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SECTION 5C

CLUTCH

Caution : Disconnect the negative battery cable before removing or installing any electrical unit or when a tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless otherwise noted.

DESCRIPTION AND OPERATION

GENERAL DESCRIPTION

Driving Members

The driving members consist of two flat surfaces machined to a smooth finish. One of these is the rear face of the engine flywheel, and the other is the pressure plate. The pressure plate is fitted into a steel cover, which is bolted to the flywheel.

Driven Members

The driven member is the clutch disc with a splined hub which is free to slide lengthwise along the splines of the input shaft, but which drives the input shaft through these same splines.
The driving and driven members are held in contact by spring pressure. This pressure is exerted by a diaphragm spring in the pressure plate assembly.

Operating Members

The clutch release system consists of the clutch pedal, the clutch shaft, the fork, and the release bearing.
When pressure is applied to the clutch pedal, the fork pivots on its shaft and the inner end pushes against the release bearing. The bearing then pushes against the release levers in the pressure plate assembly, thereby releasing the clutch.

COMPONENT LOCATOR

HYDRAULIC CLUTCH COMPONENTS

Clutch Release Cylinder/ Lever

(Left-Hand Drive Shown, Right-Hand Drive Similar)

UAA5C010
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  1. Master Cylinder
  2. Clutch Reservoir
  3. Reservoir Hose
  4. Spring Clamp
  5. Release Cylinder Assembly
  6. Release Cylinder
  7. Release Cylinder Bracket
  8. Release Hose
  9. Hydraulic Clutch Pipe
  10. Clamp
  11. Release Lever
  12. Bushing
  13. Pin
  14. main shaft Oil Seal
  15. Bolt
  16. Release Bearing
  17. Bearing Guide Sleeve
  18. O-Ring
  19. Input Shaft Seal
  20. Screw Plug
  21. Magnet
  22. Release pork
  23. Back up lamp switch
  24. washer

Clutch Pedal


UAA5C020
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  1. Clutch Pedal Brace
  2. Nut
  3. Washer Spring
  4. Turn Over Spring
  5. Spring Bushing
  6. Bushing
  7. Pedal Brace Bracket
  8. Bolt
  9. Clutch Pedal Shaft
  10. Clutch Pedal
  11. Pedal Plate Cover
  12. Pin
  13. Bushing
  14. Bushing

Clutch Disc


A103C003
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  1. Flywheel
  2. Clutch Disc
  3. Pressure Plate
  4. Release Bearing

DIAGNOSTIC INFORMATION AND PROCEDURES

CLUTCH OPERATION

Fails to Release

Checks
Action
DEFINITION: When the pedal is pressed to the floor, the shift lever does not move freely in and out of reverse gear.
Check for a loose linkage.
Repair or replace loose linkage, if necessary.
Check for a damaged clutch disc.
Replace the damaged clutch disc.
Check for an improperly installed fork shaft.
Remove and properly reinstall the fork shaft. Very lightly lubricate the fork fingers at the release bearing with wheel bearing grease.
Check for the clutch disc hub binding on the input shaft splines.
Repair or replace the clutch disc hub.
Check for a warped or bent clutch disc.
Replace the warped or bent clutch disc.

Slipping

Checks
Action
Check for the driver improperly operating the vehicle.
Correct the driver's operation of the vehicle as necessary.
Check for an oil-soaked clutch disc.
Correct the leak at its source and install a new clutch disc.
Check for worn facing or facing torn from the disc.
Replace the worn disc with a new disc.
Check for warped pressure plate or a warped flywheel.
Replace the pressure plate.
Check for a driven plate that is not seated.
Start the engine 30 to 40 times. Do not overheat the engine.
Check for a driven plate that is overheated.
Allow the driven plate to cool.

Grabbing (Chattering)

Checks
Action
Check for burned or glazed facing caused by oil on the facing.
Correct the leak at its source and install a new clutch disc.
Check for worn splines on the input shaft.v
Replace the worn input shaft.
Check for a warped pressure plate or a warped fly wheel.
Replace the warped pressure plate or the warped flywheel.
Check for burned or smeared resin on the flywheel or the pressure plate.
Sand off the burned or smeared resin if it is superficial. Replace any or heat-checked parts.

Rattling (Transaxle Click)

Checks
Action
Check for weak retracting springs.
Replace the pressure plate.
Check for a loose release fork.
Remove and reinstall the release fork properly.
Check for oil in the driven plate damper.
Correct the cause of the oil leak and replace the driven disc.
Check for a damaged driven plate damper spring.
Replace the driven disc.

