Clutch: Service and Repair
Removal Procedure^ Tools Required
- J 34860 Clutch Alignment Arbor
- J 35271 Flywheel Holder
- J 7872 Magnetic Base Indicator Set
- J 26900-5 Vernier Caliper
1. Remove the manual transaxle assembly from the vehicle. Refer to Transaxle Assembly Removal in Manual Transmission/Transaxle.
2. Install J 35271 in order to hold the flywheel (3) stationary.
3. Install J 34860 in order to support the clutch disc during removal.
4. Slowly and evenly loosen the 6 cover bolts (2) from the clutch pressure plate until the clutch pressure plate spring tension is completely released.
5. Remove the 6 clutch pressure plate cover bolts and remove the pressure plate from the flywheel.
Important: Do not use solvents, mineral spirits or other cleaning agents containing alcohol on the clutch disc (1). Solvents on the clutch disc causes slipping and premature clutch wear.
6. Remove the clutch disc and J 34860 from the flywheel.
7. Remove J 35271 from the flywheel.
8. Use J 7872 in order to measure the flywheel.
Important: Index the flywheel (1) in relation to the crankshaft with a china marker before removal in order to verify correct installation. Poor engine and/or transaxle balance results if the flywheel is installed in a position other than the position from which the flywheel was removed.
9. Use J 7872 in order to measure the flywheel for runout by slowly turning the flywheel (1) using a flywheel wrench. Resurface or replace the flywheel if the flywheel runout exceeds 0.1 mm (0.004 inch).
10. If the flywheel needs resurfacing, remove the flywheel bolts and the flywheel from the crankshaft. Observe the flywheel position on the crankshaft.
11. Clean the flywheel (2) and the clutch pressure plate-to-clutch disc (1, 3) mating surfaces of oil, grease, and metallic particles.
12. Clean the clutch disc (1) using a clean dry cloth.
13. Inspect the flywheel (2) and the clutch pressure plate (3) for the following conditions:
^ Cracks
^ Heat checking
^ Grooves
^ Excessive wear
^ Bent or broken pressure plate spring levers
^ Weak or damaged diaphragm spring
Notice: If any of the following conditions exist, do not attempt to disassemble or repair the clutch pressure plate. If the flywheel or the clutch pressure plate appears excessively worn, replace the flywheel and/or clutch pressure plate as necessary.
14. Inspect the clutch pilot bearing for smooth rotation. Replace the clutch pilot bearing if the clutch pilot bearing does not spin freely. Refer to Pilot Bearing Replacement.
15. Inspect the clutch disc for the following conditions:
^ Cracks
^ Excessive wear
^ Damaged or weak torsional springs
16. Use J 26900-5 in order to measure the clutch disc (1) wear. Measure the depth of each rivet head depression (2).
Measurement
^ 1.2 mm (0.05 inch) for the 1.0 liter engine
^ 1.5 mm (0.06 inch) for the 1.3 liter engine
17. Replace the clutch disc if the clutch rivet depth is less than 0.5 mm (0.02 inch).
18. Use J 7872 in order to measure the clutch disc (1) for runout. Place the clutch disc between two horizontal arbors. Slowly turn the clutch disc while measuring runout. Replace the clutch disc if the clutch disc runout exceeds 0.8 mm (0.031 inch).
Installation Procedure
^ Tools Required
- J 34860 Clutch Alignment Arbor
- J 35271 Flywheel Holder
Notice: Refer to Fastener Notice in Service Precautions.
1. If you removed the flywheel for resurfacing or replacement, install the flywheel (1) to the crankshaft in the same position (3) that the flywheel is removed. Secure the flywheel with the six flywheel bolts (2).
^ Tighten the flywheel bolts for the 1.0 liter engine to 61 Nm (45 ft. lbs.).
^ Tighten the flywheel bolts for the 1.3 liter engine to 78 Nm (57 ft. lbs.).
2. Use J 35271 in order to hold the flywheel stationary.
3. Install the clutch disc to the flywheel with the torsion springs offset toward the transaxle. Use J 34860 in order to center the clutch disk and hold the clutch disc in place on the flywheel.
4. Install the clutch pressure plate to the flywheel. Secure the flywheel with 6 clutch pressure plate cover bolts.
Tighten the clutch pressure plate cover bolts to 23 Nm (17 ft. lbs.).
5. Remove the J 35271 and the J 34860.
6. Lubricate the transaxle input shaft (2) splines and the clutch release bearing with a thin coat of wheel bearing grease GM P/N 1051344 or the equivalent.
7. Lubricate the clutch pilot bearing (1) with a thin coat of the wheel bearing grease GM P/N 1051344 or the equivalent.
8. Install the manual transaxle assembly into the vehicle. Refer to Transaxle Assembly Installation in Manual Transmission/Transaxle.
9. Adjust the clutch pedal free travel. Tighten or loosen the clutch cable adjustment nut (5) until the clutch pedal free travel is within specifications. Refer to Clutch Pedal Free Travel Adjustment.