PDF associated:
/PT 18-0006.pdf
JDA4196 PT 18 0006 Brake Fade Excessive Pedal Travel E250 E350 F250 F350 1991 89 E250 E350 F250 F350 Excessive brake pedal travel or brake pedal fade may occur during application when heavily loaded or on steep downhill grades This may be caused by the original brake caliper piston material According to Ford TSB 91 20 8 changing to phenolic piston equipped calipers may correct problem Applies to 1991 89 E 250 E 350 F 250 F 350 trucks built prior to 5 1 91 Before replacing calipers be sure to perform brake system tests that eliminate other possible vehicle problems that might cause the fade or excessive pedal travel Refer to the Ford Light Truck Shop Manual Section 12 01 for diagnostic procedures and adjustments that may be necessary If adjustment does not correct concern replace both calipers with phenolic piston equipped remanufactured units Refer to CARDONE catalog for correct part numbers CARDONE loaded calipers are complete ready to install and use the correct boots and seals for phenolic pistons Application Problem Cause Solution Note Phenolic piston Metal piston