Trouble Diagnosis - Pontiac FIREBIRD 1972 Service Manual

SECTION 7
CLUTCH, MANUAL TRANSMISSIONS
CONTENTS OF THIS SECTION
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Trouble Diagnosis 7-1 Clutch
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7-6
..................................................
General Description
7-2 Flywheel or Clutch Pilot Bearing
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7-8
Periodic Service Recommendations Starter Ring Gear
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7-9
Lubrication
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7-4 specifications
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On Car Adjustments Clutch 7-9
Clutch Pedal Adjustment
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7-4 Torque
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7-10
Major Repairs
Clutch Control Linkage
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7-5
TROUBLE DIAGNOSIS
THROW-OUT BEARING NOISE WITH HIGH PEDAL EFFORT
CLUTCH FULLY ENGAGED
1. Bind in clutch linkage.
1. Clutch linkage improperly adjusted.
2. Driven plate worn.
2.
Throw-out bearing binding on transmission bearing
retainer.
3. Insufficient tension between clutch fork spring and
ball stud.
4. Fork improperly installed.
5. Weak linkage return spring.
NOISY
1. Worn throw-out bearing.
2. Fork came off ball stud (heavy clicking).
PEDAL STAYS ON FLOOR WHEN
DISENGAGED
1. Bind in clutch linkage.
2. Springs weak in pressure plate.
3. Weak pedal return spring.
NOTE: Weak spnng alone won't leave pedal on
floor.
FAILS TO RELEASE (WITH PEDAL
PRESSED TO FLOOR-SHIFT LEVER WILL
NOT MOVE FREELY I N AND OUT OF
REVERSE GEAR)
1. Improper clutch linkage adjustment.
2. Improper pedal travel.
3. Loose clutch linkage.
4. Faulty pilot bearing.
5. Faulty driven plate.
6. Fork comes off ball stud.
7. Clutch driven plate hub binding on clutch (main
drive) gear spline.
SLIPPING
1. Improper clutch adjustment (no lash).
2. Oil soaked driven plate.