Person came to me with a tranny problem. It was leaking gear oil. We found This hole in the Differential housing.




After doing a tranny swap (record time...only 6 hours (removal to roll out on new tranny)) we decided to rip the old tranny apart to figure out what went wrong. Knee Jerk Diagnosis...blown Differential. This tranny had more than 200 WHP running through it, so I figured the differental had just given up/out. This outta teach me to make knee jerk diagnosis.

Upon taking the tranny apart. This is the first part to hit the floor.

Notice how the roller bearings are totally chewed up. How the bearing cage is deformed from the load and heat.


Then we get to the main gearshaft. We notice 3 missing teeth on the end main gear. (ouch). The next gear in line (first) is blackened from heat.





[ April 12, 2003, 09:07 PM: Message edited by: Random ]

 

The main gear on the secondary gear shaft is okay, slightly chewed, and is also blacked from heat, but no serious damage.




The differential is actually 100% fine


After straining the remaining gear oil, we were able to save these 2 broken off gear teeth. I'm assuming the third is what punched the hole in the tranny housing in it's speed to exit the tranny.

 

The gear oil looked more like mercury. It was SO filled with metal bits and shavings.








[ April 12, 2003, 09:09 PM: Message edited by: Random ]

 

You can see the gear oil trying to seperate out from the metal particles...and not succeding. The magnets built into the tranny were just totally overloaded/covered in metal. They just couldn't cope with the quanity of metal in the gear oil.




What my garage looked like afterwards.


[ April 12, 2003, 09:09 PM: Message edited by: Random ]

 

holy ****... So he just broke the gears, filling the gear oil with schrapnel?

 

One of the axle seals failed, causing most of the gear oil to leak out. Driver didn't notice for 100-150 miles. Fixed seal, refilled with gear oil, but the damage was done. The blackened gears were weakened by the heat. They were a time bomb waiting to go off.

 

that's some f**ked up sh*t.

 

((note to self.....check axle seals....

 

Maybe part of it was the GL-5 gear oil? Do you think it ate away at some of the brass parts?

 

please go back and reread what was said.


HE LOST ALOMST ALL HIS OIL.

Tranny fluid LUBCIRATES and COOLS the Gearing.

Without this need lubrication. The gears simply over heated and broke.

It has nothign to do with corrosion of the syncros.