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valleyman
11-16-2003, 01:33 PM
When the speed shop was installing the 4.10 rear end on my '03 300A they pulled the axles to check the bearings. I had told them that with only 9800 miles on the car that this was just going to be wasted effort, but they insisted that they either do it or I go without their two year warranty on the job. Well, there's a reason they're in that business and I'm not.

There were visible imperfections on one of the axles right under the bearing surface on the wheel end. They appear to be scratches, about 3/4'' long, running parallel to the long axis of the axle and completely encircling the axle. They are not clearly visible to casual inspection, but once the axle is cleaned of grease and looked at carefully the scratches are readily apparent. When you run your fingernail across them it's easy to feel them. The axle surface is obviously NOT servicable as a bearing surface.

The bearing itself did not appear damaged nor did the seal. There was no untoward noise coming from the wheel area prior to disassembly. For others whose cars may have been manufactured around the same time as mine, the VIN is 2MEHM75VC43X612095. This is not a positraction rear end.

I took the defective axle to the local LM dealer (not the selling dealership) where I have had some routine service done on the car. After a day or two of dithering they agreed that it was a defect covered by the warranty and are paying for the new axle. The bad news is that my car has been on a rack for two weeks waiting for LM to ship an axle. Apparently they're on "back order." So, be aware.

SergntMac
11-16-2003, 01:49 PM
The rear axle bearing repair TSB (03-05-55) has been out a while, I had mine replaced back in June. The repair kit replaces almost everything in the rear end, except the diff and ring and pinion, unless they are also scored as a result of serious bearing failure, like my MM had. Had you mentioned this earlier, the advice would have been more timely.

May I ask what you mean by "not a posi-traction rear end"?

Not by that name perhaps, but we have a limited slip diferential on par with GMs "posi."

67435animal
11-16-2003, 01:57 PM
Originally posted by SergntMac
May I ask what you mean by "not a posi-traction rear end"?

Not by that name perhaps, but we have a limited slip diferential on par with GMs "posi."

Good question. They are all 'posi'.

Bob

BillyGman
11-16-2003, 02:00 PM
the warning, but two things come to mind:

#1. If the car has ten thousand miles on it already, and it wasn't making any noise, nor are the axle bearings damaged, then I'm not so sure this axle thing was really a problem. But this is merely speculation on my part since I'm simply going by your description and I haven't seen the axle myself.
#2. You said that these cars do NOT have posi-traction? Well who told you that? Ford doesn't call it "Posi-traction" but rather a "Locking" rear end, which is the same thing. "Posi" is a term that General Motors uses for their cars. But both terms are used to describe Limited slip rear ends. If you don't believe that then punch the gas pedal down from a dead stop after you've put a couple hundred miles on it when you get it off the lift, or better yet do a brake torque to smoke the tires a little bit and then go back and look at the strip of rubber. You'll see that your car left two strips(right & Left) not one. Trust me, it's a "Posi" rear although Ford doesn't call it that. Who ever told you that doesn't know what he's talking about.

valleyman
11-16-2003, 02:02 PM
Sorry -- I misspoke. I meant it's not equipped with traction control

SergntMac
11-16-2003, 02:56 PM
Originally posted by valleyman
Sorry -- I misspoke. I meant it's not equipped with traction control
Yeah...Gotcha now.

Traction control was an advertised feature of the base MM, but it wasn't ready when production began in May, '02. The US 300A MM does not have it. The US 300B and CAN 300A has it available now.

mungce
07-24-2004, 12:06 PM
Sarge,
Are you saying that you had your axles replaced even though there wasn't a problem with them? I am quite concerned about a noise that I have had since the day I bought the car, yet it dosn't " seem" to be an axle problem. Can I go to the dealer and demand that they replace the axles under this Ford maintence warning?

EbonyMarauder03
07-24-2004, 12:19 PM
Ford calls their "Positraction" Traction Loc. It's semantics and patent crap. Whatever it's called it's what lets these behemoths move in snowy weather.