DESCRIPTION OF ISSUE

A REVISED BRAKE LINING NOISE INSULATOR RESULTED IN A DECREASE IN THE THERMAL INSULATION BETWEEN THE BRAKE LINING AND THE FRONT BRAKE CALIPER PISTON. THIS CAUSED GREATER HEAT TRANSFER TO THE CALIPER PISTONS WITH THE POTENTIAL TO OVERHEAT THE BRAKE FLUID AND DIMINISH BRAKE EFFECTIVENESS DURING SEVERE BRAKING CONDITIONS.
INCREASED STOPPING DISTANCES AND INABLILITY TO HOLDVEHICLES ON A STEEP GRADE RESULTS IN INCREASED RISK OF ACCIDENT IN THE EVENT OFA SUDDEN STOP OR WHEN CONSTANT BRAKING IS NEEDED TO MANEUVER THROUGH AREAS WITHSTEEP GRADES.

DESCRIPTION OF COMPONENT

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:SHOES/LININGS

RESOLUTION

ADD SNAP-IN INSULATORS THAT ATTACH TO EACH OF THE FRONT BRAKE CALIPER PISTONS. IN ADDITION, VEHICLES WITH 7.5 L ENGINES WILL HAVE INSULATION ADDED TO THE ENGINE COMPARTMENT BRAKE LINES.

NOTES

SYSTEM: BRAKES; FRONT BRAKE LINING.VEHICLE DESCRIPTION: F250 AND F350 TRUCKS WITH 7.3 L DIESEL AND 7.5 L EFIENGINES ; F250 AND F350 4X4 MODELS WITH 5.8 L EFI ENGINES.NOTE: FORD RECOMMENDS VEHICLE OPERATORS DO NOT EXCEED THE GCWR AND GVWR OF THEIRVEHICLES, AND PROPER MAINTENANCE OF THE BRAKES ON THESE VEHICLES AND ANY TRAILERPARTICULARLY WHEN OPERATING IN MOUNTAINOUS AREAS WITH LONG, STEEP GRADES.

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