Driveshaft Runout and Balancing
Base Part Number: 04602
Special Tool(s) / General Equipment
100-002 (TOOL-4201-C) Holding Fixture with Dial Indicator Gauge |
Inspection
NOTE: Driveline vibration exhibits a higher frequency and lower amplitude then high-speed shake. Driveline vibration is directly related to the speed of the vehicle and is noticed at various speeds. Driveline vibration can be perceived as a tremor in the floorpan or heard as a rumble, hum or boom.
NOTE: Refer to Specifications in this section for runout specifications.
1. NOTE: Do not make any adjustments before carrying out a road test. Do not change the tire pressure or the vehicle load.
Carry out a visual inspection of the vehicle. Operate the vehicle and verify the condition by reproducing it during the road test.
The concern should be directly related to vehicle road speed. not affected by acceleration or deceleration or could be reduced by coasting in NEUTRAL.
2. Refer to: Jacking and Lifting - Overview (100-02 Jacking and Lifting, Description and Operation).
3. NOTE: The driveshaft should be kept at an angle equal to or close to the curb-weighted position. Use a twin-post hoist or a frame hoist with jackstands.
Inspect the driveshaft for damage, undercoating or incorrectly seated U-joints. Rotate the driveshaft slowly by hand and feel for binding or end play in the U-joint trunions. Remove the driveshaft. Inspect the slip yoke splines for any galling, dirt, rust or incorrect lubrication. Clean the driveshaft or install new U-joints as necessary. Install a new driveshaft if damaged. After any corrections or new components are installed, recheck for the vibration at the road test speed. If the vibration persists after inspection, measure the driveshaft runout.
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.