Diff Lock

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You're right that they are smaller wheels, I'm on on 15" while you have 16s at least. Unsure how much of an advantage that would make. Ground clearance is also lower than many of the discos I've seen, and certainly much lower than defenders etc.

It's been fun folks. Seems like my family are no longer welcome here and we don't want to spoil taffy playtime. Thanks to all the great advice and information you've provided, its a shame a few of the members are so narrow minded.
 
It's been fun folks. Seems like my family are no longer welcome here and we don't want to spoil taffy playtime. Thanks to all the great advice and information you've provided, its a shame a few of the members are so narrow minded.
Grow up man. Think about it. You come on here banging on about your shogun all the time. You even start a debate as to whether your shogun is better than a Land Rover. You also freely admit you have little or no experience of off road driving. It's a Land Rover forum. Did it not occur to you that some negative comments might ensue? You've had an easy time of it tbh.
 
You're right that they are smaller wheels, I'm on on 15" while you have 16s at least. Unsure how much of an advantage that would make. Ground clearance is also lower than many of the discos I've seen, and certainly mucFFh lower than defenders etc.

It's been fun folks. Seems like my family are no longer welcome here and we don't want to spoil taffy playtime. Thanks to all the great advice and information you've provided, its a shame a few of the members are so narrow minded.

FFS!!! GROW UP MAN.:rolleyes:

 
Wot a fooken porker!!
We shud all go an cry now coz he int commin bak and now we gotta fight amongst ourselves again.....
 
Grow up man. Think about it. You come on here banging on about your shogun all the time. You even start a debate as to whether your shogun is better than a Land Rover. You also freely admit you have little or no experience of off road driving. It's a Land Rover forum. Did it not occur to you that some negative comments might ensue? You've had an easy time of it tbh.


Laughs....oh no not again! This reminds me of the message boards at my last ISP....leaving not leaving leaving not leaving, my dad's bigger than yours, all the toys over the floor etc etc. Hmmm, home sweet home!
Which brings me to a timely reminder. I recently put a pic up in my sig of my Moto Guzzi "Guzmode", it was my own design, my own artwork and so basically my image, however, it appears to have gone astray recently so I can't help wondering now, could it have been reported by a full on Landy owner that won't tolerate anything other than images of LRs? C'mon, someone tell me it ain't necessarily so and that it just fell of the edge of the page? Grins.
 
Laughs....oh no not again! This reminds me of the message boards at my last ISP....leaving not leaving leaving not leaving, my dad's bigger than yours, all the toys over the floor etc etc. Hmmm, home sweet home!
Which brings me to a timely reminder. I recently put a pic up in my sig of my Moto Guzzi "Guzmode", it was my own design, my own artwork and so basically my image, however, it appears to have gone astray recently so I can't help wondering now, could it have been reported by a full on Landy owner that won't tolerate anything other than images of LRs? C'mon, someone tell me it ain't necessarily so and that it just fell of the edge of the page? Grins.



Damn nabbit shmuck 'n' schnorbits...didn't you just know it would reappear!
 
The diff lock (as used in coil sprung Land Rovers ) functions as follows. This unit is a center diff lock, which means that it operates BETWEEN axles.
A permanent 4x4 vehicle (Coil sprung Land Rover i.e. Defender Rover/RR) supplies driving torque to both axles equally in hard surfaces. Due to the differing route followed by the front and rear axles during a corner, the system uses a center differential. This center diff prevents "wind-up" on hard surfaces i.e. it lets the axles turn at differing speeds.
When you get into a situation where less traction is available or one wheel (any wheel) is in the air the vehicle will loose traction entirely and stop moving. All power is "escaping" from the airborne wheel, this is the center diff doing it's job as per normal operation.
In order to get past this, a center diff lock has been designed in to the diff: When the center
diff is locked the diff effectively no longer exists i.e. the front and rear axles are locked together and driving power is now sent equally and unconditionally to BOTH axles.
The net effect of the center diff being locked is that power is available to both axles and as such, at least one wheel on each axle must spin for the vehicle to loose traction.

Vehicles with selectable 2x4 and 4x4 like Leaf sprung Land Rovers, do not have a center diff lock because the do not have a center diff at all. When the vehicle is in 2wd only the rear axle is driven while the front is disabled. When 4wd is engaged, the front and rear axles are locked together and power is again sent equally and unconditionally to both axles, therefore you can see that a Defender or Range Rover with center diff locked is identical to a Leaf Sprung Land Rover on 4wd.
So, where do I lock the center diff and where do I unlock it ?
If you are going off tar where there is a possibility of loosing traction, engage the center diff lock. i.e. Up and down hills, mud, ice, snow, uneven surfaces.
Do not use any diff lock on tarred / concrete surfaces or any similar high traction surface, the difference in front to rear axle speeds will cause extreme torque build-up in the transmission to such an extent that transmission components will wear excessively and/or snap. This build-up is called "wind-up", Even a little hard surface driving in diff lock will cause the diff lock to not dis-engage due to transmission tension





Could someone please clarify the operation of the Diff Lock on my 2004 Discovery please. Is it a true diff lock similar to the after market air operated diff locks that give you 100% traction to all wheels when engaged.

I understand the basic operation of the transfer lever from high range to low range for better traction but what then does the diff lock do different to low range. Does this mean that in normal low range you do not have good traction compared to diff lock.

The manual does not clarify this very well.

regards Martin
 
Very good explanation but i need a bit more clarity if you don't mind. I have a 1994 Disco 1, 5 door and i've not used the diff lock yet. Does the car have to be stationery when its being fiddled about with, engine on or off, and i still don't understand the position of the stick even with the sticker there. New to the 4x4 thing.
Thanks, Phil
 
diff lock can be engaged in hi or low just by pushing lever across it can be applied when mioving as long as wheels arent spinning and can be unlocked while moving too ,but if theres any wind up in system in may not come out straight away and can need vehicle to reverse in odd cases,its just a collar that physically locks front ouptput shaft to center diff ,selector for collar is pushed by lever compressing a spring so you can push lever across to select lock but it will only let spring push selector in/out when aligned so selection may not be as when lever is pushed ,lever often seizes were cross shaft passes through aliminum cap on passenger side of lever housing ,adjustment can be made by unclipping linkage from pivot eye bolt and screwing eye bolt in out to suit ,or gaiter can be removed from housing and gate plate removed or filed out
 
Very good explanation but i need a bit more clarity if you don't mind. I have a 1994 Disco 1, 5 door and i've not used the diff lock yet. Does the car have to be stationery when its being fiddled about with, engine on or off, and i still don't understand the position of the stick even with the sticker there. New to the 4x4 thing.
Thanks, Phil
h=nomal driving, n=netral same as any netral not going any where, low is for offroading or towing really heavy ****, like a house.
 
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