How do I replace the clutch slave cylinder on my Ford F-150?

The transmission on my Ford F-150 has been acting up when it cycles gears. How do I replace the clutch slave cylinder on my truck?

Answer
You’re right—a worn-out clutch slave cylinder could definitely be the culprit if your transmission seems off. To confirm, you should have your transmission checked by a certified mechanic before going ahead with the replacement.
If the clutch slave cylinder is confirmed to be the issue, follow these steps to replace it:
  1. Open the transmission and remove the old clutch slave cylinder.
  2. Push the clutch release arm toward the front of the transmission unit and insert the new slave cylinder. Tighten the bolts that secure it to the main clutch. Make sure not to remove the plastic strap around the new part. This is the retainer clip that holds the rod in place.
  3. Reattach the hydraulic clutch line and use a wrench to fasten the cap.
  4. Fill the master clutch cylinder with brake fluid.
  5. Bleed the slave cylinder by opening the bleed valve on the side of the cylinder and allowing the fluid to drain until it runs without pockets of air. It is important to get all of the air out.
  6. Cut off the bleed valve and top off the clutch with fresh fluid.
  7. Bleed the slave cylinder once more by opening its bleed valve. Ask someone else to depress the clutch pedal inside the vehicle to get the fluid moving.
  8. Have your helper hold the clutch pedal down as you cut off the bleeder valve flow.
  9. Pump the clutch pedal several times, which will cause the plastic retaining strap from step 1 to break. This indicates the proper function of the clutch slave cylinder.
The entire process should take about 4 hours to complete. If you aren’t feeling confident about the work, you may need to** take your Ford to a transmission shop** for repairs.
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Matthew Macgugan
Answered on Dec 07, 2021
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