Dismantling Gear Shifter Motor - Smart Fortwo 451 Passion 84BHP 2008
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- Опубліковано 1 чер 2024
- Following multiple videos on the 3 lines transmission fault which has affected my Smart Fortwo 451 Passion 84BHP, my secondhand gear shifter motor has arrived. Ahead of fitting this, I remove the end covers and clean out any dust with electrical contact cleaner. I also inspect the carbon brushes. The mating surface is cleaned in preparation for fitting. Full video to follow.
Previously it had:
Full removal of wiring loom from transmission module to clutch actuator & gear motor - continuity tested ok.
Replacement clutch actuator.
Clean poor connection between engine earth strap and engine.
Wrap wiring loom near battery to resolve chaffing of loom against sharp body edges.
Previous fault codes:
N15/6 Sprintshift control module (2 DTCs)
P1800 Implausible transmission data.
P2802 Signals from incremental sensor of component 'M17 (Gear motor)' are implausible.
N47-5 (ESP control unit) (1 DTC)
Fault in CAN communication with control module 'N15/6 (Sprint shift control module)'.
P1801 Transmission adaptation - increment sensor in transmission unit faulty.
Transmission fluid change video:
• 2008 Smart Fortwo 451 ...
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Disclaimer - Please be advised that my videos are not instructional and are merely footage of me, with many years of motor trade experience, carrying out vehicle repairs. Please conduct your own research, ensure you have the correct tools/necessary expertise and undertake your own due diligence before carrying out vehicle repairs. If in doubt, entrust an automotive technician.
Thanks for this new video. Always useful.
Well prepped, good luck!
Will there be an auto-psy on the old one? Thanks for the info👍😊
Thank you! Yes - a full post mortem. I hope I’m not becoming too predictable 🤣
Great stuff 😊
Could use some silicon-grease for the rubberseals ;)
I'm guessing that there are two motors and two gear sets to select two gear clusters ? if I remember correctly there is a three speed gear set that drives a two speed gear set ( giving six forward gears ) - then to the diff.
There are two drums in the transmission, each drum has a cut out that can move either shifter fork, one motor per drum 👍
Inside the brush pack of each motor there are a pair of hall sensors used to calculate how far the motor has turned.
I think that’s the latest revision so after your cleaning it should be safe to say it’s goodun.
Also no need for any sealant, you’re more likely to contaminate the box if you try
in all fairness, anyone whos regularly used sealant /liquid gasket should know not to put so much that it can go where its not wanted.
imho i would be using some here because that surface is plenty big enough, so a small enough bead of sealant would do zero harm, and have all the benefits of using some. when it comes to leaks, prevention is better than cure.
@@ribbitism you’d be doing it wrong, the gear mesh clearances are for a dry joint
@@DavesDiscoveriesChannel You may be right.. But do you believe those meshes are so precisely manufactured that a 0.01-0.02mm deviation in distance would cause issue? I dont. I'd bet there's more variance than that between different housings when they machine the surface flat. And after seeing what I have with regards to much more accurate and specific machined tolerances in my WSB engine experience.. for this I'd still take a super thin layer of sealant every day over a potential leak in this scenario. To each their own really, as long as we try to make highly informed decisions for the best outcome.
@@ribbitism there’s no sealant from the factory and the motors are fixed to the TOP of the gearbox, no chance of leakage
What happened with this motor? Just clean it up and then you could fix the 3 lines problem?
This is the second hand replacement. End covers and carbon dust were removed/cleaned as a precaution. Fitting video to follow!
@@autoknight747 super awesome! Thanks for your reply.