Proceeding

Thanks to my own desperate effort last late at night on the steering gear box for air cooled VW 1303 Super Beetle, these steering replacement parts would be kept so long from now, these kind of parts, especially the gear box is not available in the world wide market as a replacement parts, specific right side steering design for few countries with left side traffic law is the reason, Japan, England and Australia and so on. Remembering that the best care must be taken while finishing worm gear surfaces, exactly the same surfaces between input and output gears must be touched on every trial fitting phase, no any angular positioning discrepancy is accepted, again exactly the same opposing surfaces should touched each other, so precise and fine finger works using some diamond files with ultimate concentration under keen sense is required. The very professional skill like a watch maker is indispensable. In short, difficult work marked with 5 wrenches.

As for the replacement of rear automatic Multi Plate Transfer 5 disks done by OSAKA SUBARU Yao branch,  the works had been finished without delay, though some interfering accident happened on the way. A necessary step to remove exhaust intermediate pipe, 3 of the stud bolts were all broken in loosening phase because of rust with long period of time, for 20 years. This problem was solved as an usual manner making hole through and stainless bolts and nuts were applied there as a measure. This required process  was the first experience for them, because the flange parts there have not been set on the same kind models on Japanese domestic one but only for US model was the reason. As the trans-axle supporting rubber mounts on right and left were replaced at the same time for the sake of disassembling the rear trans-axle case, some motor vibration while idling has increased, it's probably caused by less compliance because of new rubber material's harder viscoelasticity, the phenomena will be soon improved and eliminated after some period of use. Judging from the condition of included ATF, no bad signs such as clutch plate burn or excessive wear would not be caused inside of the main JATCO 4 Speed  Trans-Axle itself.
One of the person served SUBARU factory in Research and Development division says about the first generation BC models that a lack of frontal caster value might the reason for unstable straightness and this is the critical disadvantage for the model. But, I don't think so with different evaluations, because the vehicles designed with much less caster value has enough stability, for example, air cooled Super Beetle with no steering power assist, so on this proposition, deeper considerations, more precise scaling and adjustment on wheel alignment and fundamental geometric axle construction checking would be done on BC7 SUBARU LSi US model as a residual task on this initial Legacy model with left side steering constructive design.