Crown Victoria V8-4.6L SOHC VIN 6 (1996)
Differential Clutch: Customer Interest
Differential - Chatter On Turns
Article No.
96-12-9
06/03/96
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NOISE - "CHATTER" DURING TIGHT TURNS OR TURNS AFTER AN EXTENDED PERIOD OF HIGHWAY DRIVING - TRACTION-LOK
DIFFERENTIAL - 7.5 AND 8.8 INCH RING GEAR REAR AXLES
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AXLE - NEW SERVICE KIT AVAILABLE FOR TRACTION-LOK DIFFERENTIAL - 7.5 AND 8.8 INCH RING GEAR
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AXLE - TRACTION-LOK DIFFERENTIAL - 7.5 AND 8.8 INCH RING GEAR - "CHATTER" NOISE DURING TIGHT TURNS OR TURNS
AFTER AN EXTENDED PERIOD OF HIGHWAY DRIVING
FORD:
1989-96 CROWN VICTORIA, MUSTANG, THUNDERBIRD
LINCOLN-MERCURY:
1989-96 COUGAR, GRAND MARQUIS, TOWN CAR
LIGHT TRUCK:
1989-96 AEROSTAR, BRONCO, E-150, RANGER 1989-97 F-150
1991-96 EXPLORER
ISSUE:
A "chatter" noise can be felt and/or heard during tight turns or turns after an extended period of highway driving. This is due to insufficient specified
friction modifier, or over-shimming of the clutch packs within Traction-Lok differentials.
ACTION:
Install revised Clutch Pack Replacement Kit (F5ZZ-4947-BA for 7.5" ring gear and F5AZ-4947-BA for 8.8" ring gear), with improved friction material,
in the differential after confirming the "chatter" concern with a road test of the vehicle. Refer to the Instruction Sheet within the kit for details.
NOTE:
THE CLUTCH PACK REPLACEMENT KIT INCLUDES SELECTED SHIMS. IT WILL NOT REQUIRE THE ORDERING OF INDIVIDUAL
SHIMS BASED UPON TEARDOWN MEASUREMENTS.
REAR AXLE ASSEMBLY IDENTIFICATION
See metal Service Identification tag for rear axle ring gear size and differential type. The identification tag is attached to the rear axle cover by means of
a cover bolt.
The Clutch Pack Replacement kit (F5ZZ-4947-BA) for the 7.5" ring gear traction-lok rear axle contains the following:
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Two (2) Clutch Packs
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One (1) Pinion Shaft Lockbolt
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One (1) 4 oz. bottle of Friction Modifier
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Two (2) Shims - 0.025" thick
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Two (2) Shims - 0.030" thick
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Two (2) Shims - 0.035" thick
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Two (2) Shims - 0.040" thick
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Two (2) Shims - 0.045" thick
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One (1) Instruction Sheet (I.S. # 7145)
The Clutch Pack Replacement Kit (F5AZ-4947-BA) for the 8.8" ring gear traction-lok rear axle contains the following:
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Two (2) Clutch Packs
