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Esky1964 Profile
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Date Registered: 06-2007
TOTAL POSTS: 22
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Re: HUB Separating from Axle


Hey Jalal,

The local mechanic I use is not Nissan-specific but is Nissan-trained.

He mentioned that this particular fault is also common with several Toyota's (notably Celica's) and he mean't in a repetitive sense on the same vehicle.

Worth watching out for.

Just to emphasise the initial symptom (and the key is catching it early), I noticed a rubbing/grinding noise under accelaration and sweeping RH bend. It wasn't consistent but it was there more than not. Nissan dealer suggested brake pads rubbing???

I presume that the same problem on RHS would probably produce similar symptom on sweeping LH bend.

I hope this info helps someone address the problem earlier than I did (the first time) and save themselves $600 on replacement hub &
bearings.

Cheers
Craig


Admin Edit: Please refrain from using offensive language in your posts or abbreviations to that effect. Our forum rules are very clear in this regard.


Last edited by jalalski, 2/Jul/2007, 10:06 pm
2/Jul/2007, 10:00 pm Link to this post Send Email PM   Send Private Message
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5977
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Re: HUB Separating from Axle


quote:

jalalski wrote:
Am surprised we didn't here more of these cases, especially in Australia where exy bashing off-road is very popular compared to other countries.



Yes, for a vehicle which is advertised as off-road capable, it does not seem like a sound method of fixing the hub nut.

Edit ... following up in the service manual, it does not even suggest locktite on the nut, just a new cotter pin emoticon

Last edited by Revhead Kev, 3/Jul/2007, 2:26 pm


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Esky1964 Profile
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Date Registered: 06-2007
TOTAL POSTS: 22
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Re: HUB Separating from Axle


Agreed Kev!

My mechanic called the local Nissan dealer who confirmed that -
a) yes, the nut can back off several turns before it hits the split pin (and there is no intermediate locking nut)

b) this can allow a significant amount of play in the wheel (even when only backed off a thread or two)

c) Nissan do not even suggest loctite is neccessary

I can't believe no-one else has had the problem given how dodgey this arrangement is.

Maybe others have had to have premature wheel bearing replacements and never thought to seek an explanation as to why?

Just a thought.
Anyway, I hope my experience helps someone.

Cheers - Craig
4/Jul/2007, 9:34 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


quote:

Esky1964 wrote:
Maybe others have had to have premature wheel bearing replacements and never thought to seek an explanation as to why?
Cheers - Craig



Now that you mentioned this, there has been several cases of premature front wheel bearing replacements indeed and in newer models too!



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Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5977
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Re: HUB Separating from Axle


Hi Craig,
Does your mechanic think there is enough room between the nut and the cotter pin for a second nut ?
Maybe this might be an easy way to limit the amount of loosening.

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lancie49 Profile
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Date Registered: 01-2007
Location: Melbourne, VIC, Oz
TOTAL POSTS: 109
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Re: HUB Separating from Axle


Could a castellated nut be fitted in place of the origianal ?
One of the local bolt/nut/fastener specialists should be able to get something suitable I would think.
Maybe a simple washer/spacer between the hub and nut or nut and split pin.
I haven't had a look at the hub set up so I may be way off the mark here.

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5/Jul/2007, 10:14 am Link to this post Send Email PM   Send Private Message
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5977
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Re: HUB Separating from Axle


Here are the details from the service manual.
Image


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Esky1964 Profile
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Date Registered: 06-2007
TOTAL POSTS: 22
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Re: HUB Separating from Axle


Kev/Lance,

The mechanic said there is a fair bit of room (probably enough for a thin locking-type nut). I can't understand why Nissan would leave it out permitting the single nut to back off so far that the hub can flap around causing damage. Even the hub on a pushbike wheel has a second locking nut!

I think you're right Lance that a simple spacer/washer would do the trick coupled with the existing split pin.

When the mechanic checked with the Nissan dealer, they told him that a castellated (I thought he said tessalated) nut was fitted to the Pulsars to protect against this occuring but for some unknown reason (maybe to save 20 cents) they didn't fit them to the X-trail and dropped them from the Pulsar range at the same time.

I will definitely do this to provide an extra level of protection for the sake of a couple of cheap washers.

Cheers
Craig
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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


Thanks Craig, I will get my mechanic to put these washers/nuts too.

Having larger rims and tyres would most probably speed up the loosening process am sure.

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jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
Reply | QUOTE
Re: HUB Separating from Axle


Craig,

Cases have started to emerge of this fault as soon as I mentioned that it will cause premature wear of the wheel bearing.

Another case exactly like yours has been reported by a UK xtrailer with a 12 month old exy and the hub nut has also back off and was only held in place by the split pin!

It cost the dealer over 800GBP to have this fixed and a new hub was ordered.

What were you thinking Nissan!!!!emoticon

Another one for the recall thread I reckon.

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