1978 models required 1.5 in. of clutch pedal free-play. 1979 and 1980 models no longer have free-play adjustments. The clutch release bearing is in constant contact with the clutch fingers. A clutch pedal height adjustment is required instead. Starting in 1981, a self-adjusting clutch is standard.1978-80 Models
- Jack up the front of the car and support on jackstands.
- At the clutch "bell" housing, remove the return spring and the dust shield.
- Loosen the clutch cable locknut and the adjusting nut.
- For 1978 models, move the clutch release lever forward until all play is removed. Hold the lever in this position until adjustment is made. Insert a 0.030 in. gauge against the release lever cable spacer. Finger-tighten the nut against the gauge. Tighten the locknut. This should produce free-play of 1 1 / 2 inches.
- For 1979 and 1980 models, raise the pedal and turn the adjusting nut clockwise. To lower-turn counterclockwise. Adjust the pedal travel to 5.3 inches. (Total length of travel). Tighten the locknut.
- Depress and release the clutch pedal several times. Recheck the free-play or pedal travel. Readjust if necessary. To check the proper adjustment on 1979 and 1980 models, you should be able to raise the clutch pedal (from the end of its normal return height to the pedal stop) about 2 3 / 4 inches.
- Reinstall the clutch return spring and dust shield. Lower the car.
- Open the hood. Find the clutch cable where it goes through the dash panel. (Driver's side.) The nylon adjusting nut has a locking step built into it. The locking step fits into a rubber insulator which keeps it from moving.
- Pull the clutch cable toward the front of the car until the adjusting nut is free from the rubber insulator. (It may be necessary to remove the clutch pedal bumper stop (1978 models) or block the clutch release forward (1979-80 models) to free the adjusting nut from the rubber insulator.
- For 1978 models, when the adjusting nut is free, back it away from the insulator about .030 inch. Release the cable, then pull it slightly forward until all slack is taken from the clutch release lever. Turn the adjusting nut toward the rubber insulator until contact is made. Tighten until the locking tabs index in the rubber insulator. The clutch free-play should be 1 1 / 2 inches.
- For 1979-80 models, rotate the adjusting nut until the recommended pedal travel of 5 1 / 4 inches is reaches. (Adjusting nut indexed in rubber insulator).
- Cycle the clutch pedal several times and check your adjustment. The free-play on 1978 models should be 1 1 / 2 inches. On 1979 and 1980 models, the pedal travel is 5 1 / 4 inches. You should be able to raise the pedal (1979-80 models) about 2-6 inches (from normal height to pedal stop). Readjust if necessary.
The free-play in the clutch is adjusted by a built-in mechanism that allows the clutch controls to be self-adjusted during normal operation.
The self-adjusting feature should be checked every 5,000 miles. This is accomplished by insuring that the clutch pedal travels to the top of its upward position. Grasp the clutch pedal with your hand or put your foot under the clutch pedal, pull up on the pedal until it stops. Very little effort is required (about 10 lbs.). During the application of upward pressure, a click may be heard which means an adjustment was necessary and has been accomplished.