging. Check for specified air pressures in all 4 tires. Normalize the suspension. Drive the vehicle onto a drive-on hoist or back onto a front-end alignment rack.
- Measure the curb position ride height with the vehicle empty and all fluids full. See appropriate SPECIFICATIONS & PROCEDURES article in WHEEL ALIGNMENT.
- Place the Driveline Inclinometer (164-R2402) on a clean, flat level section on the bottom of the frame rail. See Fig 1 . Press the ALT ZERO button to calibrate the driveline inclinometer to the vehicle.
- For the drive shaft angle reading, place the driveline inclinometer flush against the bottom of the drive shaft. See Fig 2 . Check and record the reading. Compare the results with the correct angles. See Fig 3 -Fig 8 .
- To check the pinion angle, rotate the drive shaft so that the rear axle pinion flange yoke ear is parallel to the floor. Remove the "U" joint snap ring, then install the driveline inclinometer. Check and record the pinion angle reading. See Fig 9 . If the angle is not within specifications, repair or adjust to obtain the correct angles. Inspect the rear suspension, rear axle, rear axle mounting or the frame for wear or damage.
- To check the engine angle, rotate the drive shaft so that the slip yoke ear is parallel to the floor. Remove the "U" joint snap ring, then install the driveline inclinometer. Check and record the engine angle reading. See Fig 10 . 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.