Broken seal in Tesla gearbox discovered after 42k miles: Was this to be expected?
Vložit
- čas přidán 1. 07. 2024
- In this episode, I take apart the Tesla Large Drive Unit gearbox.
Timestamps
0:00 intro
0:10 remove inverter cover
0:41 result: no coolant in inverter
0:46 separate gear box casts
0:56 sensor wires removal
2:30 put back inverter cover for protection
2:57 remove gearbox bolts + cover for AC conductors
4:10 unbolt conductors
4:15 remove coolant pipe
4:46 remove parking brake servo
5:07 pry open gearbox
5:50 pay attention for sensor cable
6:10 parking pawl workings explanation (Toyota / Mercedes only)
7:46 note on wire space
7:53 found seal debris
8:03 remove differential
8:36 remove primary and secondary shafts
11:51 oil seal inspection
12:15 remove grease from rotor spline
12:38 oil seal damage inspection
13:55 rotor play inspection (axial and radial)
14:04 spline teeth wear inspection
14:37 oil pump inspection
15:06 gear box breather inspection
15:33 inverter air breather inspection
Toyota Garage manual subscription and download
techinfo.toyota.com
See also
sites.google.com/view/teslald...
en.wikipedia.org/wiki/Toyota_...
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 - Auta a dopravní prostředky
thanks dutchie, goede info
Just superb instructions video!
Thanks!
The parking brake seen here is also used in mercedes with tesla large drive unit
Correct
@@diyEVguy What do you think about the coolant delete option?
@@rienkvandenberg9103 Thoughts: which exact conditions would cause the rotor to overheat and damage when deleting it's cooling? If it only means that you can't abuse the car on a race circuit but all other everyday use is fine, then the deletion is preferred over seal replacement.
@@diyEVguy Someone told me that this motor is only rated for 30kw constant. But peak power is almost 300kw. I think cooling is very important even for daily use if you like to accelerate fast.
parking mechanism is used on rav4ev and b250e, yes, model s/x does not have it.
Cost reduction.
Thank you for the great video. I appreciate that you included the torque specs.
Did you happen to find any part numbers for seals and bearings, as well as places to buy them? My biggest concern is finding the seal at the end of the coolant tube that that runs down the rotor.
Thanks!
I bought Chenming seals through aliexpress. I want to discuss those in a next episode. Bearing: not sure if I need to replace them. I will share the model numbers though.
impressive
Thanks!
Your videos have been extremely helpful. I’m though currently trying to remove the small pinion gear next to the middle gear though cannot since I cannot take off the 3 bolts on the middle gear. The rotor has seized in places because of coolant and will not allow me rotate the rotor to get to the bolts middle gear. Any idea what to do in this situation?
Thank you! Sorry I do not have a good answer. Maybe ask on teslamotorsclub.com?
QC Charge in Cali has a coolant delete kit that prevents inverter death! I think they have a bearings and seal kit too but not sure.
Who developed it? Tony or Tesla?
I see you have a acent. I used to be a mechanic might go back ..part time. I did everything long time ago!
Yes a Dutch accent.
12:17 mb the grease is the same which u already repacked in the bearing skf
Are you saying that the bearing grease can be used for the spline too?
@@diyEVguy yeap :)
hello! how many sealings we have in ldu?
4 (excluding all rubber O-rings)
Why there is no o-ring 8:20? But in the other video it is in complectation?
The ring sticks to the bearing by the oil.
Where are you guys located. I’m looking for someone in south Florida who can do this kind of work
I am in California. Try "Electrified Garage" instead.
@@diyEVguy thanks. I will look for them
I se SKF bearings made in USA inside the gearbox
Yes, see also more info and discussion about the "Country of Origin" here: sites.google.com/view/teslaldu/parts
What symptom was seen before the unit was pulled?
Coolant on the speed sensor. See also my very first video.
Actually for this seal no symptoms at all, I just stumbled over it.
@@diyEVguy Thanks, I subbed and will check the other vids. I wonder if that bad seal would have no symptoms or cause no problems.
@@ohger1 When it fails, the red Dexron VI fluid would gradually flow into the rotor chamber and next also into the inverter. It is non-conductive, so it should not short out electrinics, I guess. This continues until the gearbox runs dry and then your bearings may die.
@@diyEVguy Thanks for the info.
I got to hand to the Tesla engineering and RD department, this is a well-built piece of equipment. No wonder the Tesla automobile is so popular, excellent engineering.
What aspect do you admire most?
@@diyEVguy The care and precision and patients you need to work on these units. One thing I got out of this is that this is not a DIY project. If you have a problem with your electric car please take it to a professional technician.
@@TOONMAN200 Yeah in general, for most people, that is the best advise.