Spark

Fourth Gear

Line pressure passes through the manual valve to the shift valves A and B.

Line pressure which has sent through the manual valve to the shift valve A stops there.

Line pressure which has passed through the shift valve B is sent to the high clutch and the shift valve A.

Line pressure which has passed through the shift valve A is sent to the 2-4 brake servo engagement side.

Therefore, the 2-4 brake and the high clutch operate.