Ford 2003 Mustang Workshop Manual page 2517

15. NOTE: The seals are solid seals, however, when installing new seals use scarf-cut seals.
Remove the forward clutch input shaft seals.
16. Make sure the check ball in the clutch cylinder is free and clean. Check for correct seating.
Assembly
1. 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 the clutch piston for scores and install a new piston if necessary. Inspect check balls for
freedom of movement and correct seating.
3. Check the clutch release spring for distortion and cracks. Install a new spring (including the
wave spring) if distorted or cracked.
4. Inspect 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 the clutch hub splines for wear.
7. NOTE: To aid handling, the forward clutch assembly may be set in the extension housing or a
hole in the work bench.
Install the inner and outer forward clutch piston seals. Note the direction of the sealing rings
before installation.