Stripped Rear Hub Thread?

[Ben 0]

On a 306 not a 205 but I thought I'd ask you lot for some advice.

Got to work this morning and had a flat tyre so I put the spare on, no probs until doing up the last wheel nut. Went nice and tight then went loose and now won't tighten properly so I'm guessing its knackered the thread?

I'm gonna try run a tap through it tomorrow if I can find a M12x1.25 tap at work and hope that'll fix it, if not I guess im replacing the hub which according to the haynes book of lies is a part of the drum? If it comes to this does it mean new drums and shoes both sides to keep things even or is there a cheaper way out of this problem that I'm over-looking?

 

Cheers

[jplautomotive 0]

you may be able to helecoil it , but if not just change the drum is all i would do no point changin rest

if ok

 

just noticed you not far from me , i got both tap and die for 12 x1.25

Edited January 28, 2009 by jplautomotive

[welshpug 1,626]

if you do change the drum, its very bad practice to leave the rest, you'll end up with imbalanced brakes, potentially dangerous.

 

 

I'd take the chance to check the wheel cylinders and handbrake cables, if you do need to change the drums and shoes it wont take much longer or cost much more to sort it all out.

[tagy 1]

Have you taken the bolt out to see if its the thread on the bolt thats damaged? It is possible to damage the bolt and the hub still be fine I think.

[Ben 0]

I'm fairly sure its the hub thread that's buggered, tried winding in a different bolt with the same results.

Another random but cheaper way round the problem I thought of would be a stud and nut conversion, could that be done on a back of a 306 with drums??

[welshpug 1,626]

yes, but only if you change the stripped drum,

[Ben 0]

Dam, trying to avoid having to have the bearing pressed in and out.

[jplautomotive 0]

i can press bearing in and out for you , but be best to get new bearing though i wouldnt reuse old one

[Ben 0]

i can press bearing in and out for you , but be best to get new bearing though i wouldnt reuse old one

 

Yeah I would get a new drum and bearing, I'm going to have a proper look at it in the morning then I'll let you know.

Cheers for the kind offer

[tracktoy 0]

as good as a helecoil is i would not use one to hold a wheel on tbh

 

if it were me i'd pop down the local breakers and get a whole hub from a similar car, check it over (shoes cylinder, adjuster etc), re grease the bearing and stick the whole thing on

 

if your gonna go down the route of new bits then strictly speaking you should do both sides to keep everthing even

[GLPoomobile 958]

Reading this has really annoyed me. I've got the same problem on one of my rear drums. They were fuly rebuilt by DES only a few thousand miles ago, so the thought that I might have to replace both sides for one sodding stripped thread is really twisting my nips

 

Considering you can drive with only 3 bolts (or studs in my case) holding the wheel on, is it really that bad an idea to use a helicoil?

[welshpug 1,626]

I'm unsure about the helicoil, it is usually as strong if not stronger than the original thread, especially in steel.

 

I'd seek the advise of an engineer, I can't imagine the stresses being quite that high on them, they are an M12 bolt with a fine thread done up to 85Nm, the wheel sits on the hub flange which takes a fair amount of the load.

 

 

I wouldn't drive on 3 studs/nuts, the last car I saw attempt that was on 3 wheels within 3 miles because the other 3 had snapped, granted it was a 250bhp+ Mk2 escort rally car, so the stresses were extreeme!

 

3 stud wheels are spaced evenly if you get my meaning.

[thirdtimelucky 3]

welshpug is right heicoil's are very strong but the only thing you may have problems with is retaining it in the short thread in the hub although I have seen it done before with success make sure you use a good quailty retainer like threadlock permanant (red). would be the cheapest option. running with three bolts for a short time (3 or 4 days) if you take it steady wont snap the other bolts on a car as light as a 205 but if you are pulled over by mr/mrs plod and they notice, they might cause a fuss. as has been said if you have to change the drum it is good practise to change both sides and shoes as well the drums should come with, the new wheel bearings already pressed in to them.

Edited January 31, 2009 by thirdtimelucky