48 2.0 ET48 Maintenance & Random Question

[RusTy1804]

Trying the maintenance on the ET48 2.0. This is the first time I've attempted to disassemble and clean this machine.
It looks like the oil number for the differential and shocks are still the original ones, so I’d like to take this opportunity to change them.

Going forward, plan to deliberately use the Arrma BLX 185 ESC, which is no longer in production. I'm waiting to see how things go. because Spektrum products can't be exported outside the U.S. (Maybe it's time to use my eBay account, which I've neglected for so long? )
Shock standoffs do bend some times. I really need to buy some spares.

I tried to remove the bearing from the front axle (TKR8070). However, the 15x21x4 bearing (TKRBB15214) was seized to the axle and wouldn't come off easily.
I think it was probably due to rust. In the end, I filed it down and took my time removing it, but I had to sacrifice the axle with one bearing.
Would it have come off easily if I’d used a torch? Also, are there any preventive measures or solutions?

If translation is bad, sorry.

Thank you.

 

[davidg]

I usually open my vise enough that the bearing will just sit on top of it, without falling through. Then tap the stuck axle out, hope that helps.

 

[RusTy1804]

I see. Thanks! In that case, it looks like I'll need a rubber hammer. pretty sure there was a spare one in the garage.

 

[RustyUs]

I think sometimes, in my cases, fine dust gets in there and acts like cement. Other times it's a bearing that is done for and running dry... heat has built up and has now made it harder to get off. I'll put a drop of PB Blaster, or oil, and let it sit for a minute. Tapping on the bearing, with a screwdriver's tip, I'll try walking the bearing down off the stub axle. This usually works the bearing loose. If that does not work, drastic measures, like davidg mentioned, will be next step.

 

[RusTy1804]

I see. So, as expected, it does have an impact in places with a lot of very fine sand or dust.
The method seems pretty simple. I'll look for a products from the KURE series later.
The key is to take my time. got it!
I'll keep this last method in mind as a last resort.

thx!