Another Bad Motor-Class Action
- Thread starter snowds
- Start date
Help Support B-Class Electric Drive Forum:
Please give us your source for claiming 75% fail. If you have no data to support, just don't comment.
Good luck finding a shop locally! If it’s not local don’t forget to add the cost to ship the car.
A dealer will only offer the replacement option.
asavage
Active member
Revolt in Arizona, or QCC in San Diego are the ones I know that have expertise with these units and are closest to you, but I do not know if Revolt does the weep hole mod, nor do I know if they plug the vent on the rotor end cap at the same time (which should be done IMO). See the excellent pics in this post.
IDK why you'd need a check valve on the weep hole; most installs I've seen install a hose barb to the hole and a section of clear hose terminating in a crimped end, so you can easily see the blue G48 if any is leaking. It runs to the tube, I'm told. Even if you leave the hose un-crimped, this is no worse than conventional gearbox vents.
Bear in mind that if you have blue coolant that has made it from the reluctor chamber through the outside rotor bearing (or through that vent hole) into the stator cavity, it's mandatory to disassemble the LDU enough to remove the coolant. It will not evaporate -- there is NO airflow, any moisture remains in the stator cavity forever, degrading the stator's isolation resistance And you can't replace the stator (in the US: in the EU, stator rewinding has been done), so once the iso gets too low, that half of the LDU is scrap for practical purposes.
IDK why you'd need a check valve on the weep hole; most installs I've seen install a hose barb to the hole and a section of clear hose terminating in a crimped end, so you can easily see the blue G48 if any is leaking. It runs to the tube, I'm told. Even if you leave the hose un-crimped, this is no worse than conventional gearbox vents.
Bear in mind that if you have blue coolant that has made it from the reluctor chamber through the outside rotor bearing (or through that vent hole) into the stator cavity, it's mandatory to disassemble the LDU enough to remove the coolant. It will not evaporate -- there is NO airflow, any moisture remains in the stator cavity forever, degrading the stator's isolation resistance And you can't replace the stator (in the US: in the EU, stator rewinding has been done), so once the iso gets too low, that half of the LDU is scrap for practical purposes.
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Please quote your source for the 75% failure.
Ronan: There are several videos on YT about the MB B250 and the RAV4 electric motors and repairs (essentially the same system). I contacted one of the presenters and they knew of a repair facility just a few miles from my home. From what I can see on the videos almost any good mechanic should be able to replace these parts, clean the case, etc.
can you get a phone number for me or contact info for me I have tried but no luck,Thanks george
George:
On the video click on the ‘more’ link and then description and you will get the full address, etc. Here is part of it as it will not just cut and paste. QC Charge is a franchise and Alex has the franchise for Portland. If you need another city try the web page.
[email protected]
971.444.5064
regards… nrk
On the video click on the ‘more’ link and then description and you will get the full address, etc. Here is part of it as it will not just cut and paste. QC Charge is a franchise and Alex has the franchise for Portland. If you need another city try the web page.
[email protected]
971.444.5064
regards… nrk
Thank you so much,I will call him tomorrow do you have one of these motors?
Yes, my daily driver is a 2015 B-electric with the Tesla driveline. In nine years and 45K miles it has only had one repair for a battery heating element. In retirement this is perfect for 99% of my needs. To pull my travel trailer I have a 2013 MB ML Bluetec that just turned 100K miles last weekend.
I am going to see Alex soon to have him do the check on the motor/transaxle. This is precautionary as I have no problems and he will do it for free.
