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Home >> Pontiac >> 1989 >> 6000 L4-151 2.5L >> Repair and Diagnosis >> Diagrams >> Fluid Diagrams >> Automatic Transmission/Transaxle >> Drive Range >> Drive Range - Second Gear

Drive Range - Second Gear

Drive Range - Second Gear:






DRIVE RANGE-SECOND GEAR

FORWARD CLUTCH APPLIED
INTERMEDIATE BAND APPLIED

As both vehicle speed and governor pressure increase the force of governor oil acting on the 1-2 shift valve overcomes the pressure of shift Throttle Valve (T.V.) oil and the force of the 1-2 T.V. spring. This allows the 1-2 valve to open and drive 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. Intermediate Servo
2. 1-2 Accumulator Piston

BASIC CONTROL
Second oil from the 1-2 shift valve is directed to the intermediate servo to apply the intermediate band. At the same time, 2nd oil moves the 1-2 accumulator piston against 1-2 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 forward clutch and the intermediate band are applied; the transmission is in Drive (D) Range - Second Gear.