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Absolute Mother of a Siezed Axle

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MahatmaAndhi
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PostPosted: 18:00 - 22 Apr 2017    Post subject: Absolute Mother of a Siezed Axle Reply with quote

The new chain and sprocket arrived, so I began to set to work on the GN125. However, the rear axle will. not. fucking. budge.

I've been trying to get it out for hours. I've twatted it with a rubber mallet more times than I know.
I've taken the entire wheel and swing arm off, laid them so that the axle is suspended and hit that fucker so much that I'm physically tired. After several hours, it's now sticking out about an inch out of the other side.

The axle turns freely. Put a wrench over the nut (the bit that's part of the axle) and it turns no problem. But moving it horizontally? No chance.

Any ideas?
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andy_uk
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PostPosted: 18:17 - 22 Apr 2017    Post subject: Reply with quote

Spray some penetrating oil on the bits you can see, wack it back in again, more oil then try tapping it out again.
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kgm
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PostPosted: 18:20 - 22 Apr 2017    Post subject: Reply with quote

Heat gun or plus gas (penetrant oil).

If you're having to hit it that hard then you might want to consider replacing the wheel bearings (less than £5 each) as you may end up damaging them. Also using heat could damage the seals if you're not careful. How big a hammer are you using?
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Ste
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PostPosted: 18:27 - 22 Apr 2017    Post subject: Reply with quote

Cut it with a hacksaw and get a replacement from a breakers or eBay. Wink
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Fisty
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PostPosted: 18:29 - 22 Apr 2017    Post subject: Re: Absolute Mother of a Siezed Axle Reply with quote

MahatmaAndhi wrote:


I've been trying to get it out for hours. I've twatted it with a rubber mallet more times than I know.

Any ideas?


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MahatmaAndhi
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PostPosted: 18:40 - 22 Apr 2017    Post subject: Reply with quote

A rubber mallet. Dunno how big. About the size of a coffee mug.
I thought about cutting it off, but then it's still stuck in the wheel itself, so I'd have to replace that too.
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Fisty
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PostPosted: 19:00 - 22 Apr 2017    Post subject: Reply with quote

Hit it harder with a lump hammer.

If it went in, it will come out.
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dydey90
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PostPosted: 19:00 - 22 Apr 2017    Post subject: Reply with quote

Hitting it with something made by Thor rather than Fisherprice will help. I generally find that a 2lb lump hammer and a big swing will shift most things.

Sounds daft, but there's generally a circlip or two that you can never see because everything is covered in grease and road dust. I've seen tiny circlips give a hydraulic press some trouble.
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Nobby the Bastard
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PostPosted: 19:17 - 22 Apr 2017    Post subject: Reply with quote

The rubber mallet is just to tickle things. If you want to actually shift stuff, 2lb lump hammer.

It's not like you can't make it any worse than a wheel that you can't put a new tyre on.
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Pete.
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PostPosted: 19:57 - 22 Apr 2017    Post subject: Reply with quote

Axles are pretty soft, twatting it with a hammer is going to ruin the end very quickly. You need to use a piece of soft ally to protect the end of the axle. Putting a tube over the large end and driving the axle into the tube held vertically on the floor will help a lot too.
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Nobby the Bastard
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PostPosted: 20:22 - 22 Apr 2017    Post subject: Reply with quote

Pete. wrote:
Axles are pretty soft, twatting it with a hammer is going to ruin the end very quickly.


So, if you can't get the fucker out what difference does this make?
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Pete.
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PostPosted: 20:42 - 22 Apr 2017    Post subject: Reply with quote

Nobby the Bastard wrote:
Pete. wrote:
Axles are pretty soft, twatting it with a hammer is going to ruin the end very quickly.


So, if you can't get the fucker out what difference does this make?


