It locks the front shaft to the differential case. This prevents differential action. It is the same way all manual lockers work.
I have been trying to get my head around how the CDL actually works. I know that the dog clutch slides along the shaft and locks the front shaft, but how does it lock the rear shaft. From what I can see, it locks against the diff carrier, which would leave the rear shaft free to rotate. Which it doesn't Any images out there? I've not found any.
Thanks
Julian
D2a Td5 Manual, Chawton White. aka "Daisy"
Build date 11th Oct 2003
Freelander 2 2011, manual, the daughter calls it Perri
Before I had a Land Rover I did not have any torque wrenches. Now I have three.
LROCV #1410
It locks the front shaft to the differential case. This prevents differential action. It is the same way all manual lockers work.
Is not the rear shaft free to move? That's the bit I do not get.
D2a Td5 Manual, Chawton White. aka "Daisy"
Build date 11th Oct 2003
Freelander 2 2011, manual, the daughter calls it Perri
Before I had a Land Rover I did not have any torque wrenches. Now I have three.
LROCV #1410
so.
unlocked the power comes into the diff carrier
the power is then transmitted to the spider gears
the spider gears then apply power to the front and rear (or left and right) side gears which drive the axles (and then the wheels or the next diff)
when we lock the CDL (or any other mechanical locker)
the power comes in on the diff carrier.
the CDL locks the front side gear (or left or right for a normal diff) to the diff carrier.
power is now applied to the diff carrier and then to the front (or left or right) side gear
the front (or left or right) side gear now applies power to the spider gears
the spider gears are more or less fixed to the diff carrier (theres some slop) which is turning at the same speed as the front axle and so they are unable to rotate
the spider gears (once the slop is taken up) now apply power to the rear (or right or left) side gear.
this is about the best single video I could find that provides a clean demo of the power transfer.
YouTube
this one gives a pretty good verbal description of what it does, just not how and covers a couple of other options.
YouTube
Dave
"In a Landrover the other vehicle is your crumple zone."
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Archaeoptersix 1990 6x6 dual cab(This things staying)
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The gist of the CDL is that both propshafts are locked together so they act like one, here's the description from the workshop manual
Differential lock
The differential lock selector housing is bolted to the top of the output housing, the selector finger passes through the
housing, locating in a slot in the differential lock selector shaft. The differential lock selector shaft passes through the
selector fork which is located beneath a plate bolted to the side of the output housing. The selector fork engages the
dog clutch sleeve with the differential rear shaft when the splines of the sleeve and differential rear shaft are aligned.A
spring loaded detent ball fitted in the output housing locates in grooves in the shaft.
Discovery Td5 (2000), manual, tuned
Thanks to all the contributed. It make sense to me know. Took a while
D2a Td5 Manual, Chawton White. aka "Daisy"
Build date 11th Oct 2003
Freelander 2 2011, manual, the daughter calls it Perri
Before I had a Land Rover I did not have any torque wrenches. Now I have three.
LROCV #1410
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