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Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5970
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Re: HUB Separating from Axle


quote:

jalalski wrote:
Another one for the recall thread I reckon.



ABSOLUTELY

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Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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8/Jul/2007, 3:58 pm Link to this post Send Email PM   Send Private Message Blog
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: HUB Separating from Axle


OK Guys,

I have bee gathering information about this (design fault I will now call it) and talked to my mechanic about it as well.

When I told my mechanic what has happened to Craig and others, he said that is very strange and shouldn't have happened at all, but he didn't rule out a foul play by whoever serviced the hub last. He also was very surprised to hear about the need to use locktite in that area and never seen a hub nut held in place by locktite!

When he asked me if our hub nut was lockable, meaning the locking pin going straight through it, I said, nope, the pin sits away from the hub nut and there is about 2-3 treads where it can come loose.

As soon as I said that, the mechanic stated that it is a design fault indeed and it is not the way it's done on other cars where the hub nut is secured by either of the following methods:

1. Hub nut having a hole in it for the locking pin to go through when it is tightened in place.

2. Hub nut having a locking crown covering it which has grooves for the locking pin to go through to ensure the nut doesn't get loose.

We have talked about ways of fixing this problem and he suggested that we make something up where we could fill the gap between our hub nut and the locking pin, so we could put a crown on it.

One of the options was to fit another nut on top of the existing one and then have the crown on the second nut and the locking pin going through the crown.

We will be exploring this possibility soon and see what we could come up with.

Last edited by jalalski, 15/Jul/2007, 11:07 pm


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15/Jul/2007, 11:06 pm Link to this post Send Private Message MSN Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5970
Reply | QUOTE
Re: HUB Separating from Axle


quote:

jalalski wrote:
One of the options was to fit another nut on top of the existing one and then have the crown on the second nut and the locking pin going through the crown.



Is the space enough to have a spring washer or two flat washers under the existing nut to have it tighten so that the edge of the existing nut finishes flush with the pin hole ?

Or would a nyloc nut be just that little bit bigger with its top rim so that there would be no gap between it and the pin ?

My preference would be the nyloc nut and have it replaced when the bearings are replaced.

Last edited by Revhead Kev, 16/Jul/2007, 7:34 am


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16/Jul/2007, 7:31 am Link to this post Send Email PM   Send Private Message Blog
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: HUB Separating from Axle


OK Guys,

Today I had my rear pads replaced and the discs machined, so I had a closer look at this Design Fault

There are 4-5 treads between the edge of the hub nut and the locking pin that would fit another nut, but it is far too wide for any sort of spring washer to raise the existing hub nut.

My mechanic was astonished when he saw how far the locking pin was from the hub nut and suggested that I have this hub nut completely changed with another one that comes already with the locking crown and would reach the existing locking pin.

He gave me the details of a local manufacturer that has these hub nuts and I will soon go there and see what they have on offer.

In addition to this design fault, the hub nuts and the locking pins on my exy all looked rusty as hell, which made me worry about them even more!

P.S. None of them were loose.

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16/Jul/2007, 10:00 pm Link to this post Send Private Message MSN Blog
 
RomanSA Profile
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Date Registered: 12-2006
TOTAL POSTS: 26
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Re: HUB Separating from Axle


Jalal, does this apply to all four wheels?Does it apply to '06 and '07 models as well?

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16/Jul/2007, 10:09 pm Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: HUB Separating from Axle


Yes Roman, applies to all four wheels and all exy models.

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16/Jul/2007, 10:41 pm Link to this post Send Private Message MSN Blog
 
RomanSA Profile
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Date Registered: 12-2006
TOTAL POSTS: 26
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posticon Re: HUB Separating from Axle


I had a word to my local service manager today about this issue. He said that in 20yrs he had never seen one seperate, including Pulsars. He wouldn't comment on the gap between the split-pin and the hub retaining nut other then to say that it is the way it has been engineered and did not think placing anything to take up the gap would be a good idea.
IF I was to try and eleviate this gap I would take a wheel of to see the size of the washer I would need to place between the split-pin and the hub retaining nut. I would then buy four 3/4inch metal washers (56c each from Bunnings)and carefully machine out the centre to make sure that they fitted over the axle.
I would then place one between the split-pin and the nut and replace the tyre. If I was to remove the rear tyres I would be rather suprised to find that the split-pin on both back tyres as fitted by the factory was dark green in colour and having part of a split missing, so that only one part of the 'split' could be folded around the axle not the two parts as per a normal split-pin and as was on the front tyres. Having completed this on all four wheels I would then take the car for a drive, paying attention to any sign of a wheel being out of balance or something out of the normal. I would then have all 4 wheels checked at every service on a regular basis.
IF I did this it would of-course mean that the hub-retaining bolt was not touched at all during the process.....that is, IF I did this

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28/Jul/2007, 9:14 pm Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: HUB Separating from Axle


Hey Roman, you should have told the service manager to have a look in our forum to change his 20 yrs view on this emoticon

The argument is not about the way it has been engineered, rather the way it has been incorrectly designed and the guy at Nissan should have asked himself that question when compared to other newer cars on the road which don't have this point of potential failure.

Last edited by jalalski, 28/Jul/2007, 9:54 pm


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28/Jul/2007, 9:51 pm Link to this post Send Private Message MSN Blog
 
duxbac Profile
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Date Registered: 02-2004
TOTAL POSTS: 288
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Re: HUB Separating from Axle


Hi,had a look at my wheels yesterday and was amazed to see the hub split pin sitting there on its own.All hubs had a gap between the nut and the split pin.Very poor design,design with a locking arrangement for the nut would have been better.

Has anybody had a look at a new nut.Does the nut just rely on how much torque you do it up with to keep it on,or do nissan use loctite to retain it,and the split pin as a back up.Mine are tight anyway and not rusty at all cheers
31/Jul/2007, 8:56 am Link to this post Send Email PM   Send Private Message
 
GeoffM Profile
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Date Registered: 07-2004
Location: Sydney
TOTAL POSTS: 258
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posticon Re: HUB Separating from Axle




Just for the record, my Xtrail just did a HUB. Front left. 112,000 km.
$600 to replace hub and bearing (hub cost $330 just for the part!).


 8(

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