Clutch Drum Component and F4 One-Way Clutch Inspection

CLUTCH DRUM COMPONENT AND F4 ONE-WAY CLUTCH INSPECTION





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

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)
^ 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. (M)
^ 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.

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.

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.

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.

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.

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.