2012 F150 Transmission Bump
Senior Member
Joined: Sep 2013
Posts: 152
Likes: 1
Spline service
Splined shafts running inadequate lube will cause a bump like feeling whenever the shaft tries to slide and binds up. When you are on your brakes, the front end dips and the rear rises. when you come to a complete stop, the splines need to move and the bump occurs. Same thing when the rear squats on takeoff, the splines need to move and the bump occurs. My 157" wheelbase has the two piece shaft and the splines. I lubed them with the correct ford PTFE grease when I got the truck and it's been fine ever since.
Even single piece driveshafts often have these splines where they go into the transfer case or transmission and if they are running dry, the same thing can happen. Just don't use a great deal of grease as the shaft is often open to the transfer case fluid (ATF for ford trucks) and you don't want to contaminate things.
If you can remove 4 bolts you can do this procedure. Replace the clamp with a couple of zip ties and it will hold up just fine. This is the original TSB, and has been superceeded by other numbers that say the same thing:
Pictures here
TSB
10-22-6
• REAR DRIVESHAFT SLIP/BUMP - BUILT ON OR BEFORE 12/1/2009
Publication Date: November 3, 2010
FORD:
2009-2010 F-150
This article supersedes TSB 09-25-5 to update the Service Procedure.
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 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 for this repair.
1. Mark the rear driveshaft flange and differential pinion flange.
2. 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 10-22-6
3. Remove the clamps from the center slip yoke and discard.
4. Remove the rear axle to driveshaft flange fasteners and remove the rear portion of the driveshaft only.
5. Remove the boot.
6. With a clean towel thoroughly clean old grease from the splines on the slip yoke only. Do not use solvent.
7. On 4X4 vehicles only, using hand tools, loosen the center bearing bolts and slide the center bearing fully rearward in the slotted holes.
8. Torque fasteners to 35 lb-ft (48 N-m). Refer to WSM, Section 205-01 for detail.
9. Apply an even coat of Motorcraft® PTFE Lubricant to the internal splines of the yoke only. Amount of lubricant applied to the yoke should be 1/2 of the tube contents. (Figure 2)
Figure 2 - Article 10-22-6
10. Position boot and clamps over the spline portion of the driveshaft. Do not crimp the clamp at this time.
11. Install the rear portion of the driveshaft into the center slip yoke.
12. Fasten driveshaft flange to the rear axle using the previous alignment marks for reference. Refer to WSM, Section 205-01 for detail.
13. Position the clamp heads in-line with the alignment mark on the slip yoke and stud spline shoulder to minimize any balance shift.
14. Crimp clamps using service tool 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.)
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
102206A
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.
Even single piece driveshafts often have these splines where they go into the transfer case or transmission and if they are running dry, the same thing can happen. Just don't use a great deal of grease as the shaft is often open to the transfer case fluid (ATF for ford trucks) and you don't want to contaminate things.
If you can remove 4 bolts you can do this procedure. Replace the clamp with a couple of zip ties and it will hold up just fine. This is the original TSB, and has been superceeded by other numbers that say the same thing:
Pictures here
TSB
10-22-6
• REAR DRIVESHAFT SLIP/BUMP - BUILT ON OR BEFORE 12/1/2009
Publication Date: November 3, 2010
FORD:
2009-2010 F-150
This article supersedes TSB 09-25-5 to update the Service Procedure.
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 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 for this repair.
1. Mark the rear driveshaft flange and differential pinion flange.
2. 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 10-22-6
3. Remove the clamps from the center slip yoke and discard.
4. Remove the rear axle to driveshaft flange fasteners and remove the rear portion of the driveshaft only.
5. Remove the boot.
6. With a clean towel thoroughly clean old grease from the splines on the slip yoke only. Do not use solvent.
7. On 4X4 vehicles only, using hand tools, loosen the center bearing bolts and slide the center bearing fully rearward in the slotted holes.
8. Torque fasteners to 35 lb-ft (48 N-m). Refer to WSM, Section 205-01 for detail.
9. Apply an even coat of Motorcraft® PTFE Lubricant to the internal splines of the yoke only. Amount of lubricant applied to the yoke should be 1/2 of the tube contents. (Figure 2)
Figure 2 - Article 10-22-6
10. Position boot and clamps over the spline portion of the driveshaft. Do not crimp the clamp at this time.
11. Install the rear portion of the driveshaft into the center slip yoke.
12. Fasten driveshaft flange to the rear axle using the previous alignment marks for reference. Refer to WSM, Section 205-01 for detail.
13. Position the clamp heads in-line with the alignment mark on the slip yoke and stud spline shoulder to minimize any balance shift.
14. Crimp clamps using service tool 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.)
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
102206A
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.
Junior Member
Joined: Mar 2014
Posts: 2
Likes: 0
I have a 2012 ford f-150 5.0 and this happens to me also not all the times but sometimes is kinda of annoying but is not a big deal but then again my 2007 BMW 530 xi did it also lol I might have bad luck for this but I'm starting to think is just normal in some cars.
Junior Member
Joined: Mar 2014
Posts: 2
Likes: 0
I test drove a 2012 f150 with 5.0 and 3.55 when I was in town stop light to stop light when it downshift back to 1st gear you could fell a bump it shifted good. but every time it went back to 1st gear bump. My 2010 shifts great smooth as it can be. I thought they fixed all those bump problems?? I hope my new truck that I ordered don't do it?
Ford Customer Service Team
Joined: Oct 2010
Posts: 806
Likes: 2
From: Dearborn, MI
Have you been to your dealer to have them take a look at this? I recommend doing that first. If you're still experiencing this concern after that, send me a PM with your name, phone number, VIN, mileage, and dealer info, and I'll see what I can do.
Ashley