Front Brakes - Thumping/Clacking Noise While Braking

Article No.
94-23-5

11/14/94

^ BRAKES - FRONT DISC - "THUMPING/CLACKING" NOISE WHILE BRAKING

^ NOISE - "THUMPING/CLACKING" WHILE BRAKING - FRONT DISC BRAKES

FORD:
1994-95 MUSTANG, TAURUS, THUNDERBIRD

LINCOLN-MERCURY:
1994-95 CONTINENTAL, COUGAR, SABLE

ISSUE:
Some customers may hear a thumping/clacking noise proportional to wheel speed during braking. This may be due to the initial cut (finish) on the front rotors and by the shoe/lining assembly contacting the leading edge of the caliper assembly abutment. If this condition exists, witness marks will be visible on the shoe/lining assembly plate, and the caliper anchor plate. Brake performance is unaffected by this condition.

ACTION:
Refer to the following procedure for service details.

NOTE:
THIS CONCERN IS EXHIBITED ON A LIMITED NUMBER OF VEHICLES WITH 500 MILES (800 KM) OR LESS. HOWEVER, IT SHOULD BE GONE BY 500 MILES (800 KM).

SERVICE PROCEDURE

1. Ensure that the vehicle has more than 500 miles (800 km) of service.

2. Turn both front rotors with a Rotunda "On-The-Car Brake Lathe". This repair method is more effective than "off-car" brake rotor turning because it allows the steering knuckle to serve as a pilot for the rotor, resulting in improved runout and surface finish.

NOTE:
USE THE APPROPRIATE MODEL/YEAR SERVICE MANUAL, SECTION 06-03.

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS:
Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME
942305A Machine Both Front Disc 1.3 Hrs.
Brake Rotors On Vehicle -
Mustang
942305B Machine Both Front Disc 1.7 Hrs.
Brake Rotors On Vehicle -
Taurus/Sable, Continental
942305C Machine Both Front Disc 1.7 Hrs.
Brake Rotors On Vehicle -
Thunderbird/Cougar

DEALER CODING
BASIC PART NO. CONDITION CODE
1125 56

OASIS CODES: 301000, 702100