The free-play of the clutch pedal before the pushrod contacts the piston in
the master cylinder should be 0.02–0.12 in. (0.50–3.00mm).
To adjust free-play, loosen the locknut and turn the pushrod until the proper
adjustment is obtained. Tighten the locknut after the adjustment is complete.
- First, depress the clutch pedal and measure the distance between the pedal's
normal height and the point at which the clutch begins to disengage (effort
increases) in order to determine the free-play. The play should be:
- GLC: 0.43–0.67 in. (11–17mm)
- 626: 0.43–0.67 in. (11–17mm) for non-turbocharged models
- 626: 0.20–0.51 in. (5–13mm) for turbocharged models
- If play is incorrect, loosen the locknut on the clutch cable. Pull the release
fork backward so as to create a clearance between the adjusting nut roller
and fork. The clearance should be about 0.06–0.09 in. (1.5–2.3mm)
for rear wheel drive vehicles or 0.08–0.12 in. (2–3mm) for front
wheel drive vehicles. Adjust the nut if necessary, then recheck the adjustment
at the pedal. When the adjustment is correct, tighten the locknut.
| Fig. 1: Common clutch free-play adjustment
|
- If the adjustment is correct, the distance from the bottom of the pedal
to the floor when the clutch is fully disengaged should be at least 3.19 in.
(81mm).
Loosen the locknut on the clutch master cylinder pushrod. Turn the pushrod
to obtain free-play between the pedal and pushrod as specified below. Tighten
the locknut on the pushrod when the adjustment is complete.
- GLC: 0.08–0.12 in. (2–3mm)
- 626/MX-6: 0.02–0.12 in. (0.6–3mm)
- 929: 0.02–0.12 in. (0.5–3mm)
- RX-7: 0.08–0.12 in. (2–3mm)
Depress the pedal lightly and measure the free-play. Free-play should be 0.35–0.59
in. (9–15mm). If not within specification, adjust the free-play as follows:
- On 1988–89 vehicles, depress the clutch pedal 7 times and straighten
the clutch cable in the cable bracket.
- Depress the release lever and pull the pin away from the lever. Then, adjust
the clearance between the pin and the adjusting lever by turning the adjusting
nut. On 1986–87 vehicles, the clearance should be between 0.06–0.10
in. (1.5–2.5mm). On 1988–89 vehicles, the clearance should be
0.08–0.12 in. (2–3mm).
- After adjustment, ensure that when the clutch is disengaged, the distance
between the floor and the upper center of the pedal is 3.3 in. (84mm).
- Recheck the pedal height and adjust if necessary.
Loosen the locknut on the clutch master cylinder pushrod. Turn the pushrod
to obtain 0.2–0.5 in. (5–13mm) free-play between the pedal and the
pushrod. Tighten the locknut on the pushrod when the adjustment is complete.
