Differential - Chattering On Turns

Article No.
00-8-4

DATE:
04/17/2000

^ NOISE - "CHATTERING" FROM REAR AXLE HEARD ON TURNS OR WHEN CORNERING - VEHICLES WITH LIMITED SLIP AXLE

^ AXLE - LIMITED SLIP - REAR AXLE "CHATTERING" NOISE ON TURNS OR WHEN CORNERING

FORD: 1999-2000 E-150, EXPEDITION, F-150
LINCOLN: 1999-2000 NAVIGATOR

ISSUE
A "chattering" noise from the rear axle may be heard when turning or cornering. This may be due to differentials containing clutch packs that have been gauged too tightly.

ACTION
Install new Traction-Lok Clutch Pack Kit. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

1. Confirm axle chatter with road test.

2. Once axle chatter has been confirmed, remove and discard old clutch packs, shims and Belleville springs. Refer to the appropriate Workshop Manual for details.

NOTE: Subtract O.25 mm (0.010") from feeler gauge reading taken during shim selection using service tools and procedures indicated on instruction sheets packaged with kits.

3. Install Clutch Pack Kit F75Z-4947-AA for 9.75" ring gear Traction-Lok axles or Clutch Pack Kit F75Z-4947-AB for 10.25 " ring gear Traction-Lok axles. For ring gear size and differential type, see embossed metal tag attached to rear axle cover. Refer to the appropriate Workshop Manual for details.

PART NUMBER PART NAME

F752-4947-AA Clutch Pack Kit (9.75" Ring Gear)
F75Z-4947-AB Clutch Pack Kit (10.25" Ring Gear)

OTHER APPLICABLE ARTICLES: NONE

Operation Information:

Operarion numbers description and times

Dealer Coding:

Dealer part number and condition code

Oasis Coding:

Oasis codes

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage.