Hub-Mount Brake Rotor Machining Equipment: Overview

Article No.
98-5A-5

03/18/98

^ BRAKES - AVAILABILITY OF HUB-MOUNT BRAKE
ROTOR MACHINING EQUIPMENT

^ BRAKE ROTOR MACHINING - AVAILABILITY OF
HUB-MOUNT BRAKE ROTOR MACHINING
EQUIPMENT

FORD:
1993 FESTIVA
1993-94 TEMPO
1993-97 PROBE, THUNDERBIRD
1993-98 CROWN VICTORIA, ESCORT, MUSTANG, TAURUS
1994-97 ASPIRE
1995-98 CONTOUR

LINCOLN-MERCURY:
1993-94 TOPAZ
1993-97 COUGAR
1993-98 CONTINENTAL, GRAND MARQUIS, MARK VIII, SABLE, TOWN CAR, TRACER
1995-98 MYSTIQUE

LIGHT TRUCK:
1993-96 BRONCO
1993-97 AEROSTAR, F SUPER DUTY, F-250 HD, F-350
1993-98 ECONOLINE, EXPLORER, F-150, F-250 LD, RANGER, VILLAGER
1995-98 WINDSTAR
1997-98 EXPEDITION, MOUNTAINEER
1998 NAVIGATOR
1999 SUPER DUTY F SERIES

ISSUE:
Hub-mount brake rotor machining equipment from Rotunda is now approved for warranty and service use. Brake roughness consists of one or more of the following symptoms while braking:

^ Steering wheel vibration/nibble

^ vibration

^ Brake pedal pulsation

Brake roughness is caused by:

^ Uneven rotor wear known as Disc Thickness
Variation (DTV). DTV is caused by excessive
Lateral Run-Out (LRO) or overtorqued wheel lug
nuts

^ Non-uniform lining transfer

ACTION:
Use Rotunda Hub-Mount Lathe / Pro-Cut (201-00002) to service vehicles with brake roughness. The hub-mount lathe removes DTV, lining transfer, and on-vehicle rotor LRO. The hub-mount lathe has the following advantages over caliper-mount lathes:

^ Improved rotor LRO and "dishing" tolerances

^ Ability to machine rear rotors on live axles, except for trucks with dual rear wheels

^ Easier set-up

Refer to the Service Procedure for details.

PART NUMBER PART NAME

F6AZ-9L494-AA High Temperature Nickel Anti-Seize
Lubricant

OTHER APPLICABLE ARTICLES: NONE

SUPERSEDES: 98-4-5

WARRANTY STATUS: INFORMATION ONLY

OASIS CODES: 301000, 702300, 703000, 703400