Release Bearing Noise with Clutch Fully Engaged

Checks
Action
Check for the driver improperly operating the vehicle.
Correct the driver's operation of the vehicle as necessary.
Check for a binding release bearing.
Clean and re-lubricate the release bearing. Inspect the release bearing for burrs and nicks.
Check for an improperly installed release lever.
Remove and reinstall the release lever properly.
Check for a weak linkage return spring.
Replace the weak linkage return spring.

Noise

Checks
Action
Check for a worn release bearing.
Replace the worn release bearing.
Check for an improperly installed release lever.
Remove and properly reinstall the fork shaft. Very lightly lubricate the fork fingers at the release bearing with wheel bearing grease.

Pedal Stays on Floor When Disengaged

Checks
Action
Check for binding in the linkage or the release bearing.
Lubricate and freeup the binding linkage or the release bearing.
Check for weak pressure plate springs.
Replace the pressure plate.

Hard Pedal Effort

Checks
Action
Check for binding in the linkage.
Lubricate and free-up the binding linkage.
Check for a worn driven plate.
Replace the worn driven plate.

REPAIR INSTRUCTIONS

ON VEHICLE SERVICE



A103C049
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CLUTCH PEDAL

(Left-hand Drive Shown, Right-hand Drive Similar)

Removal and Installation Procedure

  1. Disconnect the negative battery cable.
  2. Disconnect the return spring from the mount brace.


  3. A103C036
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  4. Remove the nut, the washer, and the pedal mounting shaft.
  5. Installation Notice
    Tightening Torque
    18N•m(13lb-ft)


    A103C067
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  6. Remove the locking washer and the piston rod bolt.
  7. Remove the clutch pedal with the return spring from the vehicle.


A103C025
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CLUTCH DISC AND RELATED COMPONENTS

Tools Required

J-36547 Input shaft seal installer
J-42474 Clutch Arbor

Removal and Installation Procedure

  1. Disconnect the negative battery cable.
  2. Raise and suitably support the vehicle.
  3. Remove the left front wheel. Refer to Section 2E, Tires and Wheels.
  4. Remove the engine under covers. Refer to Section 9N, Frame and Underbody.
  5. Remove the transaxle from the vehicle. Refer to Section 5B. "Five-Speed Manual Transaxle".
  6. Remove the pressure plate bolts and the pressure plate. Support the pressure plate when you remove the last bolt.


  7. A103C044
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    Adjustment Notice :
    Installation Notice
    Tightening Torque
    15N•m (11lb-ft)


    A103C026
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  8. Remove the clutch disc.


  9. A103C027
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  10. Remove the release fork bolt.
  11. Installation Notice
    Tightening Torque
    35N•m(26lb-ft)


    A103C028
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  12. Pull the clutch release shaft upward, out of the transaxle.


  13. A103C029
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  14. Remove the fork and the release bearing from the release bearing guide sleeve.
  15. Installation Notice


    A103C033
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  16. Remove the release lever shaft bushings.
  17. Installation Notice


    A103C030
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  18. Remove the release bearing guide sleeve bolts and the release bearing guide sleeve.
  19. Installation Notice
    Tightening Torque
    5N•m(45lb-in)


    A103C031
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  20. Remove the input shaft seal from the release bearing guide sleeve.
  21. Installation Notice


    A103032
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  22. Remove the O-ring from the groove in the transaxle case.
  23. Installation should follow the removal procedure in the reverse order.


A103C010
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CLUTCH PEDAL ADJUSTMENT (HYDRAULIC)

(Left-Hand Drive Shown, Right-Hand Drive Similar)

Adjustment Procedure

  1. Determine the clutch pedal play. Depress the clutch pedal lightly with your hand and measure the distance when you feel resistance.


  2. A103C051
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  3. Adjust the clutch pedal play. Loosen the lock nut and turn the pushlod. Clutch pedal play should measure 6 to12 mm (0.2 to 0.5 inch). Tighten the locknut after adjustment.


  4. A103C038
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  5. Measure the clutch pedal travel. Press the clutch pedal all the way to the floor. Measure from the starting position to the ending position.


  6. A103C039
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  7. Adjust the clutch pedal travel. Loosen the locknut and turn the bolt. Clutch pedal travel should measure more than 130 mm (5.1 inches). Tighten the locknut after adjustment.


