The root cause of Tesla oil seal damage - and how to prevent it.

In this episode, I analyze why the inner tesla seal between the gearbox and motor failed, and I replace the seal. Learn and do better :-)
Timestamps
0:00 intro
0:18 loose nut observation
0:42 oil seal inspection and comparison to new
1:04 failure analysis with 3D CAD model
2:02 glue back the nut
2:39 rubber VS teflon (PTFE) seal
3:23 expert seal selection procedure
3:41 dimensional comparison of Ceimin seals
4:19 assembly of new seal
See also
sites.google.com/view/teslald...
www.myrav4ev.com
Disclaimer
This video is for entertainment purposes only. All work you do on your car is at your own risk.
Keywords
Toyota RAV4 2012 2013 2014 Mercedes B-class Electric Drive Tesla Model S large drive unit LDU motor BEV glycol coolant fluid Zerex G48 automatic transmission fluid ATF Dexron VI leak battery aegis ring bearing bearings grinding noise CAD model PTFE teflon rotary lip seal failure drain housing rotor shaft repair common mode grounding runout eccentricity fluting wear axial radial play speed sensor check rebuild assemble disassemble vent reluctor ring expensive cheap repair DIY out of warranty

[@spindlehospital5263]

drill 2 holes in to the nut than treat it m4 and putt a small bronze piece than tighten it with setscrews and also use loctite

[@RENAULTOlivier]

great ! congratulations

[@troubled81]

What is the trick for removing the rotor. Mine really doesn’t want to come out….

[@nicktran8595]

Do you have the link for the rubber seal. They only have PTEF seal now

[@wim4245]

Is the maximum alowed surface speed of the rubber seal enough?

[@diyEVguy]

The answer from the "Ceimin Official Store" chat on AliExpress was: "both is for Tesla". So no number. Same reply from Chenming. Ceimin is a store / brand owned by Chenming. I verified this with Chenming.

[@omarmalyomarmaly9323]

3:01 is it both seals of gear box or on the right side for the rotor seal?

[@diyEVguy]

Both shown seals are options (rubber and teflon) for replacing the broken rubber seal in the video. It seals the "shaft grounding ring chamber" from the "gear box chamber": see here for explanation: czcams.com/video/I_T-djy3TqI/video.html

[@marcbee1234]

Isn't there a torque spec on the nut?

[@diyEVguy]

My nut only has number 1002888-00-A. I did not find a torque spec on the nut.

[@marcbee1234]

@@diyEVguy Maybe that's why the nut loosened because it was not torqued properly at the factory. If it indeed does not have a torque spec would be interesting.

[@alexanderpetrov7027]

Are you doing your own solidworks?

[@diyEVguy]

Onshape.