Kraton EXB REAR DIFFERENTIAL PROBLEM!!

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The bottom inside the diff. case isn't flat but curved. And because of this, the first large shim to put on the o-ring has been bent all arround, not a major issue. His diff. came with the wrong number of shims too. And as his diff. gear teeth have been wear out he have put epoxy inside to almost lock it. That's almost all he show in his 1hour video.
 
I received mine today. I just quickly checked the rear diff.. Only two shims on both side under the sun gears. One large, one thin, so not enough. Fortunately i bought the limited slip plates weeks ago.

And also, not that much oil inside the diff..
 
Surchaufeur said:
He found up the bottom of his diff cup is not flush
Click to expand...

Why did he says there is 20 million fluid in the REAR diff? That's not what it comes with. Why would he put 1 million fluid in the rear? That's kinda nuts. The center diff maybe, but the rear?

EDIT: Oh - he added 20 million to try to keep it alive I guess?
 
Surchaufeur said:
He found up the bottom of his diff cup is not flush
Click to expand...

Completely new to this. I running stock specs and ran the exb maybe 3 times. I took apart the rear diff after I topped up the fluid from before and both sun gears were chipped and I don't know if this is relevant to the above but I noticed all three shims on each side were con-caving. I have a feeling the problem is not with the shims but maybe the diff cup not being flush .so after a couple of runs the gears start to loose their tight mesh.
 
insomnia77 said:
Completely new to this. I running stock specs and ran the exb maybe 3 times. I took apart the rear diff after I topped up the fluid from before and both sun gears were chipped and I don't know if this is relevant to the above but I noticed all three shims on each side were con-caving. I have a feeling the problem is not with the shims but maybe the diff cup not being flush .
Click to expand...
Others have said the shims aren’t wide enough to support the sun gears.
 
bicketybam said:
Same here and I run more power than stock. I can't even remember the last time I broke a diff. Seriously it's been well over a year. But of course people will blow donuts for a full battery, land under full throttle, self right because they don't want to walk 10 feet, and do standing backflips all day long. You can fix a diff but you can't fix stupid.
Click to expand...
Bro this speaks to me , thanks bro hahahah
 
Here is a new exploded diagram I have been sent by Logic RC along with some shims to go behind the sun gear labelled “service pack shims”
59995391-D4DA-4BB3-BE81-02667B464526.png
 
deetee said:
Here is a new exploded diagram I have been sent by Logic RC along with some shims to go behind the sun gear labelled “service pack shims” View attachment 111086
Click to expand...

interesting - is this something they cobbled together or an official Arrma release? If it’s the latter, I’m surprised they would have two solutions after sourcing a 1.9mm thick shim.
 
Engineer said:
interesting - is this something they cobbled together or an official Arrma release? If it’s the latter, I’m surprised they would have two solutions after sourcing a 1.9mm thick shim.
Click to expand...
This is something that Logic RC put together to get their customers back on the road again! I am very greatfull to them as I could be waiting a long time before arrma make the new shim widely available. So far it seems to be holding up fine. The last diff only saw 3 packs before it failed
 
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