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Old 13 August 2013, 05:50   #1
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split pin/cotter pins

Just a quick question always wondered which way/how should a split pin be put in.

Am I doing it the right way?
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Old 13 August 2013, 05:51   #2
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Ok pictures don't seem to be uploading second try
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Old 13 August 2013, 06:02   #3
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Ok pictures don't seem to be uploading second try
That's Fine. It's holding the nut from turning, it's neat and out the way of the cap. And it can be easily straightened to remove it again.
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Old 13 August 2013, 06:10   #4
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Sorted thanks. Trailers ready to go just waiting for my boat floor to be repaired then I can hit the water once again
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Old 13 August 2013, 06:48   #5
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It's hard too tell from the angle of the picture but it looks like you may have tightened the castle nut too much the split pin should sit nicely between the notches on the nut
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Old 13 August 2013, 06:52   #6
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Also if its your first time using a torque wrench and now how much torque is needed helps so you get it right.
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Old 13 August 2013, 07:05   #7
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Also if its your first time using a torque wrench and now how much torque is needed helps so you get it right.
If you're using a torque wrench on a taper roller hub nut, you're doing them up too tight. Make sure there's nothing on the thread that'll make it snatch then do it up fingertight, til there's no movement. Sometimes it'll mean that it looks odd and like the nut's gone too far as in the pic. It's more abou the nut not being tall enough.

Even my 3/8 bike torque wrench that gets used for torquing down M6 bolts to 6lb/ft into aluminium threads doesnt go down low enough for that.
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Old 13 August 2013, 07:11   #8
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Hi NOS,

Yes mine are done finger tight, but was trying to come up with a fail safe way for someone new to changing bearings or whatever could get it right and have the confidence it is right. i just tighten the castle nut until I can see the split pin hole through the castle nut notch and can get the split pin in.

Didn't know that torque wrenches couldn't go that low, every day is a school day!
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Old 13 August 2013, 07:17   #9
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Have to agree with Nos on this one. Finger tight then a GENTLE tighten with a spanner then back off to line up the holes with the castle nut ! Should spin freely with no wobble in the hub & silently if your bearings aren't shot.
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Old 13 August 2013, 07:25   #10
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Didn't know that torque wrenches couldn't go that low, every day is a school day!
Hi AJ
The cheap deflection type of torque wrenches are so innacurate they can be anything up to 200% out at low settings. I won't even use them except as a breaker bar if there's one lying around. I certainly wouldn't put a motor back together with one.
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