Driveline Shudder/Moan Condition
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
DRIVELINE ANGLE CHART
| DRIVELINE SYMPTOM | VEHICLE LOADING | INITIAL REPAIR ACTION | SYMPTOM AFTER REPAIR | FURTHER REPAIR ACTION |
|---|---|---|---|---|
| DRIVELINE TYPE 1-PIECE | ||||
| Take-off Shudder at any vehicle loading | Curb Weight (unloaded) | Lower Axle Pinion using 1° wedge with thick edge forward | Shudder not reduced or eliminated with initial repair | Replace 1° wedge with 2° wedge with thick edge forward |
| Driveline Vibration or Moan on coastdown above 45 mph at any vehicle loading | Curb Weight (unloaded) | Raise Axle Pinion using 1° wedge with thick edge rearward | Vibration or Moan NOT reduced or eliminated with initial repair | Replace 1° wedge with 2° wedge with thick edge forward |
| DRIVELINE TYPE 2-PIECE | ||||
| 10-25 mph Take-off Shudder under medium to heavy throttle | Curb Weight (unloaded) | Lower Axle Pinion using 1° wedge with thick edge forward | Take-off Shudder NOT reduced or eliminated | Replace 1° wedge with 2° wedge with thick edge forward |
| Vibration or Moan on coastdown above 45 mph | Lower Center Bearing in 1/4 inch increments, up to 3 shims. Bolts must allow 3 threads past the nut. Tighten to 47.5 Nm (35 lb-ft). | |||
| Vibration or Moan on coastdown above 45 mph | Curb Weight (unloaded) | Raise Axle Pinion using 1° wedge with thick edge rearward | 10-25 mph Take- off Shudder under medium to heavy throttle | Lower Center Bearing in 1/4 inch increments, up to 3 shims. Bolts must allow 3 threads past the nut. Tighten to 47.5 Nm (35 lb-ft). |
| Vibration or Moan on coastdown above 45 mph not eliminated | Replace 1° wedge with 2° wedge with thick edge rearward | |||
| Vibration or Moan on coastdown above 45 mph -OR- 10-25 mph Take-off Shudder under medium to heavy throttle |
Loaded (with or without trailer) | Discard production steel center bearing shim spacer (if equipped) and raise Center Bearing in 1/4 inch steps using 2, 1 or 0 shims. Bolts must allow 3 threads past the nut. Tighten to 47.5 Nm (35 lb-ft). If not equipped with a steel center bearing shim, install the axle wedge. |
10-25 mph Take-off Shudder under medium to heavy throttle (unloaded) | Lower Axle Pinion using 1° wedge with thick edge forward |
| Vibration or Moan on coastdown above 45 mph (unloaded) | Raise Axle Pinion using 1° wedge with thick edge rearward | |||