The free-play of the clutch pedal before the pushrod contacts the piston in the master cylinder should be 0.5–3.0mm (0.0197–0.1181 in.). To adjust the free-play, loosen the locknut and turn the pushrod until the proper adjustment is obtained. Tighten the locknut after the adjustment is complete.
The clutch pedal free-play is measured from the top of the pedal pad at rest to the point at which it stops when the pushrod hits the master cylinder piston. Free-play is adjusted by loosening the locknut on the pushrod and adjusting the pushrod length by rotating the rod. The clutch should have a free travel, measured at the pedal pad, of 0.6–3.0mm (0.0236–0.1181 in.) for 1976–84, 5–13mm (0.197–0.512 in.) for 1986 trucks. Tighten the locknut when the adjustment is complete.