Torqueing of wheel nuts

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Castor

Trainee maniac
Posts
669
Location
Ebley, Glos.
I'm just changing the wheels on my newly acquired series 3, and breaking the nuts off is being a right PITA. It's taking my weight bouncing on a 2-foot bar to crack these - and the studs are lubricated.

That means five or six hundred foot pounds of torque has been used to put them on (previous owner was "an expert") which is probably at or near the yield point of the studs - so I am going to have to replace them now.

What is it that induces people to do nuts up so ****ing tight?

Other than rank stupidity?
 
I'm just changing the wheels on my newly acquired series 3, and breaking the nuts off is being a right PITA. It's taking my weight bouncing on a 2-foot bar to crack these - and the studs are lubricated.

That means five or six hundred foot pounds of torque has been used to put them on (previous owner was "an expert") which is probably at or near the yield point of the studs - so I am going to have to replace them now.

What is it that induces people to do nuts up so ****ing tight?

Other than rank stupidity?

not necessarily , i find the older worn hub studs and nuts often are very hard to undo after sometime even if torqued correctly
 
not necessarily , i find the older worn hub studs and nuts often are very hard to undo after sometime even if torqued correctly

Understood - however these are lubricated with copper grease, and they squealed as they released - which means that steel is bearing on steel and has displaced the grease.

Every stud is necked - I'm glad they are cheap!
New nuts and studs all round - and no blimmin airguns again - ever.
 
Understood - however these are lubricated with copper grease, and they squealed as they released - which means that steel is bearing on steel and has displaced the grease.

Every stud is necked - I'm glad they are cheap!
New nuts and studs all round - and no blimmin airguns again - ever.

so are many i work with , it seems to me that wheras some are obviously over tightened,and your probably are,i still struggle undoing quite a few that havent and its allways on hard worked or older motors
 
crunch.jpg

I hate tyre fitters with windy guns...... :cool:
 
so are many i work with , it seems to me that wheras some are obviously over tightened,and your probably are,i still struggle undoing quite a few that havent and its allways on hard worked or older motors

My series nuts were v hard to remove also. If you look they are dished to press fit against rim so its not so much torque tightening which I used to go about 90lbs, as they have formed a push fit they need much more than 90lbs to remove. Any tyre fitter using an impact wrench to tighten wheel nuts without a torque limiting extension is a lazy knob who didnt listen in college!
 
I have to admit that I do sometimes use my air gun to put them on...luckily my air gun is so ****e I end up nipping them up with the bar afterwards...tyre fitters should all be given the fisher price job that I've got and an idiot proof torque wrench...I was impressed when I got stuck and needed a tyre for my last car and the Kwik fit bloke used a proper torque wrench - until I looked closers and it was set at 120lbft instead of 120 Nm...oh well..
 
I had a watch while having my aircon recharged....

My local K***-F** fitters do them by overtightening them *first* using the windy gun, then checking that they have been properly overtightened using a torque wrench (almost certainly set to ft/lb rather than N/m as you suggest).

As a "quality check"another fitter double checks that they have definitely been properly overtightened by using a different improperly set torque wrench.
 
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