1st gen tundra A340F tranny issue - pics

[dyogim]

The A340F is an auto tranny found on several toyota vehicles. I have a 2000 tundra V8. At around 76K miles back in mid-2004, the tranny shifted hard after a wheelin' trip. The shifts occurred on the hwy and on my street on my way home. I pulled the pan and found this:

Ended up finding a used tranny with 15K miles and had it shipped to me. Removed the bad tranny and installed the used one. Figured I tear open the bad one to see what happened and this what I found. Noticed on the ring gear, the cage of the needle bearings. I believe that failed causing the bearings to lodge themselves between the ring gear and the od planetary gears and then the implosions started...

 

[Cackalak Han]

Thanks for this post. I believe my Tacoma uses this same transmission and I've got 120k on it. Hopefully, mine lasts a bit longer.

Did you rebuild that transmission?

 

[dyogim]

Did you rebuild that transmission?

I was going to but, the time and cost was not worth it. For someone who has never rebuilt a tranny, it would've been best to have one built by John at IPT Trans.

 

[98dango]

thay last a good long time but you need to service them. outher wise run it and yes thay can be spendy to fix.