During fourth gear shift control process, capacities of first and second hydraulic motors 23, 24 are controlled in {HEAD ~ coordinative form} and the second hydraulic motor 24 has {TAIL ~ its minimum tilting amount} limited to a tilting amount limit q2cmin 
During fourth gear shift control process , capacities of first and second hydraulic motors 23 , 24 are controlled in { HEAD ~ coordinative form } and the second hydraulic motor 24 has { TAIL ~ its minimum tilting amount } limited to a tilting amount limit q2cmin
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH