Crown Victoria V8-4.6L SOHC VIN 6 (1996)
Technical Service Bulletin # 98-5A-5
Date: 980318
Hub-Mount Brake Rotor Machining Equipment
Article No.
98-5A-5
03/18/98
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BRAKES - AVAILABILITY OF HUB-MOUNT BRAKE
ROTOR MACHINING EQUIPMENT
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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:
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Steering wheel vibration/nibble
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vibration
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Brake pedal pulsation
Brake roughness is caused by:
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Uneven rotor wear known as Disc Thickness
Variation (DTV). DTV is caused by excessive
Lateral Run-Out (LRO) or overtorqued wheel lug
nuts
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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:
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Improved rotor LRO and "dishing" tolerances
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Ability to machine rear rotors on live axles, except for trucks with dual rear wheels
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Easier set-up
