Malleus
Far west of Siegen
that's a true fail
Grinds going into park (1 Viewer)
- Thread starter family80
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- Thread starter
- #22
Does anyone know if the out put shaft just pulls out when you take that extension housing off of trans?
Malleus
Far west of Siegen
I need to slow down. Trying to do too many things at once.
The intermediate shaft is the only separate shaft. The input and output shafts are assemblies. In the case of the output shaft, the parking brake flange is welded onto the shaft. Unlike the A343F, the shaft assembly has to come out of the front of the case.
The intermediate shaft is the only separate shaft. The input and output shafts are assemblies. In the case of the output shaft, the parking brake flange is welded onto the shaft. Unlike the A343F, the shaft assembly has to come out of the front of the case.
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Malleus
Far west of Siegen
Sorry for the delay; it took a minute to find. My A442F manual isn't as organized as my A343F manual is.
Malleus
Far west of Siegen
I suggest you send Dave Stedman an email and see if he can help. These are "discontinued" in the US market, but that doesn't mean much. They're very popular elsewhere. Ask him if he can find 35073-60040, or its replacement, in another vehicle, that was built for the US market. Then you can look for that part used. Failing that, he may be abel to get one, or its replacement part number, new. His prices are unbelievably good.
If you can't find just the shaft, you may be able to find a used A442F, but you'll need to have it rebuilt, unless you're a pro gambler. FWIW, the US stock lists new A442F, not rebuilt, for just over $5k.
If you can't find just the shaft, you may be able to find a used A442F, but you'll need to have it rebuilt, unless you're a pro gambler. FWIW, the US stock lists new A442F, not rebuilt, for just over $5k.
- Thread starter
- #26
Is Dave stedman a parts guy?
Malleus
Far west of Siegen
Dave owns Japan 4x4 in Japan. He's the parts guy.
- Thread starter
- #28
Thank you
I'm pretty sure you can find someone with a transmission that's dead for other reasons and get that shaft.
I'm going to watch this and hope someone has an explanation for breaking the shaft because that seems insane. Last sort of failure I'd expect on one of these.
I'm going to watch this and hope someone has an explanation for breaking the shaft because that seems insane. Last sort of failure I'd expect on one of these.
Malleus
Far west of Siegen
FWIW, I'm going to pick up a A442F this weekend. I'll ask if there's a dead soldier lying around and let you you.
Malleus
Far west of Siegen
Agreed. I'd think it was the rear end.
There is definitely a need for further inspection, before the transmission is fixed. It didn't eat itself.
- Thread starter
- #32
Yea I have never seen a shaft break like that without extreme conditions but here I am
Malleus
Far west of Siegen
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I don't understand how there was no bang or crazy noise when this happened. Is the bearing the shaft broke near still spinning? And the one on the other end? I assume there's one on the other end...
If it didn't roll fine, I would wonder if the rear end locked up and snapped the shaft, somehow.
Maybe it's worth poking under the differential covers just to be sure things are okay.
There wasn't a ton of metal in the transmission pan. I don't immediately think the whole thing is toast based on that. But it is really suspect how it went out in the first place. It seems like something had to get into a failure condition to snap that shaft.
Have you torn down the transmission anymore to see if there's any clues?
If it didn't roll fine, I would wonder if the rear end locked up and snapped the shaft, somehow.
Maybe it's worth poking under the differential covers just to be sure things are okay.
There wasn't a ton of metal in the transmission pan. I don't immediately think the whole thing is toast based on that. But it is really suspect how it went out in the first place. It seems like something had to get into a failure condition to snap that shaft.
Have you torn down the transmission anymore to see if there's any clues?
Malleus
Far west of Siegen
That was my thought process initially, but the break is across the diameter and not at angle, which would have been consistent with a torsion fracture, unless there was already a defect (inclusion or microfracture) in the shaft at that point. I'm not sure that shaft is hardened (and even if it was, it was case hardened only), so if it wasn't, that wasn't a torsion break, which it would have been if the rear end was to blame.
The existence of a defect also would have explained the lack of a loud bang when it split. It would have popped for sure, but maybe not loud enough to be heard over road noise. And a radio...or wahtever else was going on at the time.
It's academic at this point, but unless @family80 knows someone in a metrology lab, it's going to have to remain a mystery.
The existence of a defect also would have explained the lack of a loud bang when it split. It would have popped for sure, but maybe not loud enough to be heard over road noise. And a radio...or wahtever else was going on at the time.
It's academic at this point, but unless @family80 knows someone in a metrology lab, it's going to have to remain a mystery.
- Thread starter
- #36
It may remain a mystery. This is the piece that I pulled out of the transfer case
- Thread starter
- #37
If you can see in the side view it looks like there is a groove like for a snap ring right where it sheared.
Malleus
Far west of Siegen
That little round spot in the face is the inception point of the failure. That shaft was a time bomb.
- Thread starter
- #39
That’s what it looks like to me. As far as I know it’s the original trans so factory defect that lasted 195k.
