Halfshaft Bolt Answers (all threads merged)
- Thread starter dbk
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This just happened to my friend with the May 06 build date Tungsten 06.
Is there a "permanent" fix for this? Can you put a lock wire on the bolts or what is everybody doing to prevent this from happening again? Ford told him he already has the upgraded parts and the car is not driven all that much. :confused
Is there a "permanent" fix for this? Can you put a lock wire on the bolts or what is everybody doing to prevent this from happening again? Ford told him he already has the upgraded parts and the car is not driven all that much. :confused
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I apologize if my post was not clear. His car is a late 06 with a build date of May 06. He has the upgraded parts but still had the problem.
dbtgt
One lucky SOB to own a GT
My axle bolts are now "loctite-ed" and safety wired. Short of the bolt heads just breaking off, I don't see any way they can come loose at this point. :biggrinagentf1 said:
Red Rocket
GT Owner
Same here DBTGT - I don't understand how anyone could have a problem after upgrading to the new bolts and washers, unless either the tech was a slouch or re-installed the old bolts. Something wrong here. More info required. In the meantime I ain't worried - drive my car like hell when I can. If it breaks I have a cell phone. Once you've had a Ferrari nothing surprises you anymore.
AtomicGT
GT Owner
This problem seems to be disappearing over the last few months as to new numbers of cars effected. Does anyone know of any replacement washers and bolts failing? If it was mentioned in above threads, please excuse this query.
Just picked my GT up from Burch Ford in La Habra. They replaced the halfshaft bolts and washers as well as the other bolts that are not reusable.
My car is an 06 model#112. It had the soft light colored washers, but the bolts were not loose, 1800 miles on the car. Mike Hogan, Burch service manager done an exceptional job, in and out in two days, and NO CHARGE.
GREAT DEALER, GREAT SERVICE!!!!!!
My car is an 06 model#112. It had the soft light colored washers, but the bolts were not loose, 1800 miles on the car. Mike Hogan, Burch service manager done an exceptional job, in and out in two days, and NO CHARGE.
GREAT DEALER, GREAT SERVICE!!!!!!
jaybnve
GT Owner
I recently had the bolts replaced when I had the car in to get my new clutch, and thought the condition of the washers was interesting. I did not have a failure of the bolts, but the washers definitely showed signs of overtorquing; they are really thick washers, and they are bent, as shown in this photo:
That is a really thick washer, and based on my experience, anyway, the force required to bend a washer that thick would indicate severe overtorquing of the associated fasteners. When torqued to the correct value (23 ft-lbs, I think), the new washers did not show any noticeable distortion.
That is a really thick washer, and based on my experience, anyway, the force required to bend a washer that thick would indicate severe overtorquing of the associated fasteners. When torqued to the correct value (23 ft-lbs, I think), the new washers did not show any noticeable distortion.
timcantwell
Le Mans 2010 Sponsor * Moderator
Question for DBTGT
David,
Did you take any pictures of your "fixed" bolts with the safety wiring? Did you drill your own bolt heads or did you purchase a race part? I am also curious if anyone else has safety wired their halfshaft bolts. Both of my cars are alarmingly close in VIN to those that experienced failures. I think I have some winter projects ahead!
David,
Did you take any pictures of your "fixed" bolts with the safety wiring? Did you drill your own bolt heads or did you purchase a race part? I am also curious if anyone else has safety wired their halfshaft bolts. Both of my cars are alarmingly close in VIN to those that experienced failures. I think I have some winter projects ahead!
Red Rocket
GT Owner
Here is a recent service bulletin that just came out a few days ago, TSB 06-23-08
FORD: 2005-2006 Ford GT
This article supersedes TSB 05-10-13 to update the Service Procedure and vehicle model years.
ISSUE:
Some 2005-2006 Ford GT vehicles may exhibit a transaxle oil leak at the transaxle output-to-halfshaft attaching flange. This is due to oil migrating between the splines of the transaxle output shaft and the splines of the output flange.
ACTION:
Seal the outer end of the splines. Refer to the following Service Procedure.
