WARNING: DO NOT INSTALL THE CONTROL ARM WITH A LENGTH (center to center of the bolt holes) LONGER THAN 9.63 inches for P/N 555-4100 (with bushing end) or 9.45 inches for P/N 555-4101 (with rod end). ALWAYS CHECK TO MAKE SURE THERE IS AT LEAST 11/16" OF THREAD ENGAGED ON BOTH SIDES OF THE ADJUSTER. SHORTENING THE CONTROL ARMS MORE THAN 1/2" FROM STOCK CAN CREATE NOISE, VIBRATION AND HANDLING PROBLEMS. FAILURE TO HEED THESE WARNINGS MAY LEAD TO SERIOUS INJURY.
6. Tighten the jam nuts on the control arms. Loctite thread locking compound is recommended.
7. Remove the steel sleeve from the center of the new axle bushing (if already installed). Lightly grease the inside of the shell and press the bushing into the shell with the bushing flange facing out. After the bushing is installed, grease the steel sleeve and tap it into the bushing with a hammer.
8. Slip the thrust washer (the large black urethane ring) over the small end of the axle bushing with the part numbers facing away from the bushing (# should face towards the center of the car). See diagram.
9. Grease the sides of the bushings and the thrust washer with a sticky grease and install the front end of the control arm into the car. Do not tighten the bolt yet.
10. Pull the control arm down over the axle bushing and install the bolt. Raise or lower the front of the differential with a jack to align the bolt holes. In some cases it may be necessary to jack under the rear of the differential (under the cover) to tilt the bushings forward.
11. Tighten both bolts and repeat the procedure for the other arm.
12. Check the pinion angle using the accompanying instruction sheet. Because of production variances and the large variety of modified cars, some re-adjustment may be necessary.