| 摘要 |
PURPOSE: To prevent tire locking of a vehicle provided with an interaxle differential. CONSTITUTION: A transmission rotary sensor 29 detecting output rotation of a transmission 3 and a differential rotary sensor 30 detecting the rotation of the interaxle differential 5 are provided, a differential lock valve 26 is operated when a difference between the number of transmission output rotation and the number of relative rotation of the number of differential rotation exceeds the set number of rotation, a differential lock mechanism 5a is operated by its output pressure oil to lock the interaxle differential, and power is given to a tire-locked wheel to prevent tire locking.
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