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Impressive breaks/failures

[486] said:
nah not yet
might in the future though, got some thoughts rattling around for something to do to one of my vehicles...
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GM 4t65 in your insight and the axod are the same no? A joint venture between GM & Ford?


It looks kind of small but I've only seen one failure and that was somebody doing the one wheel peel in snow and I think the cross pin walked out busted the end of the trans case off.
 
Thatg9659 said:
GM 4t65 in your insight and the axod are the same no? A joint venture between GM & Ford?


It looks kind of small but I've only seen one failure and that was somebody doing the one wheel peel in snow and I think the cross pin walked out busted the end of the trans case off.
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they're close in layout, but not the same

IIRC the ford one you gotta tear down the whole trans to get to the diff where the 4t65 has the diff right under a cap on the right side
 
Mercuiser vs rock?
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The screw on our biggest extrusion coater at work, a 5" diameter barrel on a 300HP drive (and a lot of gear reduction), just welded itself to the barrel the other day. it left gouges so deep that my entire finger can fit in them and still be below the surface of the I.D. of the barrel. It looks like someone took an oxy/acetylene torch and just started blasting random spots.

I'll see if I can get some pics tomorrow.
 
SLOWPOKE693 said:
I'm surprised they don't use a shear pin/bolt on the prop shaft somewhere to prevent shit like that from happening. Boaters being boaters and all... :flipoff2:
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For small stuff they sell fancy breakaway props.

If it were up to me the prop would be on a self locking taper fit (some inboards are, typically outboards and stern drives are splined) and there would be a crush sleeve and a lock washer between that and the nut so that it backs off and spins on the shaft when you hit shit and then the lock washer spring holds it on well enough to make it to port at reduced power.
 
It had a "fuse" in the prop hub. That didn't really work. I'm not sure exactly what I hit since it didn't ding the prop up and I was in water that was about 10 ft deep. Alpha drives are not real strong and even after this happened it still worked fine, just made more noise. I ran it for a couple hours after that before I could get it out and check it. :eek:
 
[486] said:
did you weld the side gears to the pinions, or did you do the deal where guys just weld up a couple teeth to keep it disassembleable and hope the wedging forces don't snap the diff case?

I've always figured on welding everything together real good, then weld the ring gear side side gear to the diff case, so the power ain't even gotta go through the cross pin
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The spiders were all welded together and I had cracked the welds years ago so I threw more weld at it and then welded the spiders to the carrier. It made it several more years like that.
I could still remove the cross pin for disassembly.
 
SLOWPOKE693 said:
I'm surprised they don't use a shear pin/bolt on the prop shaft somewhere to prevent shit like that from happening. Boaters being boaters and all... :flipoff2:
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Nah bro...
It's gotta rubber hub in da prop:homer:
That and no way for the outdrive to lift over said rock:flipoff2:
 
Ummduh said:
The screw on our biggest extrusion coater at work, a 5" diameter barrel on a 300HP drive (and a lot of gear reduction), just welded itself to the barrel the other day. it left gouges so deep that my entire finger can fit in them and still be below the surface of the I.D. of the barrel. It looks like someone took an oxy/acetylene torch and just started blasting random spots.

I'll see if I can get some pics tomorrow.
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The feed throat with the big damage was already sent out. Here is the screw and barrel. We had 150T on it and couldn't get the screw to budge. It's being sent out, they're having it examind for root cause, we don't want this to happen again. It happened to a lesser extent a few years ago as well.

No banana for scale, no food out there
 

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1981K20 said:
Widetrac differential out of our winch truck. Pulling 189,000lbs up an off highway hill with 2 sets of tire chains on and she slipped then bit hard. $11,000 total repair cost, needed the entire housing replaced.

Oops :laughing:
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big bada boom!
 
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