Ford 2003 Mustang Workshop Manual page 2508

14. Remove the reverse clutch piston inner and outer seals.
Assembly
1. NOTE: One tab that locks the reverse clutch drum into the reverse sun shell may be removed.
This is done for balancing purposes.
Inspect the clutch cylinder thrust surfaces, piston bore and clutch plate serrations for scores or
burrs. Minor scores or burrs may be removed with crocus cloth. Install a new clutch cylinder if
badly scored or damaged.
2. Check the fluid passage in the clutch cylinder for obstructions. Clean out all fluid passages.
Inspect clutch piston for scores and install new if necessary. Inspect the check balls for freedom
of movement and correct seating.
3. Check the clutch release spring for distortion and cracks. Install a new spring (including wave
spring) if distorted or cracked.
4. Inspect the composition clutch plates, steel clutch plates and clutch pressure plate for worn or
scored bearing surfaces. Install new parts if they are deeply scored or burred.
5. Check the clutch plates for flatness and fit on the clutch hub serrations. Discard any plate that
does not slide freely on serrations or that is not flat.
6. Check the clutch hub thrust surfaces for scores and clutch hub splines for wear.
7. NOTE: The piston check ball must be present and moving freely.
Install a new reverse clutch piston inner and outer seals.