Converter Clutch Released

Drive Range - Second Gear:

D-4 - SECOND GEAR

CONVERTER CLUTCH - RELEASED
OVERDRIVE ROLLER CLUTCH - HOLDING
FORWARD CLUTCH - APPLIED
INTERMEDIATE BAND - APPLIED

As both vehicle speed and governor pressure increase, the force of the governor oil acting on the 1-2 shift valve overcomes the pressure of Modulated Throttle Valve (M.T.V.) up oil and the force of the 1-2 throttle valve spring. This allows the 1-2 shift valve to open and Drive 4 (D4) oil to enter the second (2nd) oil passage. This oil is called second (2nd) oil. Second oil from the 1-2 shift valve is directed to the following:
1. 1-2 Shift Checkball (8)
2. Intermediate Servo
3. 1-2 Accumulator Piston
4. Converter Clutch Shift Valve

BASIC CONTROL

Second oil from the 1-2 shift valve will seat the 1-2 shift checkball forcing 2nd oil through an orifice. Second oil is then directed to the intermediate servo to apply the intermediate band. At the same time, 2nd oil moves the 1-2 accumulator piston against accumulator pressure and the accumulator spring to maintain a controlled build-up of pressure on the intermediate servo during the 1-2 shift for a smooth band apply.

SUMMARY

The converter clutch is released, the overdrive roller clutch is holding, the forward clutch is applied, and the intermediate band is applied; the transmission is in Drive (D) Range - Second Gear.