Brakes - Vibration/Rotor Wobble Service Tips

Article No.
93-22-4

10/27/93

^ BRAKES - FRONT ROTOR - MISAPPLICATION MAY RESULT IN ROTOR WOBBLE, BRAKE DRAG, ACCELERATED BRAKE WEAR AND ROUGHNESS - SERVICE TIPS

^ VIBRATION - MISAPPLICATION OF FRONT BRAKE ROTORS - SERVICE TIPS

^ WHEELS - MISAPPLICATION OF FRONT BRAKE ROTORS MAY RESULT IN WHEEL WOBBLE, LOOSE LUG NUTS AND BROKEN WHEEL STUDS - SERVICE TIPS

FORD:
1986-93 TAURUS

LINCOLN-MERCURY:
1986-93 SABLE
1988-92 CONTINENTAL

ISSUE:
The misapplication of front brake rotors may result in various front wheel and front brake concerns. The hub pilot hole diameters of front brake rotors, for use on vehicles built on or after 2/1/91 and before 2/1/91, are different. The rotors are NOT interchangeable.

ACTION:





Be certain that the correct front brake rotor is installed. Refer to the Parts Block in this article for proper usage.





The pilot hole diameter of the current rotor (2/1/91 and later) is 7 mm (0.28") larger than that of the earlier rotor (before 2/1/91), refer to Figure 1. If a before 2/1/91 rotor (F1OY-1125-B) is installed on a vehicle built on or after 2/1/91, the rotor will not seat over the hub properly causing the rotor and wheel to wobble.

This can cause...

^ Loosening of the lug nuts

^ Breakage of the wheel studs

^ Brake drag

^ Accelerated brake wear

^ Brake roughness

^ Vibration

If the later style rotor (F2DZ-1125-A) is used on the earlier vehicle, a wheel runout vibration may result.

OTHER APPLICABLE ARTICLES: 91-8-9
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 301000, 306000, 390000