Ingo Posted December 29, 2019 Posted December 29, 2019 Hi To whom it may concern. My one month old 4x4 extreme 42099 lost power at the rear wheels. I then took it apart to see if something might be stuck in the gears etc. No, everything mechanical including hubs were fine. Ran the rear powered up XL motor outside the truck and found that it made a grinding noise vibrating excessively and started to sieze when rotating anti-clockwise (truck moves forward) , but reverse works fine. What to do? Is there such an replacement motor available? Think the motor overheated because of resistance when not being able to make a climb etc. overload. Or just a bad motor? Why does the motor vibrate excessively and struggle to rotate ONLY anti-clockwise? Have anyone had this issue? Please advice. Quote
BusterHaus Posted December 29, 2019 Posted December 29, 2019 I would suggest contacting Lego customer support. Explain your test and issues, don't mention that you took it apart, and see what they offer as a solution. There's a good chance they'll send you a replacement motor. Quote
Ingo Posted December 29, 2019 Author Posted December 29, 2019 Mailed Lego South Africa today so will see what happens. Thanks Quote
9v system Posted December 29, 2019 Posted December 29, 2019 looks like it has the same internal motor as the pf xl, if this is so then one of the hair thin brushes will be bent inside the motor itself Quote
Woodstock pl Posted November 23, 2020 Posted November 23, 2020 This happened to my pf xl. Very annoying, got replacements though Quote
jaxeman09 Posted September 21, 2022 Posted September 21, 2022 On 12/30/2019 at 2:31 AM, Ingo said: Hi To whom it may concern. My one month old 4x4 extreme 42099 lost power at the rear wheels. I then took it apart to see if something might be stuck in the gears etc. No, everything mechanical including hubs were fine. Ran the rear powered up XL motor outside the truck and found that it made a grinding noise vibrating excessively and started to sieze when rotating anti-clockwise (truck moves forward) , but reverse works fine. What to do? Is there such an replacement motor available? Think the motor overheated because of resistance when not being able to make a climb etc. overload. Or just a bad motor? Why does the motor vibrate excessively and struggle to rotate ONLY anti-clockwise? Have anyone had this issue? Please advice. Hey I have the same issue with the same set but both of my motors died, I contacted lego about and they sent 2 free without me needing to send them Quote
Zerobricks Posted September 22, 2022 Posted September 22, 2022 From my experience the PU XL motors are hughly prone to dying. It seems the electric motors no longer use carbon brushes and are therefore more sensitive to overload. Quote
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