PURPOSE: To make a turning drive being capable of a small sharp turn at low speed and that being stabilized at high speed attainable, by selecting a direction where rear wheels are deviated, with selection of a transmission.
CONSTITUTION: A transmission sensor 42 generates each of signals S1WS3 when a gearshift position is situated at low, medium and high speed sides. A controller 43 transmits each of exciting signals t1 and t2 to a solenoid 45 when these signals S1 and S2 are inputted but it no longer transmits these exciting signals when the signal S3 is inputted. When the exciting signal t1 is transmitted to the controller, a four-port 3 position select valve 44 takes a second position 47 but when no exciting signals are transmitted, the four-port 3 position select valve takes a third position 49. With these selection operations, a direction where rear wheels 19 are deviated is selected.
TSUBOTA YASUMASA
UNO TAKAAKI
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