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Old 05 March 2019, 16:09   #1
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Alko axle with flange locknut

Hi

Iíve got an Alko axle on a trailer which Iíve just replaced the bearings on. I was expecting to find a castle nut with split pin but there is a locking nut with a flange at the top, it was locked in place by the edge of the flange being pressed or punched.

Is there a special tool for this job or do you whack it with a punch to dent the flange in to the split axle stub? Iíve got a new nut, the picture is of the old one while I was removing it.
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Old 05 March 2019, 16:20   #2
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It's a one shot nut one use only I forget the torque but it's quite high if you measure it its elliptical which is how it works
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Old 05 March 2019, 16:31   #3
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Thanks for the reply. The one shot nuts are usually around 290nm. This flange locknut only does up finger tight, it would usually be held in by a castle but and split pin but this axle needs this flange nut, I had never seen one before until I took it to bits!!

Iíve googled endlessly but canít find out if there is s tool or you damage the flange with a punch tool.

There was another thread on this forum a few years ago where someone had the same nut but there was no mention of how the guy secured it. @spartacus?

Edit: just realised the photo I uploaded canít be seen, not sure what has happened to it.
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Old 06 March 2019, 01:17   #4
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this is what im on about

https://www.fieldfare.co.uk/alko-sty...RoCJx8QAvD_BwE
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Old 06 March 2019, 01:33   #5
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Quote:
Originally Posted by Broadside View Post
Hi



Iíve got an Alko axle on a trailer which Iíve just replaced the bearings on. I was expecting to find a castle nut with split pin but there is a locking nut with a flange at the top, it was locked in place by the edge of the flange being pressed or punched.



Is there a special tool for this job or do you whack it with a punch to dent the flange in to the split axle stub? Iíve got a new nut, the picture is of the old one while I was removing it.


What type of bearings are they? Taper roller or sealed waterproof ball?
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Old 06 March 2019, 01:40   #6
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is it a washer under the nut that should just be folded up on two sides of the nut if so ive always done it with pliers and a hammer
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Old 06 March 2019, 02:24   #7
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What type of bearings are they? Taper roller or sealed waterproof ball?
They are taper roller bearings.

Hereís a link to the nut im talking about
https://www.trailertek.com/al-ko-hub-nut-special-b-for-stub-axles-without-split-pin

A bit more googling has shown this sort of but was once common on car wheel bearings. Itís apparently a stake nut and you use an air chisel to push the collar in to the split axle, I havenít got one of them so screwdriver and lump hammer it is for me!!!!

Thanks for all the replies.
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Old 06 March 2019, 02:26   #8
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Here’s what it looks like when fixed in place.

https://goo.gl/images/7EviWa

If anyone has ideas on the easiest way to fix and remove then I’m all ears :-)
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Old 06 March 2019, 02:28   #9
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Here’s what it looks like when fixed in place.

https://goo.gl/images/7EviWa

If anyone has ideas on the easiest way to fix and remove then I’m all ears :-)
torque up hit with a hammer & flat punch job done drive pointed punch underneath to remove
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Old 06 March 2019, 02:47   #10
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Great, thanks I will give that a shot. ��
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