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> 901 transmission internal failure
john77
post Feb 17 2016, 10:27 PM
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I was in third, accelerated hard and pop. Pulled the tranny and found a lot of metal debris. I have Dr Evil's rebuild DVD so I'm going to tear it down completely tomorrow and see how extensive the damage is. Looking through the side shift console mount hole at least two of the gears have completely chewed each other's teeth off.

Anyone have any experience of what would cause this? And what other damage I should be looking for? Is there a point of no return where it makes more financial sense to buy another used 901 rather than try to rebuild it?

Just trying to figure out what my options are.
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ConeDodger
post Feb 17 2016, 10:34 PM
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It's extreme... (IMG:style_emoticons/default/blink.gif)

I bet those gear teeth took out some more stuff on the way out! (IMG:style_emoticons/default/sad.gif)
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914_teener
post Feb 18 2016, 12:13 AM
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Doc would know better than me...holy cow...to shear all theeth off the gear?

Main output bearing let go and seized?
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0396
post Feb 18 2016, 01:21 AM
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QUOTE(ConeDodger @ Feb 17 2016, 08:34 PM) *

It's extreme... (IMG:style_emoticons/default/blink.gif)

I bet those gear teeth took out some more stuff on the way out! (IMG:style_emoticons/default/sad.gif)


Agreed, total trash. ..best used as a paper weight. Unless you simply don't have the funds for a good used one..... where do you think the debris went, all to the bottom vs contaminating the rest of the trans. .....simple answer.
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Porschef
post Feb 18 2016, 07:04 AM
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The fluid looks very fresh, any chance it was low?
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Mark Henry
post Feb 18 2016, 07:17 AM
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QUOTE(Porschef @ Feb 18 2016, 08:04 AM) *

The fluid looks very fresh, any chance it was low?

What??? Swepco didn't save ya (IMG:style_emoticons/default/stirthepot.gif)



QUOTE(914_teener @ Feb 18 2016, 01:13 AM) *

Doc would know better than me...holy cow...to shear all theeth off the gear?

Main output bearing let go and seized?


This is my first guess.
I can't make out any rollers, but in that mess... (IMG:style_emoticons/default/unsure.gif)
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john77
post Feb 18 2016, 08:25 AM
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By the sound it made my guess is the chunks went everywhere and then some. The oil wasn't low, I replaced it and all the seals on the tranny about 6 months ago. It still had a slight drip from the speedo drive, but nothing major.

Funds aren't a problem, I'm just trying to figure out what my best option is to get it back on the road.
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76-914
post Feb 18 2016, 08:43 AM
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Seals? Case seals? Did you get your pinion depth set correctly?
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914_teener
post Feb 18 2016, 09:06 AM
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QUOTE(76-914 @ Feb 18 2016, 06:43 AM) *

Seals? Case seals? Did you get your pinion depth set correctly?




Oh...oh........

(IMG:style_emoticons/default/ar15.gif)
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john77
post Feb 18 2016, 09:59 AM
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QUOTE(76-914 @ Feb 18 2016, 06:43 AM) *

Seals? Case seals? Did you get your pinion depth set correctly?


I misspoke, not all the seals, just the easy to get to ones - speedo drive, side shifter console, diff output flange seals.
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r_towle
post Feb 18 2016, 10:51 AM
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looks like the bearing, or bearing housing got out of round.

Best way to go, get another core and rebuild from there.
You have a hosed case.

Yes, it could be fixed, but I dont see the point given we can still find cores.

rich
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0396
post Feb 18 2016, 10:57 AM
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QUOTE(396 @ Feb 17 2016, 11:21 PM) *

QUOTE(ConeDodger @ Feb 17 2016, 08:34 PM) *

It's extreme... (IMG:style_emoticons/default/blink.gif)

I bet those gear teeth took out some more stuff on the way out! (IMG:style_emoticons/default/sad.gif)


Agreed, total trash. ..best used as a paper weight. Unless you simply don't have the funds for a good used one..... where do you think the debris went, all to the bottom vs contaminating the rest of the trans. .....simple answer.


Are you sure your not running a big block with 500 hp in that baby. (IMG:style_emoticons/default/biggrin.gif)
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tomeric914
post Feb 18 2016, 11:32 AM
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You mean like this?

http://www.914world.com/bbs2/index.php?sho...=257597&hl=
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