REAR END AGAIN

[03_Turbo7.3]

OK so this noise has be haunting me forever, i found it!! it was the rear end and fixed it back on july 28th/08, and its now Dec 9th /08 and ive put about 6000km on since i fixed it and the front pinion bearing is POOCHED the noise came back so i ripped it apart again and yup feels like rumble strips in the bearing, IS THERE A BEARING OUT THERE I WONT DESTROY, i dont get it, we did everything right, im lost, any suggestions?

[03_Turbo7.3]

BUMP anyone....at all lol

[TANK'S 250]

Edit:;;;;;;;

[NCHornet]

Differentials can be real tricky, are you sure you set all the clearences correctly? What kind of bearings did you use? I prefer Timken myself and all I use. You need to tear it down to see what failed.

NCH

[03_Turbo7.3]

i used all OEM timken bearings, i used the original spacers everything lined up perfectly it went together awsome, it was good for the first like 3.5 months and now its super loud again, when i took off the rear drive shaft the other day and moved the pinion bearings by hand you can feel the first one failed, it feels like rumble strips, its fooked... i had a ford tech help me put it back together too

[TANK'S 250]

Was the Ford Tech trained in gears,..or engines?

[03_Turbo7.3]

haha no offense but DUH, im not going to let just some guy work on my truck, hes our #1 used car guy at work right now, he can fix just about anything and used to work for ford and rebuilt rear ends all the time, he says it may have to do with the chip but i have no idea, says hes never seen one go so quick

[willypscustoms]

gears are tricky i know a guy who has been doing gears for 10 years and i wont let him near my rear end with a 10 foot pool, just because he knows how to do a gear set up does not mean he can do one. i guaranty that if it failed again after only 4 mo he did not set it up right when he replaced the last bearing or there was something still wrong in your rear end that he missed. i have seen tons of bearings go out and gear sets destroyed because they were not properly installed by someone who can actually do a proper gear set up.

[03_Turbo7.3]

if it wasnt so damn expensive id take it to ford to get it built so there was warranty, its about 150$ for me to redo the bearings and its like 1000$ plus for ford to to do, so id rather take the time and attempt to do it again myself anybody have a write up on rebuilding one???

[willypscustoms]

Originally Posted by 03_Turbo7.3

if it wasnt so damn expensive id take it to ford to get it built so there was warranty, its about 150$ for me to redo the bearings and its like 1000$ plus for ford to to do, so id rather take the time and attempt to do it again myself anybody have a write up on rebuilding one???

yeah there is one at

edit
wrong link let me try to find the write up in my endless mass of bookmarks