The wheels are coming off

[AndrewP]

I've found the tight spot in my Rob Roy ;D
Unfortunately it's the quartering

So the wheels are coming off, I suspect loctited on but possibly a press fit (I didn't build it), definitely no pins.

So - get it hot and drift the axle out of the wheel? I don't have press here and it won't fit in the vice.
I wll be loctiting and pinning back on!

[PH]

If you look at the Loctite website, 200°C is sufficient to break any Loctite bond. I did it by suspending the axle from the other wheel, heating mainly from below and tapping gently until it dropped off (predictably, onto my foot!)
I built it so I knew it was not a press fit, just a good sliding fit. I think you'll just have to experiment until you get enought force to move it. Using the blowlamp, hammer and drift all at once sounds like a job for 3 hands.

[mutley]

put it in a hot oven at over 200c and leave to gently roast for 15mins or until warmed through. Using the oven gloves or leather welding gloves rotate parts until separation is achieved. You shouldn't need a hammer to break the joint.

Andy

[jgb7573]

I've never tried this, but I would certainly give the heat-it-up below approach first, just in case it is held on by loctite. If it's a press fit, would a gear puller do any good? I'd be a bit concerned that using a drift might case the axle end to deform. As I say, I've never tried to do this job so would bow to those who have.

[ron]

Hi
I had to remove one of the Loctited wheels from my Simplex when I was building it as I'd forgotten to fit the eccentric for the pump, I heated the axle with a propane torch on the inside of the wheel till it was turning blue and gave it a bit of time for the heat to conduct through the joint, then supported the wheel on a Workmate and drifted it out, it still took a fair bit of force. I was a bit concerned about the wheel breaking hence the effort to get a good support over as much of it as I could. It might be a bit easier with Robroy as you don't have as big a volume of metal to heat.
Best of luck,
Ron

[Lurkio]

As it's an unknown, I'd be inclined to play it safe.
By all means try warming the job up just in case it's a loctite only joint, in which case it should then come off easily.
Other than that, I'd press it out rather than drift it....much more controlled. OK, chances are all will work out OK by belting it, but if it doesn't.....
As you're a member of a club, surely someone can loan you the use of a press or a large vice, then you can make up the stuff to support the wheel where it should be supported, at the centre, and push the axle out.
Even if it is loctited, with a solid setup it will push out cold.

Lurkio.

[tbsteam]

I had to take the wheels off the front bogie of my Lickham hall and all i used was a gear/bearing puller.

[AndrewP]

Thanks chaps, stuck the whole thing in the kiln for 30 minutes at 220C and a brass drift got the axle out quite easily, once it's cooled down I'll see about putting them back together.

Ooh, I do like it whan a plan comes together

Added later:-

By gum, that loctite 601 doesn't hang about does it? What does the data sheet say? 30 minutes? 30 seconds more like.
Anyway, back together now and back on the chassis tomorrow, when we'll see whether I've drilled the holes in my coupling rods anywhere near the right place.