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Offline Colin 009

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Nyloc nuts
« on: June 24, 2005, 15:45:43 »
Ok here goes, nyloc nuts as I understand it cannot be re-used, am I right or wrong.

I ask this because the Main stealer I haveing a dispute with said that they can be re-used and that the instructions they have from Land Rover with regarde to the saftey recall notice do not say the nuts need to be replaced.

The nuts are the ones holding the anti-roll bar.
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Offline Eeyore

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Nyloc nuts
« Reply #1 on: June 24, 2005, 15:54:32 »
Hmmm,

In theory they should be replaced, especially from a main dealer (I'll bet they charge Land Rover for them even if they don't fit 'em!).

In practice, they'll most probably be alright. But even so it's not best practise.

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Offline muddyweb

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Nyloc nuts
« Reply #2 on: June 24, 2005, 15:56:13 »
I tend to agree.. I must admit to re-using nylocs if they look OK... not what you are "supposed" to do, but they seem OK.

If I was a charging garage, then I wouldn't dream of not changing them...   you only need to have one come loose and you have a lot of problems.
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Offline luffy

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Nyloc nuts
« Reply #3 on: June 24, 2005, 15:57:51 »
In the aircraft industry, nylocs are never used as they are not considered Class A locking and are intended for once-only applications.  A more substantial Class A locking is used such as split pins or all-metal lock nuts.

That said however I should think that providing the run-down torque was still within limits then it would be OK to re-use nylocs on a vehicle.

To that end, my propshaft nylocs are on their third use as they're still gripping the bolt satisfactorily.
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Offline hobbit

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« Reply #4 on: June 24, 2005, 20:21:25 »
What you could do if you were in doubt about security of the nut would be refit them with spring washers or star washers, bit of extra hold then.
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Offline V8MoneyPit

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« Reply #5 on: June 25, 2005, 09:58:40 »
As Andy suggested, it is the correct tightening that keeps the nut from undoing. The 'locking' feature is simply a safety backup.

No nut or bolt should require any locking device when tightened to the correct torque. The stretch created in the bolt or stud provides sufficient clamping to stop any movement, so long as the correct fastener is used for the application.
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Offline Xtremeteam

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Nyloc nuts
« Reply #6 on: June 25, 2005, 12:42:52 »
AFAIK you only require 3 threads between a nut & bolt to give it its full tesile strength
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Offline Manicminer

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« Reply #7 on: June 25, 2005, 12:47:51 »
What I find with reusing nyloc is that the thread goes before the nyloc bit loses it's stickability.
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Offline Colin 009

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Nyloc nuts
« Reply #8 on: June 26, 2005, 21:27:09 »
Just had a look through the workshop manual and section 64 (rear suspension) it says when reffiting the anti-roll bar.

Refit

5. Loosely fit, bolts, washers and new nyloc nuts.

So this is what I'm going to go by, when I hear from L.R. or HR owen.
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Cheers.
Colin,
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