Auto Repair 2009-2010 Ford F-150 Rear Driveshaft Slip/ Bump

Auto Repair 2009-2010 Ford F-150 Rear Driveshaft Slip/ Bump

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ISSUE Some 2009-2010 F - 150 vehicles equipped with a 2 -piece driveshaft only and built on or before 12/1/2009 may exhibit rear driveshaft slip / bump concern light to moderate acceleration from a stop or when coming to a stop with light braking . ACTION Follow the Service Procedure steps to correct the condition. SERVICE PROCEDURE It is not necessary to remove the entire driveshaft from the vehicle to the repair . 1 . Place a mark on the driveshaft flange orientation and the rear differential pinion flange . 2 . Mark the center slip yoke barrel in the boot and clamp crimp heads to the rear axle stud spline shoulder . ( Figure 1 ) 3 . Remove the clamps from the center slip yoke and discard .4 . Remove the rear axle to the driveshaft flange fasteners and remove the rear driveshaft alone . 5 . Remove boot 6 . With a clean towel thoroughly clean the old grease from the splines on the slip yoke and pivot stud . Do not use solvents . 7 . On 4X4 vehicles only , using hand tools , loosen the bolts and slide the center bearing to center bearing is fully behind the slotted hole . Tightening torque of 35 lb - ft ( 48 N • m ) . See WSM , Section 205-01 for details . 8 . Evenly coat the driveshaft splines with 0.53 to 0.71 ounces ( 15-20 grams ) of Motorcraft ® PTFE Lubricant . 9 . Position boot and clamps over the spline of driveshaft . Do not crimp clamp current . 10 . Install the rear driveshaft slip yoke to the center . 11 . Fasten driveshaft leads to the rear axle using the previous alignment marks for reference . See WSM , Section 205-01 for details . 12 . Position the clamp head in-line with the alignment mark on the slip yoke and stud spline shoulder to minimize the shifting balance . 13 . Crimp clamp using ESST 205-343 . Conditions driveline another voice will not be corrected with this procedure . See the appropriate WSM for diagnosis and repair for engagement sounds , hesitation during light throttle 1-2 upshift , harsh downshift while cruising 15 MPH ( 24 km / h ) and , shudder / vibration on moderate to hard acceleration . See other applicable Technical Service Bulletins for details .