SERVICE PROCEDURE
Remove and discard the six (6) bolts that attach the inner CV joint to the transaxle differential output shaft flange (Figure 1). Retain the three (3) plate washers for reuse.
Figure 1 - Article 06-23-8 (see below)
Position the inner CV joint away from the transaxle output shaft flange.
Remove the two (2) bolts and washer that retain the differential output shaft flange to the differential output shaft. DO NOT REMOVE THE OUTPUT FLANGE.
Clean the outer end of the differential output shaft, and the inner end of the output flange with Motorcraft® Silicone Gasket Remover (ZC-30) and Motorcraft® Metal Surface Prep (ZC-31). Follow the directions on the packaging.
Apply a 0.2" (5 mm) bead of Motorcraft® Gasket Maker (TA-16) in a circular pattern to the end of the output shaft over the splines.
NOTE: THE RETAINER WASHER MUST BE REINSTALLED WITHIN 4 MINUTES, IF NOT, THE PARTIALLY CURED SEALANT MUST BE REMOVED AND THE AREA RE-CLEANED WITH METAL SURFACE PREP (ZC-31).
Install the retaining washer and the two (2) bolts. Tighten the bolts in two (2) stages as follows:
Stage 1: Tighten both bolts to 15 lb-ft (20 N-m)
Stage 2: Tighten both bolts to 22 lb-ft (30 N-m)
NOTE: APPLY THREADLOCK AND SEALER (TA-25) TO BOLT THREADS PRIOR TO INSTALLATION
Attach the inner CV joint to the output flange using new bolts and the original plate washers. Tighten the new halfshaft bolts in a star pattern in two (2) stages as follows:
Stage 1: Alternately tighten halfshaft bolts to 30 lb-ft (40 N-m)
Stage 2: Loosen halfshaft bolts one (1) full turn one at a time. Tighten to 21 lb-ft (28 N-m), then tighten an additional 90° (1/4 turn). Repeat for remaining halfshaft bolts in a circular pattern.)
PART NUMBER PART NAME
4G7Z-4529-AA Bolts
TA-25 Motorcraft® Threadlock And Sealer
ZC-30 Motorcraft® Silicone Gasket Remover
ZC-31 Motorcraft® Metal Surface Prep
TA-16 Motorcraft® Gasket Maker
WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
OPERATION DESCRIPTION TIME
MT062308 Claim Additional Diagnosis Or Labor Performed As Actual Time Actual Time
DEALER CODING
BASIC PART NO. CONDITION CODE
4851 d8
--------------------------------------------------------------------------------
NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.
Copyright © 2006 Ford Motor Company
BTW, the problem was deduced to be over-torquing of the bolts, along with the washers not being hardened enough (as many owners suspected). With a little creative thought one can see how this TSB can be interpreted to cover a full warranty fix for the half-shaft bolt problem, for those with recalcitrant dealers.
FORD: 2005-2006 Ford GT
This article supersedes TSB 05-10-13 to update the Service Procedure and vehicle model years.
ISSUE:
Some 2005-2006 Ford GT vehicles may exhibit a transaxle oil leak at the transaxle output-to-halfshaft attaching flange. This is due to oil migrating between the splines of the transaxle output shaft and the splines of the output flange.
ACTION:
Seal the outer end of the splines. Refer to the following Service Procedure.
SERVICE PROCEDURE
Remove and discard the six (6) bolts that attach the inner CV joint to the transaxle differential output shaft flange (Figure 1). Retain the three (3) plate washers for reuse.
Figure 1 - Article 06-23-8 (see below)
Position the inner CV joint away from the transaxle output shaft flange.
Remove the two (2) bolts and washer that retain the differential output shaft flange to the differential output shaft. DO NOT REMOVE THE OUTPUT FLANGE.
Clean the outer end of the differential output shaft, and the inner end of the output flange with Motorcraft® Silicone Gasket Remover (ZC-30) and Motorcraft® Metal Surface Prep (ZC-31). Follow the directions on the packaging.
