Wheel removal tips

[greybeard]

Having a great deal of difficulty removing the wheels of my Puma 40. Both are seized on the shaft and are resisting removal with both two and three jaw pullers. I'm going to have to find a solution quickly because the tyres are getting very thin and I don't want to be stuck somewhere with a flat. Any tips appreciated. Thanks.

[rover220]

Undo the 4 6mm hex key bolts. You'll need to use a 13mm spanner on the nuts behind. Tricky but possible. Will then be easier to pull the hub off without the wheel being on the way.

[greybeard]

Thanks Rover. I tried undoing those bolts once before. I think they must have had red loctite on them because they wouldn't move at all. I will try it again, but am not hopeful. Any other ideas?

[steves1977uk]

https://www.quora.com/How-do-I-remove-a ... er?share=1

Steve

[greybeard]

Thanks Steve. I was aware of this but am reluctant to use heat so close to the motors, even if it was possible to get access for adequate heat to reach the nuts inset so far into the rear of the wheels. Even if the tyres are cut off, I doubt there would still be room.

However would have thought a straightforward wheel swap was going to be so damned hard to do? They don't have this trouble with Formula One

[hank]

Can you get access to a impact wrench
Or get a socket type Allen bit then knock
It on wheel screws first to shock the screws
Failing that get a long tube over bar for
More leverage.

[greybeard]

Cheers, Hank. I've got an impact driver somewhere. I'll dig it out and give it a go.

[alfiepink]

If it was me i would use impact wrench. Can you use some penetrating oil ?

From alfie

[rover220]

If it was me i would use impact wrench. Can you use some penetrating oil ?

From alfie

Oil no use against threadlock.

[expresso]

Do wheel bolts have to have Tread lock on them ? i recall when my tech replaced mines - there wasnt any on the bolts to hold the wheel to the motors - and he didnt add them either - i asked him - he said wasnt needed - - i never gave it any though after that and its been fine - the only small amount of blue tread lock was found on the Rims - two part rims - i have about 8 allen screws going around the rim which did have some on there - not sure it was re added since the bike shop did the work - i asked them to add it and supplied it at the time -

but the bolts themselves - 4 going to the motors - i know didnt have them - - have to be strong to remove them and re tighten for sure -

chair was quickie 646se - i see those are smaller allen bolts - not the same as used on mines - that could be the difference and maybe there is thread lock there -

[rover220]

Do wheel bolts have to have Tread lock on them ? i recall when my tech replaced mines - there wasnt any on the bolts to hold the wheel to the motors - and he didnt add them either - i asked him - he said wasnt needed - - i never gave it any though after that and its been fine - the only small amount of blue tread lock was found on the Rims - two part rims - i have about 8 allen screws going around the rim which did have some on there - not sure it was re added since the bike shop did the work - i asked them to add it and supplied it at the time -

but the bolts themselves - 4 going to the motors - i know didnt have them - - have to be strong to remove them and re tighten for sure -

chair was quickie 646se - i see those are smaller allen bolts - not the same as used on mines - that could be the difference and maybe there is thread lock there -

Not used that often as wheels can be removed serveral times the threads get gummed up really quick if it's used every time. Not many people bother cleaning the old stuff out before using fresh.

[greybeard]

I don't know whether there is any on the threads. Just speculating as the bolts are very tight, but it was a pre-owned chair so don't have a history. I watched some YouTube clips on releasing bolts but learned nothing you guys haven't covered other than that steel bolts through aluminium tend to bond and get hard to release. I don't think these bolts are in direct contact with any Ali.
Managed to get some penetrating oil round both ends of the bolts so we'll have to see if that helps.
Thanks again.

[shirley_hkg]

HEAT will be most effective .

Wrap a damp cloth around the shaft of the gearbox , and aim flame of a small torch at the bolt .

[Burgerman]

[rover220]

I use one of these when the going gets tough.

http://www.bosch-professional.com/ng/en ... -ht-225590

[Burgerman]

We are sorry! / Es tut uns leid!
Page not found / Seite nicht gefunden

[rover220]

https://www.ffx.co.uk/tools/product/Bos ... 0Ah-Li-Ion

[Burgerman]

That takes all the effort out of it! Torque free. Even a weakling can use those.

[hank]

Can you get access to a (impact wrench)
Or get a socket type Allen bit then knock
It on wheel screws first to shock the screws
Failing that get a long tube over bar for
More leverage.

[greybeard]

https://www.ffx.co.uk/tools/product/Bosch-Gds-18-V-Liht-3165140726542-18V-High-Torque-Impact-Wrench-2-X-4.0Ah-Li-Ion

If anyone wants to bank transfer 380 quid to me I'll order one today!

It does seem a trifle extravagant for a single use application though, so it's probably gonna be a trip to the hire shop when it opens agin.

[rover220]

That takes all the effort out of it! Torque free. Even a weakling can use those.

Yes, yes they can. Makes life much easier.

[Burgerman]

I have a cheap air wrench, does much the same. For those wondering these things are reaction free. Meaning they apply a hammering force to undo a bolt/nut but do not twist the tool in your hand. So even a 7 year old girl can undo a very tight bolt!

[rlnguy]

Couple comments-
If there are nuts on the back, that would indicate to me that the axle flange is not threaded-and heat probably won't help. You'll have to find a way to hold the nuts, from turning. That might mean making your own wrench (spanner).
The bolt heads appear to be, what we call, here in the US, "button head". In my experience, they tend to strip out the head, quite easily.
You might have to drill them, enough to break the heads off. I'd be inclined to start with a drill, that fits in the socket, and drill, just deep enough to create a center, for a smaller drill, then drill in a ways with a smaller bit-that will make following with a larger drill easier. Then switch to a drill that is about as big as the bolt-the photos looks to be about 8mm. With a little luck, the heads of the bolts will come off, and you can get the wheel off.
I'd suggest using a different head style, for the replacement bolts.
As a last resort, if they are air tires, it might be possible to change them, with the wheel on the chair.
Not easy, but I've done it more times than I care to count.
good luck

[flagman1776]

The outter 4 bolts have 2 functions... the wheel itsellf is a split rim... there are 2 halves. Have you removed the valve stem & deflated the tube otherwise the air pressure puts pressure on these bolts. The bolts also go through a wheel hub flange either threaded into it or with nuts on the inside.
Been there, done that...

[rover220]

The outter 4 bolts have 2 functions... the wheel itsellf is a split rim... there are 2 halves. Have you removed the valve stem & deflated the tube otherwise the air pressure puts pressure on these bolts. The bolts also go through a wheel hub flange either threaded into it or with nuts on the inside.
Been there, done that...

Not in this chair they don't.

[flagman1776]

https://www.manualslib.com/manual/95359 ... =58#manual

[woodygb]

https://www.manualslib.com/manual/95359 ... =61#manual
https://www.manualslib.com/manual/95359 ... =62#manual

[greybeard]

You beat me to it, Woody!

[woodygb]

It would APPEAR that the wheel rim is split on the outer edge and the wheel rim assembly is attached ... by the 4 bolts / screws... to a keyed carrier on the motor shaft.

I have seen a similar combo on mobility scooters and the 4 bolts/screws had nuts that where retained in recesses on the reverse side of the main drive coupling.

[rover220]

It would APPEAR that the wheel rim is split on the outer edge and the wheel rim assembly is attached ... by the 4 bolts / screws... to a keyed carrier on the motor shaft.

I have seen a similar combo on mobility scooters and the 4 bolts/screws had nuts that where retained in recesses on the reverse side of the main drive coupling.

That's exactly how it is. May have nuts or the hub may be threaded. Depends on the age.