It makes a difference if you ever want to re-use it again. Knock it out and use it vs knock it out and buy a new one.
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M.C
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PostPosted: 20:57 - 22 Apr 2017    Post subject: Reply with quote

My 125 had a seized rear axle... it stayed in. Tried everything, took a blowtorch to it, even twatted it to within an inch of its life.
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Chris45
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PostPosted: 21:03 - 22 Apr 2017    Post subject: Reply with quote

Heavy duty hammer+block of wood between said items usually works for me. Get a mate (wife will do) to hold the block of wood and give it an almighty wallop. If that doesn't work try a heavy duty punch centered on the mid point of the axle. Tap it, don't whack...

Could deffo be a broken circlip or bearing stopping it sliding out though... Sad
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Nobby the Bastard
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PostPosted: 21:05 - 22 Apr 2017    Post subject: Reply with quote

Pete. wrote:
Nobby the Bastard wrote:


So, if you can't get the fucker out what difference does this make?


It makes a difference if you ever want to re-use it again. Knock it out and use it vs knock it out and buy a new one.


If you have to belt it that hard with a lump hammer, the fucker is fucked.
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Sload
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PostPosted: 21:27 - 22 Apr 2017    Post subject: Reply with quote

We need pics
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Andy_Pagin
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PostPosted: 21:34 - 22 Apr 2017    Post subject: Reply with quote

You could try a Kango hammer with a metal block protecting the axle from the chisel, vibrate the bastard into submission.
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pepperami
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PostPosted: 22:37 - 22 Apr 2017    Post subject: Reply with quote

Knock it out as far as it will go and squirt the dry end with penetrating oil , then knock it back in.
Repeat many times.
Each time you will get the oil in a bit further.

If you can get some rotation on the axle, that will help.
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V2
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PostPosted: 08:35 - 23 Apr 2017    Post subject: Reply with quote

Bigger hammer

https://s-media-cache-ak0.pinimg.com/736x/85/6d/07/856d07a5d284e6bd0f1587ef3dab410e.jpg

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kramdra
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PostPosted: 14:38 - 23 Apr 2017    Post subject: Reply with quote

Probably sprocket carrier bearing spacer siezed in place. I have had this, chopped the axle. Large sledge hammer wouldnt shift it, almost bent the swingarm.
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Rogerborg
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PostPosted: 17:10 - 23 Apr 2017    Post subject: Reply with quote

Chris45 wrote:
Heavy duty hammer+block of wood between said items usually works for me.

I've just split several blocks shifting my Nazi Tractor axle. It did shift eventually though. PlusGas in between all the components, wiggle the wheel side-to-side to try and break the bond between the axle and whatever it's binding on.
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nowhere.elysium
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PostPosted: 18:05 - 23 Apr 2017    Post subject: Reply with quote

Nobby the Bastard wrote:
Pete. wrote:

It makes a difference if you ever want to re-use it again. Knock it out and use it vs knock it out and buy a new one.


If you have to belt it that hard with a lump hammer, the fucker is fucked.

Only if you're a total spastic. Pete's advice is sound.
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MahatmaAndhi
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PostPosted: 19:24 - 24 Apr 2017    Post subject: Reply with quote

I just bought a dead blow hammer and a set of punches (that go up to 9.5mm). I'm gonna have to buy a new rear axle anyway, so I'm going to hammer the living daylights out of it until it gets the fuck out... tomorrow, as I just put the kids to bed.
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Sload
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PostPosted: 21:08 - 24 Apr 2017    Post subject: Reply with quote

Seriously, do a short vid of it with you manipulating it for people to see (the axle, don't get kinky). Couple of experienced peeps here might save you a bit of bother.
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Skudd
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PostPosted: 21:28 - 24 Apr 2017    Post subject: Reply with quote

Put the nut back on but keep it at the top of the axle to protect it and also give yourself a bigger area to hit. Just a normal everyday hammer will do and a bit of time and muscle. You will need to change the bearings as this is what the axle is stuck on. Also give the axle a good clean afterwards.
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