2013年5月6日月曜日

Axle constructive geometry



Deformed rubber parts of strut mount compliance rubber part in BC7 SUBARU Legacy LSi US model forced me to move the frontal main bar forward. This phenomena was observed after careful checking this morning and the procedure to do that would not be an difficult task. The weight probably over 200 kg of EJ22 flat 4 boxer motor and 4 speed Jatco trans-axle would be burdened on the main bar, so the resistance would not happen because the suspension springs on both side would push the body weight up to upward. Repositioning would be relatively easy with precise adjusting. Now, I will do that while the idea is lucky day.
Frontal main bar was corrected in forward position by loosening 4 of 17mm nuts for main bar tightening and 4 pieces of 19mm nuts for transverse link rear compliance bush case fixation. As I imagined, right side 1mm and left side 2mm forward resetting was the result, so minus setback condition has been dragging the critical chronic bad habit for 22 years period of time. It was judged at transverse link rear arm compliance bush case outer tightening position comparing with the old mark. In addition, 2 mm difference of wheel base value, right side longer, was corrected by loosening the right side rear trailing arm hinge bush lock nut and re-tightened at the adequate position. As a matter of fact, 2585,50 mm value were applied on both side. Of course I know that the constructive axle geometries were changed in to new circumstance, so wheel alignment would be changed as an inevitable result. Coming Thursday would be the day to spare all the time for the work.

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