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STANDARD PROCEDURE HEIGHT MEASUREMENT The vehicle suspension height MUST be measured and adjusted before performing wheel alignment procedure. FRONT RIDE HEIGHT MEASUREMENT 1. Inspect tires and set to correct pressure. 2. Jounce the front of the vehicle. 3. With vehicle on level ground or hoist, make the following measurements: a. Front wheel spindle (center) to ground vertical distance. b. Measure the center of front face of bolt on the rear leg of lower control arm and the center of front face of front leg of control arm to ground vertical distance and take the average height. c. Difference between spindle and control arm bolt to ground average distance should be 71mm+/- 6mm. Note that the control arm bolt is lower than the spindle. 4. After making any ride height adjustment, roll vehicle preferably jouncing it also, to relieve camber Effects and then re-measure Lower control arm bolt to ground height. 5. Repeat the previous steps until the ride height is within specifications. REAR RIDE HEIGHT MEASUREMENT 1. Inspect tires and set to correct pressure. 2. Jounce the front of the vehicle. 3. With vehicle on level ground or hoist, make the following measurements: a. Distance from the landing pad of the jounce bumper on the axle side to the jounce bumper cup lip of the frame side. b. The difference between the jounce bumper landing pad and the jounce bumper cup lip the reading should be 148 mm +/-10 mm for 9.25 9 axle, 154 mm +/-10 mm for 8.25 9 axle. TOE ADJUSTMENT SUSPENSION HEIGHT MESUREMENT MUST BE The wheel toe position adjustment is the final adjust- 1. Start the engine and turn wheels both ways before straightening the wheels. Secure the steering 2. Loosen the tie rod jam nuts (3). NOTE: Each front wheel should be adjusted for 3. Adjust the wheel toe position by turning the inner tie rod (4) as necessary. 4. Tighten the tie rod jam nut (3) to 75 N·m (55 ft. lbs.). 5. Verify the specifications. 6. Turn off engine. 2 - 4 WHEEL ALIGNMENT ND |