PCeBiker
No-Hands No-Pedaling No-Credentials
- Region
- Canada
Welcome to the club!
Well, being as you've joined the ebike mechanics club, I thought I'd give you some pointers about replacing your tires.
I've got the same rear hub fat motors on both my ebikes and getting the rear wheel off and back on can be a PITA.
As @PedalUma mentioned, the axle flats like to get jammed in the dropouts so you'll need a 10 mm wrench to rotate the axle free.
This is what my dropouts looked like,..
When I got the axle unstuck, it still got caught up on the derailleur while lifting the wheel out.
(yeah, do like @PedalUma says and turn your bike upside-down).
The axle likes to hit the part of the derailleur in the top right of the picture, and it's spring loaded to be the most in the way as possible.
The chain is wrapped around both the sprocket on the wheel and the derailleur, and everything gets caught up.
Getting your derailleur and chain on the smallest sprocket first, helps to get a bit more clearance.
You might want to remove your chain beforehand as well.
It will get it outta the way, and its good practice.
You might need a chain breaker to get the chain off and a quick link to get it back on.
Here's a link to me figuring out how to remove my chain,..
Post in thread 'What's You're Plan For Major Breakdown?' https://forums.electricbikereview.com/threads/whats-youre-plan-for-major-breakdown.51750/post-585264
This would be a good time to give your chain a good cleaning and wax job, if your interested.
The axle will have torque washers on both ends and their orientation needs to be correct.
They can be upside-down or backwards or both,..
Even the washers can be backwards.
The washers on my axles are conical washers.
Actually,..
Looking at this picture, it looks like I've got the damn washer backwards ??!!
Both my ebikes have a derailleur gaurd which further complicates things because it's mounted on the axle and it needs to come off to get the wheel out.
Everything is all jammed up in there, and I had to use the box end of an 18 mm combination wrench to loosen it with about 2° of rotation before you hit stuff.
(I didn't want to use the open end, because it only has two flats that grab the nut)
The black cover needs to come off the axle nut and slid down the motor cable and removed at the connector, then I fed the box end up the cable and on to the axle nut.
(I could delete the derailleur gaurd to make life easier, but I "use" it all the time. I had to replace it cuz it was all bent to s*it.
If you don't have a derailleur gaurd like mine, the best thing to do is leave all the hardware on the axle and just back the nuts off.
You might have enough clearance to get your wheel out without removing anything, which keeps everything in order.
The wheel is kinda heavy, and I had to lift it with one hand while bending the derailleur outta the way with the other.
Getting the wheel back on is even trickier, even with the chain and axle hardware removed.
A third hand is always helpful so maybe you can get your wife to help.
@Jeremy McCreary posted about this stool a while ago. I bought one and I really like it.
I thought with your bad back, it might help.