A103C001
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CLUTCH RELEASE POINT ADJUSTMENT (HYDRAULIC)

Adjustment Procedure

  1. Apply the parking brake.
  2. Run the engine at idle speed.
  3. While you move the shift lever into the reverse position, depress the clutch pedal slowly and measure the distance between the point when gear noise is not heard and the point the clutch pedal is completely depressed. The distance should be more than 30 mm (1.2 inches).
  4. If the distance is not more than 30 mm (1.2 inches), check the following:


A103C013
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AIR BLEEDING

    Notice : Bleed the hydraulic system to remove the air which entered when the pipes were disconnected for repairs. The clutch/brake fluid in the clutch/brake reservoir must be maintained at the MIN level or higher during air bleeding. Right-hand drive vehicles use a separate clutch fluid reservoir.

  1. Attach a vinyl hose to the bleeder plug. Place the other end of the vinyl tube in a glass container half-filled with brake fluid.
  2. Slowly pump the clutch pedal several times.
  3. While you press the clutch pedal, loosen the bleeder screw until the fluid starts to run out. Close the bleeder screw.
  4. Repeat Step 3 until there are no air bubbles in the fluid.
  5. Fill the reservoir with clutch fluid up to the MAX level.


A103C046
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CLUTCH MASTER CYLINDER ASSEMBLY

(Left-Hand Drive Shown, Right-Hand Drive Similar)

Removal and Installation Procedure

    Notice : Before disconnecting the reservoir tank hose, remove the clutch/brake fluid from the reservoir tank. Right-hand drive vehicles use a separate clutch fluid reservoir.

  1. Disconnect the negative battery cable.
  2. Disconnect the spring clamp on the master cylinder. Remove the reservoir hose.


  3. B103C001
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  4. Disconnect the pipe connected to the master cylinder.


  5. A103C037
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  6. Remove the locking washer and the piston rod bolt from the clutch pedal and piston rod clevis.
  7. Installation should follow the removal procedure in the reverse order.


  8. B103C002
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  9. Remove the lock nuts on the master cylinder bracket. Remove the master cylinder in the direction of the engine compartment.
  10. Installation Notice
    Tightening Torque
    22N•m(16lb-ft)
  11. Installation should follow the removal procedure in the reverse order.


B103C004
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CLUTCH RELEASE CYLINDER ASSEMBLY

Removal and Installation Procedure

  1. Disconnect the negative battery cable.
  2. Remove the bolt and disconnect the hose from the clutch release cylinder.
  3. Adjustment Notice:


    B103C003
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  4. Remove the clutch release cylinder bolts and remove the release cylinder from the transaxle.
  5. Installation Notice
    Tightening Torque
    60N•m(44lb-ft)
  6. Installation should follow the removal procedure in the reverse order.


UAA5C030
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CLUTCH RESERVOIR

Removal and Installation Procedure

  1. Drain the clutch oil
  2. Disconnect the reservoir hose and remove the clutch reservoir
  3. Installation should follow the removal procedure in the reverse order.

UNIT REPAIR



A103C043
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CLUTCH MASTER CYLINDER

Disassembly and Assembly Procedure

  1. Remove the clutch master cylinder assembly from the vehicle. Refer to "Clutch Master Cylinder Assembly" in this section.
  2. Remove the boot and disconnect the piston stop ring using ring pliers.


  3. A103C048
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  4. Remove the push rod assembly and the piston assembly.
  5. Inspect the clutch master cylinder wall and the piston for wear. Replace the piston if necessary.
  6. Inspect the cup and the piston for wear. Fluid leaks will show wear on the cup and the piston. Replace the cup and the piston if necessary.
  7. Inspect the push rod for wear. Repair the pushrod if necessary.
  8. Installation Notice
  9. Assembly should follow the disassembly procedure in the reverse order.


A103C053
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CLUTCH RELEASE CYLINDER

Disassembly and Assembly Procedure

  1. Remove the clutch release cylinder assembly from the vehicle. Refer to "Clutch Release Cylinder Assembly" in this section.
  2. Remove the bolts and brackets.


  3. A103C041
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  4. Remove the boot and the push rod.


  5. A103C042
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  6. Compress the piston with a driver, and then remove the snap ring with snap ring pliers.
  7. Remove the piston assembly.
  8. Assembly should follow the disassemly procedure in the reverse order.
  9. Installation Notice

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

Application
N•m
Lb-Ft
Lb-In
Clutch Fork to Release Lever Shaft Bolt
35
26
-
Clutch Master Cylinder Locknuts
22
16
-
Clutch Pedal Nut
18
13
-
Pressure Plate to Flywheel Bolts
15
11
-
Release Bearing Guide Sleeve Bolts
5
-
45
Release Cylinder Bolts
60
44
-

SPECIAL TOOLS

SPECIAL TOOLS TABLE


A103C009
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J-36547 Input Shaft Seal Installer

A103C045
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J-42474 Clutch Arbor


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