Shudder, Chatter And/or Vibration During Slow, Tight Turns

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TSB 15-0114	9.75 TRACTION-LOK REAR AXLE – CHATTER/SHUDDER/VIBRATION ON SLOW TURNS – BUILT ON OR BEFORE 3/5/2012
Publication Date: July 24, 2015

This article supersedes TSB 14-0185 to update the Part List, Service Procedure and Service Labor Time Standards.

ISSUE:

Some 2009-2012 F-150 vehicles built on or before 3/5/2012 equipped with a 9.75 traction-lok rear axle assembly may exhibit a shudder, chatter and/or vibration during slow, tight turns. This concern may be more noticeable after cold startup and less noticeable once the rear axle fluid warms up.

ACTION:

Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

Make sure the vehicle is equipped with the original equipment 9.75 traction-lok rear axle assembly before making repairs.

Install the axle vent service kit. Refer to the instruction sheet included in the parts kit.
Install the traction-lok rear axle clutch pack replacement kit. Refer to the instruction sheet included in the parts kit.

9L3Z-4947-D	Clutch Pack Replacement Kit
XY-75W140-QL	Motorcraft SAE 75W-140 Synthetic Rear Axle Lubricant
XL-3	Motorcraft Additive Friction Modifier
TA-30	Motorcraft Silicone Gasket and Sealant
EL3Z-4A058-A	Vent Tube Kit
XG-1-E1	Motorcraft Premium Long-Life Grease

OPERATION	DESCRIPTION	TIME
150114A	2009-2012 F-150: Install Axle Vent Service Kit And Replace Rear Axle Limited-Slip Clutch Packs Following The Service Procedure (Do Not Use With Any Other Labor Operation)	2.3 Hrs.

WARRANTY STATUS

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage.
Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.