One problem related to brake master cylinder has been reported for the 2008 Ford F-650. The most recently reported issues are listed below.
The contact owns a 2008 Ford F-650. The contact was driving 35 mph when he applied the brakes and the pedal was abnormally depressed into the floorboard. The vehicle did not respond and the contact had to shift into neutral in order to stop the vehicle. The vehicle was taken to the dealer who replaced the master cylinder and clutch slade but the brakes continued to fail. The contact stated that the clutch slade cylinder and master cylinder failed and was repaired four times. The manufacturer was notified of the failure who provided a partial reimbursement to the contact for the cost of repairs and a complaint was filed with the manufacturer. The failure mileage was 80,000 and the current mileage was 122,000.