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NEED ADVICE - 4T65E HD Diff Gears Breaking Apart

JimSWylie

New member
4T65E HD Diff Gears Breaking Apart

First of all
About 3 months back, along story short, i converted the trans from non HD to HD.
About two weeks ago my trans started to delay shift while transitioning to shift up to next gears on a few occasions, to the point of getting past the rev limiter i believe at around 6700 rpm, and if i went to WOT, it was slipping.
About 1 week ago it started getting more frequently very fast then would not engage any gear at all 1-2-3-4 and reverse, unless i turned the car off and turned it back on and still only lasted for about 10 seconds.
So i tore it down and found what appeared to be small pieces of gears in the bottom of the pan, but no sparkles or metal flakes in the oil. I completely tore down all the clutch assembly's and no leopard spotting, no burnt clutches, no bad bearings, and chain and gear-set all looked good.
Then took out the diff assembly and there it was! Final drive ring, sun, and the 4 smaller gears that mesh with the sun gear were all chipped up. So i imagine the tcc solenoid is plugged with debris.
I kinda feel stupid asking this, but did i forget something when i did my swap?
 
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I did not now that u have install them one way. By looking at them it appeared to be no difference.
So now im going to rebuild the diff. Im in the process of looking for info on doing this.
Also my torque converter was wasted also.
 
So have not had any luck finding any info for rebuilding or setting up the gears for the diff yet.
Does anyone have any illustrations or specs for the diff?
 
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