Except Econoline, Excursion & F250-F550 Super Duty
- Measure ride height. See RIDE HEIGHT SPECIFICATIONS table. Vehicle must be at curb weight (unloaded) condition. Check and note frame angle. See FRAME ANGLE . Place Anglemaster II Driveline Inclinometer (164-R2402) or protractor at any location along bottom of drive shaft. See Figure.
- Read and record angle. Subtract frame angle to obtain drive shaft angle. Compare noted angle with Drive Shaft (DS) angle specification. See appropriate illustration under DRIVELINE ANGLE SPECIFICATIONS . If drive shaft angle is not as specified, check pinion angle. See PINION ANGLE .