Technical Instructions

ATTACHMENT III
OWNER NOTIFICATION PROGRAM M71 FRONT DISC BRAKES


TECHNICAL INSTRUCTIONS

Before starting, verify the condition.

If the car exhibits brake shudder (roughness) during braking, causing the car to vibrate and the steering wheel to shake, replace the front brake rotors and shoe and lining assemblies as described below.

If the car does not exhibit the condition, complete Form 1863 and release the car.

1. Remove both front rotors and front shoe and lining assemblies.
Refer to the 1989 or 1990 Thunderbird/Cougar Shop Manual, Section 12-20 for service details.

2. Install the two (2) new design full cast front brake rotor assemblies included in the Front Brake Service Kit, FOSZ-1L104-A.

3. Install a new set of front disc brake shoe and lining assemlies.

^ If the car is equipped with rear disc brakes, use front shoe and lining kit FOSZ-2001-A.

^ If the car is equipped with rear drum brakes, use front shoe and lining kit F1SZ-2001-A.

CAUTION: THE NEW FULL CAST FRONT BRAKE ROTOR MOUNTING SURFACE IS
4.4 MM THICKER THAN THE CURRENT DESIGN ROTOR. THEREFORE, IT IS REQUIRED THAT ALL TWENTY (20) WHEEL LUG NUTS BE REPLACED WITH THE TWENTY (20) NEW WHEEL LUG NUTS. IF THE CAR IS EQUIPPED WITH ALUMINUM WHEELS AND LOCKING WHEEL LUG NUTS (ONE PER WHEEL), THESE LOCKING NUTS CAN BE REUSED.

4. Rotate the wheel and tire assemblies. Refer to the rotation instructions in the 1989 or 1990 Thunderbird/Cougar Shop Manual, Section 11-01.

NOTE: DO NOT CROSS ROTATE UNI-DIRECTIONAL TIRES.