Pinpoint Test C: Clutch Drag

Manual Transaxle and Clutch







Pinpoint Tests

Pinpoint Test C: Clutch Drag

Normal Operation

Clutch pedal movement is transmitted by fluid pressure to the slave cylinder, which in turn presses the release bearing against the clutch diaphragm spring. This force causes the spring to pull the pressure plate away from the clutch disc.

This pinpoint test is intended to diagnose the following:
- Fluid level
- Clutch pedal free play
- Clutch diaphragm spring
- Clutch pedal
- Clutch contamination



PINPOINT TEST C: CLUTCH DRAG

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C1 CHECK THE FLUID LEVEL


- Ignition OFF.
- Inspect the fluid level in the brake master cylinder reservoir.
- Is the fluid level within the MAX and MIN level marks?

Yes
GO to C2.

No
ADD brake fluid and CHECK for leaks in the clutch and brake systems.

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C2 CHECK THE CLUTCH PEDAL FREE PLAY


- Press the clutch pedal lightly by hand.
- Measure the distance the clutch pedal travels.
- Is the clutch pedal travel within 5-13 mm (0.20-0.51 in)?

Yes
GO to C3.

No
BLEED the clutch. REFER to Clutch System Bleeding Service and Repair.

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C3 CHECK THE CLUTCH PRESSURE PLATE AND THE DIAPHRAGM SPRING


- Remove the transaxle.
- Inspect the clutch pressure plate for wear and the diaphragm spring for even diaphragm height. Refer to Clutch Pressure Plate Check Procedures.
- Are there any signs of contamination or wear to the clutch pressure plate or diaphragm spring?

Yes
INSTALL a new clutch pressure plate.

No
INSPECT the clutch disc for damage or excessive runout. REFER to Clutch Disc Check Procedures.

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