Diff-Lock Light Reverse Logic???? - Defender Source
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  #1  
Old October 11th, 2006, 12:53 AM
MonLand
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Loic Fabro
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Diff-Lock Light Reverse Logic????

Hi,

I recently replaced a few seal on my T-Case ('95 D90). As I did that I got the
opportunity to try to fix/replace the screw/sensor that make the diff
lock light up when the diff lock is engaged.
I "kinda" had to screw it quickly to go to MAR on Friday night and I
might have not done it properly (read "I did not re-read the setup
steps from the workshop manual").
Now the behavior is:
- the diff lock light turns on when the diff lock is supposed to be
disengaged.
- the diff lock light turns off when the diff lock is supposed to be engaged.
=> exactly the opposite from what I expected

So.... Did anyone run into a similar issue? I don't think there is a
way to mess up the way the T-Case is installed, but.... maybe I don't
remember it correctly. I would like to avoid removing all that trim if
I don't have to! :-)

Thanks,
MonLand
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  #2  
Old October 11th, 2006, 12:09 PM
MonLand
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Loic Fabro
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Just as additional information: the bolt/switch is just an on/off switch and can not be wired incorrectly. I would still love to hear that this is due to a simple mistake that can easily be corrected....

Thanks,
__________________
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I have an ex MoD and an ex wife. The two no longer conflict with each other.
Quote:
it is not hoarding it is selective collecting
---
MonLand
1995 D90 NAS
1996 Discovery NAS
2006 LR3 NAS (hers, but comfy! :) )
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  #3  
Old October 11th, 2006, 01:21 PM
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Roadsiderob
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Robert Dassler
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I don't think you can incorrectly install the switch. It is a normally open switch that closes when the plunger is depressed by the diff lock mechanism, providing a ground path and turning on the light. Maybe you got the wrong switch and it is a normally closed type. What part number did you use?
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  #4  
Old October 11th, 2006, 02:14 PM
MonLand
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Loic Fabro
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Quote:
Originally Posted by Roadsiderob
I don't think you can incorrectly install the switch. It is a normally open switch that closes when the plunger is depressed by the diff lock mechanism, providing a ground path and turning on the light. Maybe you got the wrong switch and it is a normally closed type. What part number did you use?
Hum..... Not sure what part number I used, I used the one Atlantic British sent me without really checking.
It's probably (AB Part Number?) PRC2911. The only one I can see on their web site (http://www.roverparts.com/Parts/PRC2911.cfm).
The strange thing is that it is open by default (and I am pretty sure the one I removed was also normally open).

Follow-up Post:

Now.... If I can't install the switch incorrectly.... What did I mess up! :-(
I'll have to try to lift a tire and see if the diff actually locks. I hope it still does.... Pulling the T-case wasn't exactly the easiest.
__________________
Quote:
I have an ex MoD and an ex wife. The two no longer conflict with each other.
Quote:
it is not hoarding it is selective collecting
---
MonLand
1995 D90 NAS
1996 Discovery NAS
2006 LR3 NAS (hers, but comfy! :) )
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  #5  
Old December 5th, 2006, 12:33 AM
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nosivad_bor
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Rob Davison
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any resolution to this problem?

-rob
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  #6  
Old December 5th, 2006, 12:31 PM
MonLand
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Loic Fabro
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Nope, the light is still on..... I just need to take the time.... :-(
My last guess is that I screwed the bolt too far. What I did discover though, is that eventhough the light is on (or off), the diff does not lock. So I think the screw is too far and prevents the locking mechanism (spring loaded) to actually actuate the locker.
__________________
Quote:
I have an ex MoD and an ex wife. The two no longer conflict with each other.
Quote:
it is not hoarding it is selective collecting
---
MonLand
1995 D90 NAS
1996 Discovery NAS
2006 LR3 NAS (hers, but comfy! :) )
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