Replacing Castor Bearings – the hacky way (Wheelchair Mech Shop: Repairs)
Replacing Castor Bearings – the hacky way (Wheelchair Mech Shop: Repairs)


Welcome to Wheelchair Mech Shop:
Replacing your bearing the hacky way. You may remember a few days ago I
said that the bearing in my castors are completely trashed. Still true, I
didn’t get round to replacing them yet. So I’m going to show you how to replace
the bearings. It’s the hacky way because to do it non-hacky way would invlove
owning about one hundred pounds worth of tools I don’t own. So we’re
going to make do with what I’ve got which is reletively stand stuff you’d
probably have around the house. With the exception of a skate bearing
puller that I probably won’t be able to use. So lets get into this. First job
is to get the bearing off the wheelchair. Quick example of bearings:
That’ss a okay-ish one That’s a trashed one
and later I’ll show you a good one. Okay, so, castor forks have two bolts,
one either side, so you’ll need two spanners. One simply goes in the back
and is just used to stop this end from spinning. The other goes in this side
and, when I put it in the right gear, is used to loosen everything off. spin
it until you can do it with your fingers, and then do the last little bit with
your fingers. This will drop a lot of bits so be careful. Oh. Okay it’s
tight enough wedged that it’s not dropping bits. So what you get is a
wheel, two spacers, and the axel bolt. Put everything to one side for now
and get the other one off. Right, can put the wheelchair frame
out of the way for now. Got to move onto the floor for this as
it’s probably going to invlove quite a bit of hammering. So I need a good
stout worktop, you can do this stright onto the floor if you’ve got a nice solid
floor, but if you’ve got something to work on it hurts you back less.
Get everything out the way, and the two bits I dropped.
If you’re strong you can probably, possibly use a skate bearing puller.
The problem is these are designed for metal bearings into a plastic
housing, so you have to be really strong to do it. The wheelchair wheels
are a metal bearing in a metal housing. Which makes it much tougher to pull
the bearing out, I will attempt to do this. With EDS I’m nowhere near strong
enough to pull this out of this with manual force alone. So. While a
skate bearing puller is nice it’s not that useful to me. This is where the
ugly hack comes in. The ugly hack is a bolt and a hammer. Do not use
this method if you want to keep these bearings intact, this will destory these
bearings. All you do is put this (bolt) through until it touches the bearing
underneath, and tap, and it falls out. Turn it over, put it on the bearing
underneath again, and tap it out. Those bearings are scrap so I don’t
care about destroying them. Same again, for the other wheel.
That’s the bearings out of the wheels. We do need some bits that fell out
and into the top of my tool box. Inbetween the bearings you might find
a couple more spacers. These are the scrap bearings. That one doesn’t spin
too badly, that one doesn’t spin at all. Those are all scrap they’re going away.
I have a pack of new bearings, these where bought from my local skate shop,
fourty two, it’s my local independant place, You can buy dedicated wheelchair
bearings they cost more money they’re exactly the same, I would recomend
your local skate place. They just come in a little box, I’ve already used half of
these in a previous build. Rebuilding all this, you got you wheel
you’ve got your bearing. Some bearings have a right side and a wrong side,
some don’t. The red bearings don’t have a right or wrong side, they’re the
same both sides. The new black bearings do have a right side, and a wrong side,
typically you’ll, it’ll be easy to tell which side is which. So putting them back into
the wheels. It’s pretty simple, of just put them in and give them a good push,
they should fit most of the way in without any mechanical aid. The last little bit I
do with a rubber mallet, I’m not using the metal because that will damage
the bearings, the rubber hammer wont’ really damage it. So it’s
literly just. [hammering] So yeah, that’s in, filp your wheel over
put your spacer in, get your second bearing and that goes in on the other
side, same thing. [sped up hammering] Tap in place and that’s you wheel with it’s
bearings. Just do that twice, both wheels. Make sure the spacer is in like that not
on it’s side because you can’t twist them once they’re in, just make sure they’re
like that, and then other bearing in, and that one didn’t even require the
rubber mallet, that just went in and is fine. Time to put these back on the
wheelchair. So putting everything back together,
it’s pretty much the reverse of how we took it all off. You need your
wheel, you need you axel and you need the spacers. It best to do this
with the long bit of the axel not the short bit. So long bit goes through.
spacer goes on, wheel goes on, this bit’s always slightly fiddly, then
once that’s most of the way through other spacer goes in, push that all
the way through, and then last bit of the axel pin goes in. Do it up
with your fingers as much as you can, and then tighten the rest of
it off. Try not to over tighten the because it can make the wheels
trickey to spin. And again, axel pin, spacer, wheel,
fiddly threading through the wheels because of the internial spacer, other
spacer, and the other end of the axel pin and tight. and as a final demonstration this is what
a good spinning wheel looks like. So there you go the hacky way to replace
the bearings in your wheelchair castors. PLUR peeps

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