Hub nuts
Author
Discussion

SPR117T

Original Poster:

171 posts

258 months

Friday 7th April 2006
quotequote all
I know this is a fairly common fault and each track day I check and mark up the rear hub nuts (ford Mondeo type). But the n/s/r constantly works loose. I have changed it several times, I have now resorted to drilling out the centre section on my M12 GTO-3 so I can inspect it at track days just so I don't have to keep removing the wheel. The disc is not warped, the wheel is balanced, the wheel bearing is fine, the shaft splines have no play, there is no vibration felt!!!
It is driving me mad as when it becomes loose the pads get pushed back by the disc and the pedle gets very long.

Anyone else had this problem, is there a solution/modification

robp

2,097 posts

270 months

Friday 7th April 2006
quotequote all
Paul -never had this issue myself but know of others who have. 'Fraid I don't know the solution, but at least you know it's not unique. Have you tried a search on this forum? I know there is stuff out there. Otherwise wait for one of the other frustrated parties to respond.

silversix

258 posts

261 months

Friday 7th April 2006
quotequote all
Lockwire it somehow?

GTO400

1,877 posts

280 months

Friday 7th April 2006
quotequote all
I fitted a new nut and loctite,then cut the old nut down to 10mm thick and used it as a locking nut to the main one.
Kevin

joust

14,622 posts

288 months

Friday 7th April 2006
quotequote all
Loctite red or green? They need heat to unstick them and are much stronger than the blue.

www.loctiteproducts.com/products/subcategory.asp?CatID=10&SubID=48

J

washy

950 posts

305 months

Friday 7th April 2006
quotequote all
I've heard GTO400's method of adding a cut down nut as a locking nut is best.

gizard

2,270 posts

312 months

Friday 7th April 2006
quotequote all
I had a spate of these problems as well - but my car has been off the road for 7 months so I don't know whether I still have the problem.
Surely using a cut down nut on top of the other one can't make that much difference as the nut it's self is made up of lots of layers anyway?
The only thing I did was locktite it and do it up with a 4ft wrench handle - ie f'ing tight.

GTO400

1,877 posts

280 months

Friday 7th April 2006
quotequote all
f'ing tight is not advisable the nut should be tightened to the correct torque then tighten the second nut against it. Two nuts tightened against each other is a very old proven way of locking a nut

SPR117T

Original Poster:

171 posts

258 months

Friday 7th April 2006
quotequote all
The idea of locking the second nut against it is fine, however I would think that cutting down the second nut would be a waste of time because
a) The old nut would fall apart when cut down
b) The old nut is already stretched hence the reason it came loose in the first place

I have taken on board the advise and will be using a second nut as suggested but not the used original one

chippie

84 posts

267 months

Sunday 9th April 2006
quotequote all
I had the same problem, replaced the nut and used Locktite. Seems fine now. I have heard that Vegantune are working on a replacement using two locking nuts, Porsche based I think.

V6GTO

11,579 posts

271 months

Tuesday 11th April 2006
quotequote all
I've had this a few times (see my old posts} but I haven't had the opportunity to give the car a good roasting lately as I've developed a ball joint squeak.

Martin.