BlackWorksInc

If I am looking at the pictures properly, then the input shaft gear (or 1st gear if you will?) has "melted" or ground itself to ****. In any case, I have a hard time beliving that towing caused that issue...

I think what happened is that you somehow chipped the gear and it just ground itself up, that seems far more plausible than towing with it in gear, since the engine would also have to turn if the tranny was engaged.

takhay

Hmm... are you sure? I didn't notice any grinding or any noises before it went, and if they ground them selves to pieces, wouldn't there be bits and pieces inside the transmission? I honestly thought i ground em down when it happened... But when we took it apart, there wasn't anything in there, and if you look at the gear that still has some teeth on it, it looks like it melted since the teeth are spread out and not missing/broken off... Even my mechanic told me i melted 'em, and he's been working on 7's for probably over 20 years... he was just as surprised to see it as I was...

And yeah, stock GSL-SE HP...

Yeah, DemonSpawn, I agree with you there... especially since there was no towing involved...

The thing is, i still wonder if i broke a tooth/chipped any gears at, since if I did that, wouldn't there be a piece of gear floating around inside the transmission housing?

trochoid

iTrader: (6)

Towing with the wheels on the ground started and caused most of the damage. Towing with the wheels on the ground, tranny in neutral spins the output shaft, but not the input. Spinning the input shaft is what lubes the tranny.

takhay

Okay, I hate to sound stubborn, but I'm telling you people, the towing COULDN'T have been the cause, especially since the last time she was towed with her wheels down was in late 2005 (went and looked at my records), three years, 20K miles, and two complete inspections ago, which included opening up the tranny and checking out the internals! If towing had caused the problems, wouldn't we have seen worn gears with ground or missing teeth? Because that HAS happened before and we had to get a couple of the internals re-machined... And if it was the towing, WHY COULDN'T THIS HAVE HAPPENED EARLIER?!?!

Seriously, my tranny probably picked the worst possible time to do this to me...

BTW, thanks for all your imput people, you guys are thinking along the same lines as me, but are there any other possible reasons this could have happened besides low oil and improper towing? Rotary gods, I seek your knowledge...

zeroecco

the basic metals used in transmissions of the 70s' and early 80s' are prone to heat more then modern metals because of the production process and inconsistencies in carbon content etc. it's likely one of those gears has more carbon content then the others and created excess friction on the other parts causing the eventual breakdown of the gear into what it is now. Thirty ears of heat can do that pretty easily. besides these cars are really old and we are going to see a majority of issues that no one else has ever seen because of the stress these cars have been through.

REVHED

If it's in neutral the output shaft is spinning but the gears aren't. How would this damage the gears?

blwfly

iTrader: (4)

i agree with this dude.

chepx7

iTrader: (2)

No comment but... Atleast I can use the pics for my transmission class on monday. Sorry dude. Let us know if you find out what really caused it