Reverse requires greater clutch and brake holding force, so the manual valve will direct additional fluid to work with the pressure regulator valve spring, increasing line pressure.

Question

Quizplus · Accepted Answer

In reverse gear, the transmission requires higher line pressure to handle the increased load, so the manual valve directs more fluid to assist the pressure regulator valve spring, increasing the line pressure.

Reverse Requires Greater Clutch and Brake Holding Force, So the Manual