Pinpoint Test G: Excessive Noise

Manual Transaxle and Clutch







Pinpoint Tests

Pinpoint Test G: Excessive Noise

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:
- Internal transaxle components
- Clutch pedal
- Clutch slave cylinder
- Clutch pressure plate
- Clutch disc



PINPOINT TEST G: EXCESSIVE NOISE

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G1 TRANSAXLE NEUTRAL GEAR ROLLOVER TEST


- Start the engine and let it idle.
- NOTE: With the clutch pedal fully pressed, the input shaft should stop rotating.
- Press the clutch pedal.
- Does the noise stop when the clutch pedal is pressed?

Yes
REFER to Manual Transmission/Transaxle for transaxle concerns. Testing and Inspection

No
GO to G2.

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G2 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 G3.

No
CHECK the clutch pressure plate for damage. REFER to Clutch Pressure Plate Check Procedures.

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G3 CHECK THE CLUTCH SLAVE CYLINDER


- Remove the transaxle.
- Inspect the clutch slave cylinder for wear or loss of lubrication.
- Are there signs of wear or loss of lubrication?

Yes
INSTALL a new clutch slave cylinder.

No
GO to G4.

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G4 CHECK THE TORSION SPRINGS


- Inspect the torsion springs for fatigue or breakage.
- Are there any signs of fatigue or breakage?

Yes
INSTALL a new clutch pressure plate.

No
INSPECT the crankshaft end play.

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