Rough 1-2 Shift

1. Throttle valve cable binding or improperly adjusted.

2. Binding throttle valve to throttle valve plunger.

3. Binding throttle valve limit valve.

4. Binding accumulator valve.

5. Binding line bias valve.

6. Intermediate servo assembly.

a. Incorrect selection apply pin.

b. Damaged or missing servo piston to case oil seal ring.

c. Bleed cup plug missing in case.

7. 1-2 accumulator.

a. Oil ring damaged.

b. Piston stuck

c. Broken or missing spring.

d. Damaged bore.

8. 1-2 shift check ball 8 missing or sticking.