Motor connector

gazza19

Pedelecer
Aug 22, 2020
218
6
Hi what’s the easiest way to disconnect this connector without breaking it or the wire it’s stuck and hard to separate any help would be appreciated
 

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matthewslack

Esteemed Pedelecer
Nov 26, 2021
1,854
1,341
The metal bit is probably a retaining nut, so it will probably unscrew, and then it will pull apart as normal.
 
  • Agree
Reactions: danielrlee

guerney

Esteemed Pedelecer
Sep 7, 2021
11,386
3,234
Looks like a multi-pin audio connector with the knurled nut/collar held captive by one end, and threaded on the other. Seems crazy to use one (if an audio connector has been repurposed) on a bike if the steel used isn't stainless. I'd turn the nut both ways by hand till it moves in one direction or other. WD40 would be a bad idea judging by a report of it being electrically conductive on this forum, some time ago - some dude squirted battery pins with WD40 as I recall, and there was a short.
 
Last edited:

guerney

Esteemed Pedelecer
Sep 7, 2021
11,386
3,234
If your bike working ok? Why do you want to disconnect? I'm sure someone will turn up with a better idea: A heat/cool cycle could break up the rust: alternate hair dryer and a bag of frozen peas, try separating every time (pushing, as well as trying to pull apart). If that didn't work... swiching off and removing the battery first, I'd apply a drop or two of 99.99% isopropyl alcohol, dissolves rust. Bear in mind it also damages rubber. The collar should loosen after a time and with movement, but if it doesn't, I'd heat up the connector with a hairdryer and try again, then cool and try again. If it still refused to separate, I'd make sure to dry off the remaining 0.01% electrically conductive water before using the ebike.

https://www.ebay.co.uk/sch/i.html?kw=99.99%25+isopropyl+alcohol&toolid=20004&LH_BIN=1&_sop=15
 

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