ERICG1

Wayne, have they been just lubing yours, or have they replaced anything?

Z7What

Just been lubing it. This 3rd time they are replacing the driveshaft.

Wayne

Wannafbody

My 09 Silverado has the driveshaft thump as well.

ERICG1

Is your Silverado still under warranty?

MacKenzie001

http://www.ford-trucks.com/forums/11...ery-quite.html


http://www.livernoismotorsports.com/...epair-Kit.html

Not exactly a cheap fix, but hopefully one and done.

tcp2

The spline service is a 1/2 hour job. You can get a boot kit from Ford with a replacement boot and two clamps. Also make sure you use the PTFE (Teflon based) grease specified. Use a twelve point 1/2" socket on the four bolts holding the shaft to the pinion plate on the rear axle.

TSB Main Page
TSB
09-25-5 REAR DRIVESHAFT SLIP/BUMP - BUILT ON OR BEFORE 12/1/2009

Publication Date: December 7, 2009

FORD: 2009-2010 F-150



ISSUE:
Some 2009-2010 F-150 vehicles equipped with a 2 piece driveshaft only and built on or before 12/1/2009 may exhibit a rear driveshaft slip/bump concern on light to moderate acceleration from a stop or when coming to 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 for this repair.

Place orientation marks on the rear driveshaft flange and differential pinion flange.
Mark the center slip yoke barrel across the boot and the clamp crimp heads to the rear shaft spline stud shoulder. (Figure 1)


Figure 1 - Article 09-25-5


Remove the clamps from the center slip yoke and discard.
Remove the rear axle to driveshaft flange fasteners and remove the rear portion of the driveshaft only.
Remove the boot
With a clean towel thoroughly clean old grease from the splines on the slip yoke and the stud shaft. Do not use solvent.
On 4X4 vehicles only, using hand tools, loosen the center bearing bolts and slide the center bearing fully rearward in the slotted holes. Torque fasteners to 35 lb-ft (48 N-m). Refer to WSM, Section 205-01 for detail.
Evenly coat the driveshaft splines with 0.53-0.71 ounces (15-20 grams) of Motorcraft® PTFE Lubricant.
Position boot and clamps over the spline portion of the driveshaft. Do not crimp the clamp at this time.
Install the rear portion of the driveshaft into the center slip yoke.
Fasten driveshaft flange to the rear axle using the previous alignment marks for reference. Refer to WSM, Section 205-01 for detail.
Position the clamp heads in-line with the alignment mark on the slip yoke and stud spline shoulder to minimize any balance shift.
Crimp clamps using ESST 205-343.
Other driveline noise conditions will not be corrected with this procedure. Refer to appropriate WSM for diagnosis and repair for engagement clunk, hesitation during light throttle 1-2 upshift, harsh downshift while coasting 15 MPH (24 Km/h) and, shudder/vibration on moderate to hard acceleration. See other applicable Technical Service Bulletins for details.



PART NUMBER PART NAME
XG-8 Motorcraft® PTFE Lubricant
9L3Z-4421-A Spline Boot
9L3Z-3B478-A Clamp (2 Req.)


OTHER APPLICABLE ARTICLES:
09-15-4, 09-11-5, 09-22-12

WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIME
092505A 2009-2010 F-150: Clean And Lubricate The Splines Of The Driveshaft Slip Yoke Following The Service Procedure (Do Not Use With Any Other Labor Operations) 0.5 Hr.

DEALER CODING
BASIC PART NO. CONDITION CODE
4602 41

boy_welder2000

My 2010 with the one piece driveshaft has the slip-bump also, but I do not hear any noise from the cam phasers.

BucketMan

I have never lubed the joint in the boot. I have dropped the driveshaft, then cleaned and lubricated the spines from the output of the transmission and the driveshaft, lubricated with a high quality synthetic lithium grease and the slip bump is totally gone smooth as glass.

joe rpa

I have a 2010XLT 2wd screw, 61k miles - and found this here:
TSB: 12-7-13
Article Supersedes TSB 10-22-06 to update part list

some 2009-2012 F-150's equipped with 2-piece drive shaft only and built on or before 7/30/2012 may exhibit a rear driveshaft slip/bump concern on light to moderate acceleration from a stop or when coming to a stop with light braking.

The list below are parts used with TSB 12-07-13:
1ea. 9L3Z*4421*A Boot
1ea. 9L3Z*3B478*A Clamp
XG*8* Lubricant – Teflon

brought this to my mechanic, and while doing other maintenance, the directions of this TSB took care of the clunk. now it's like it's new.