Apply a 0.2" (5 mm) bead of Motorcraft® Gasket Maker (TA-16) in a circular pattern to the end of the output shaft over the splines.
NOTE: THE RETAINER WASHER MUST BE REINSTALLED WITHIN 4 MINUTES, IF NOT, THE PARTIALLY CURED SEALANT MUST BE REMOVED AND THE AREA RE-CLEANED WITH METAL SURFACE PREP (ZC-31).
Install the retaining washer and the two (2) bolts. Tighten the bolts in two (2) stages as follows:
Stage 1: Tighten both bolts to 15 lb-ft (20 N-m)
Stage 2: Tighten both bolts to 22 lb-ft (30 N-m)
NOTE: APPLY THREADLOCK AND SEALER (TA-25) TO BOLT THREADS PRIOR TO INSTALLATION
Attach the inner CV joint to the output flange using new bolts and the original plate washers. Tighten the new halfshaft bolts in a star pattern in two (2) stages as follows:
Stage 1: Alternately tighten halfshaft bolts to 30 lb-ft (40 N-m)
Stage 2: Loosen halfshaft bolts one (1) full turn one at a time. Tighten to 21 lb-ft (28 N-m), then tighten an additional 90° (1/4 turn). Repeat for remaining halfshaft bolts in a circular pattern.)
PART NUMBER PART NAME
4G7Z-4529-AA Bolts
TA-25 Motorcraft® Threadlock And Sealer
ZC-30 Motorcraft® Silicone Gasket Remover
ZC-31 Motorcraft® Metal Surface Prep
TA-16 Motorcraft® Gasket Maker
WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
OPERATION DESCRIPTION TIME
MT062308 Claim Additional Diagnosis Or Labor Performed As Actual Time Actual Time
DEALER CODING
BASIC PART NO. CONDITION CODE
4851 d8
--------------------------------------------------------------------------------
NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.
Copyright © 2006 Ford Motor Company
BTW, the problem was deduced to be over-torquing of the bolts, along with the washers not being hardened enough (as many owners suspected). With a little creative thought one can see how this TSB can be interpreted to cover a full warranty fix for the half-shaft bolt problem, for those with recalcitrant dealers.
Attachments
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Red Rocket
GT Owner
Red Rocket
GT Owner
Just to repeat what I have said before on previous threads about the axle bolts (there are quite a few of those threads - who can read them all except Joey? :wink ); I strongly recommend owners get a complete safety check of their cars at the earliest convenience, whether or not you want to replace the axle bolts.
When I had my bolts done a few months ago (thanks to alerts posted at the Forum), my tech found one of the axle bearing nuts was a bit loose; also that one of the brake calipers had loose screws and one was even missing! So while you are there get the technician to check everything he can. Maybe even the spark plugs! At warp speed some of these things might fall off, and who knows - it might be something important!
BTW finally figured out how to post the Service Bulletin here - see the attachment
When I had my bolts done a few months ago (thanks to alerts posted at the Forum), my tech found one of the axle bearing nuts was a bit loose; also that one of the brake calipers had loose screws and one was even missing! So while you are there get the technician to check everything he can. Maybe even the spark plugs! At warp speed some of these things might fall off, and who knows - it might be something important!
BTW finally figured out how to post the Service Bulletin here - see the attachment
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B O N Y
MODERATOR & FGT OWNER
gtjoey said:
JOEY, baby, darlin, turkey-muncher...
Just checked my half shaft, am recoverying from surgery and glad to see that the shaft and nuts continue to repose. When is Indy?
B O N Y
MODERATOR & FGT OWNER
B O N Y
MODERATOR & FGT OWNER
gtjoey said:
sure you must be referring to the DBK & F nursery. Understand they have decided to call their first born, BONY
arty :tongue arty
dbtgt
One lucky SOB to own a GT
As Red Rocket says, check your rear axle hub nuts for torque. Many have loosened up which can easily be seen with the wheel removed. The painted witness marks will reveal any movement of the nut. The proper torque value is 250 ft. lbs.. I am told that experience shows that once re-torqued they seem to stay put. Hope this helps.Red Rocket said:
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