When the selector lever is moved to the Low position on the quadrant, the manual valve is positioned to allow drive oil, intermediate oil and low oil to pass through the valve. Low oil is directed to the 1-2 shift valve train which acts with the 1-2 valve spring against governor oil pressure to close off drive oil from passing into the second clutch passage. At the same time, low oil is directed to the reverse and low control valve and acts against the spring to allow detent regulated oil at the reverse and low control valve to flow to the 2-3 shift valve, which is bottomed in its bore by intermediate oil pressure and the valve spring. The detent oil passes through the 2-3 shift valve and into the third clutch passages to apply the third clutch and to close off modulator oil pressure from the 3-2 control valve to the 2-3 shift control valve. Third control oil is also directed to the reverse and low control valve, which is held open against its spring by low oil pressure, and closes off the source of supply to the servo release passage, to allow the servo to apply the low band. Intermediate oil seats the check ball at the reverse passage at the pressure regulator boost valve cavity and continues to the pressure regulator valve to increase oil pressure in the circuit.

Summary

The third clutch is on, the band is on. The transmission is in Manual First.