CLUTCH DRUM COMPONENT AND F4 ONE-WAY CLUTCH INSPECTION

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1. Inspect the lining of all drive plates. (C1)

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  • If the lining is flaking or has changed color, or if it is worn or the print mark is wearing away, replace it with a new drive plate.
  • When replacing, inspect the contact surfaces between the retaining plate, driven plate and drive plate.
  • If they are scratched or have changed color, replace with new parts.

  Note
  • Before replacing with new drive plates, soak them at least 2 h in ATF.

2. Inspect the lining of all drive plates. (C4)

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  • If the lining is flaking or has changed color, or if it is worn or the print mark is wearing away, replace it with a new drive plate.
  • When replacing, inspect the contact surfaces between the retaining plate, driven plate and drive plate.
  • If they are scratched or have changed color, replace with new parts.

  Note
  • Before replacing with new drive plates, soak them at least 2 h in ATF.

3. Using vernier calipers, measure the free length of the piston return spring.

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  C1, C4 clutch return spring free length

  Standard: 26.29 mm {1.04 in}

  • If it less than the specification, replace the piston return spring with a new one.

4. Inspect the lining of all drive plates. (C2)

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  • If the lining is flaking or has changed color, or if it is worn or the print mark is wearing away, replace it with a new drive plate.
  • When replacing, inspect the contact surfaces between the retaining plate, driven plate and drive plate.
  • If they are scratched or have changed color, replace with new parts.

  Note
  • Before replacing with new drive plates, soak them at least 2 h in ATF.

5. Inspect the lining of all drive plates. (C3)

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  • If the lining is flaking or has changed color, or if it is worn or the print mark is wearing away, replace it with a new drive plate.
  • When replacing, inspect the contact surfaces between the retaining plate, driven plate and drive plate.
  • If they are scratched or have changed color, replace with new parts.

  Note
  • Before replacing with new drive plates, soak them at least 2 h in ATF.

6. Using vernier calipers, measure the free length of the piston return spring.

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  C2 clutch return spring free length

  Standard: 20.02 mm {0.79 in}

  • If it less than the specification, replace the piston return spring with a new one.

7. Using vernier calipers, measure the free length of the piston return spring.

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  C3 clutch return spring free length

  Standard: 21.03 mm {0.83 in}

  • If it less than the specification, replace the piston return spring with a new one.

8. Using a dial gauge, measure the inner diameter of the input shaft component bushings.

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  Input shaft component bushing inner diameter

  18.000—18.025 mm {0.7087—0.7096 in}

  Caution
  • Measure at different places and take an average. If it exceeds the specification, replace the input shaft component with a new one.
  • When the input shaft component is replaced, inspect the contact surface opposed to the intermediate shaft.
  • If the surface of it is scratched or has changed color, replace the intermediate shaft with a new one.

9. Using a dial gauge, measure the inner diameter of the clutch hub bushings.

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  Clutch hub bushing inner diameter

  Front side: 23.037—23.062 mm {0.90697—0.90795 in}
  Rear side: 23.037—23.062 mm {0.90697—0.90795 in}

  Caution
  • Measure at different places and take an average. If it exceeds the specification, replace the clutch hub with a new one.
  • When the clutch hub is replaced, inspect the contact surface opposed to the input shaft component.
  • If the surface of it is scratched or has changed color, replace the input shaft component with a new one.

10. Using a dial gauge, measure the inner diameter of the clutch hub component bushings.

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  Clutch hub component bushing inner diameter

  Front side: 33.312—33.337 mm {1.31150—1.31248 in}
  Rear side: 33.312—33.337 mm {1.31150—1.31248 in}

  Caution
  • Measure at different places and take an average. If it exceeds the specification, replace the clutch hub component with a new one.
  • When the clutch hub component is replaced, inspect the contact surface opposed to the clutch hub.
  • If the surface of it is scratched or has changed color, replace the clutch hub with a new one.

11. Verify that the F4 one-way clutch rotates when the clutch hub is secured and rotated clockwise, and that it does not rotate when the clutch hub is rotated counterclockwise.

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