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REAR DOOR FAILURE

Re: REAR DOOR FAILURE

Postby Jorrie » 09 Jan 2017 05:17

Henning
Thank you for this well written report.
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Re: REAR DOOR FAILURE

Postby mve100 » 09 Jan 2017 09:50

Thanks, anyway I coulc contract you to do this on my Patrol as well :wink: ? Have also been to a few panelabeaters for qoutes etc.
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Re: REAR DOOR FAILURE

Postby Picasso » 09 Jan 2017 18:38

mve100 wrote:Thanks, anyway I coulc contract you to do this on my Patrol as well :wink: ? Have also been to a few panelabeaters for qoutes etc.


Well...

It took me about 20h to do the job... which meant sacrificing a weekend.
I also spend a number of hours sourcing the required materials and tools.
Cost in material and small tools about R 2000.
But it was not the potential "cost-saving" which made me try to do the repair myself but rather the uncertainty of what I would get (and how long it would last) when handing the car over to a pallbearer

:salute:
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Re: REAR DOOR FAILURE

Postby mve100 » 10 Jan 2017 09:53

I must actually just bite the bullet and get it done but I am also working on a plan to convince Swambo that I need to replace the rear bumper as well :cool:
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Re: REAR DOOR FAILURE

Postby mattk » 10 Jan 2017 10:24

Did Nissan uprate these on later models, I have a 2010 and would like to know if I need to take preventative measures before anything goes wrong. My tyres are larger than standard, so will add additioanl weight. It is a 2010 with 114k km on the clock, no issues yet. :think:
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Re: REAR DOOR FAILURE

Postby jonathan » 10 Jan 2017 11:40

I discovered last week that my door has done the exact same thing :thumbdown:. Not sure if it happened after I stuck the bigger tires on there or if it was already cracked before. So I will also need to make a plan :think:
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Re: REAR DOOR FAILURE

Postby Picasso » 10 Jan 2017 14:27

Hi Matt

I very much doubt that anything was updated / improved.
A sensible update would have been a significant increase in size of the reinforcement piece which is welded on the inside of the Door / Window Frame.

Have a look at the (borrowed) picture below . From the outside you can sort of see the welding points were the reinforcement piece is welded on on the inside. Assuming they would have increased the size / length of the reinforcement piece than you should be able to see welding points higher up.
_MG_2435.jpg
_MG_2435.jpg (68.36 KiB) Viewed 237 times
_MG_2439.jpg
_MG_2439.jpg (34.5 KiB) Viewed 237 times


To Jonathan

I think that the "bending force" / i.e. load on this specific area which causes this kind of crack / metal fatigue mainly occurs during the closing process of the door. When the door is closed there should be very little force on this areas as everything is locked and held in place.

This bending force during the closing process will be even bigger if the door is sagging / not properly aligned.
If the door is misaligned you have virtually a double impact.

The more you open and close the right hand side the more wear on the hinges.
You could also say that the increased weight of a bigger tyre will have an effect on the wear of the hinges.

So.. I think it is important that the alignment of all components of the barn-door assembly is as good as possible in the first place to avoid premature fatigue failure.
At the bottom of your RH barn-door you have a horizontal striker (round bolt) .
This striker slips into a tapered guide mounted on the vehicle side.
Make sure that both components are aligned perfectly.

:thumbup:
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Re: REAR DOOR FAILURE

Postby mve100 » 10 Jan 2017 14:39

Misalligned is definitely where my problem started
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Re: REAR DOOR FAILURE

Postby ricster » 10 Jan 2017 14:53

What is the difference in tyre weight between the standard 265/75/16 all terrain, highway and muddie, as well as the weigh difference then to the 285/75/16 muddie and AT tyre. I cannot believe that the weight difference would be that big a difference..... maybe a few kilos, so I think there is more to the alignment thing than we think. I have been carrying around a 33" tyre for 5 or 6 years on the back door and ( touch wood ) no cracks.
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Re: REAR DOOR FAILURE

Postby mattk » 10 Jan 2017 15:00

Bear in mind that I have the 285/70/17 BFG M/T KM02. Picking that up compared to the original 275/65/17 Yokohama Geolander it came out with is a difference that my biceps definetly feel :oldtimer: :salute:
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