disco 2, diff lock

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deano7 said:
bought me first landrover this week, disco 2, yr 2000, am I right thinking i can't manually engage diff lock?
probably a daft question but its all new to me, cheers.
Click to expand...

Very much doubht you can engage it... but the transfer lever will go over to the left if you can.... But you can allways get underneath it with a 13mm (i think) spanner and switch the CDL on :D
 
I have fitted a manual lever to engage the CDL, but as it is not actuated, I have to lie on the ground and reach into the Transfer Case to engage it. Burnt my blooday arm on the exhaust too dammit. This CDL does not appear to be a true centre locking differential. Living in NZ we smash the Mud Tracks a lot, and the CDL is not as effective as the Traction Control. What I mean by True CDL is, all wheels should move at the same speed regardless of how much traction they have. I can still however be on a major incline and have two wheels spinning and two not doing anything, with TCL though, The Disco climbs really well.
 
Ah... another case of somebody seeing the words 'diff lock' and assuming, granted the D2 doesn't say about it in the manual (I'll stand to be corrected on that though).

CDL, Central Diff Lock. Inside the transfer case there is a diff linking both the front and rear prop shafts, when you engage diff lock it locks the front and read axles together resulting in them turning at the same speed and having 2 wheel drive - 1 wheel on each axle.
Your thinking of aftermarket cross axle lockers which lock the axle so both wheels turn at the same speed and if used in turn with the CDL give you full 4wd, regardless.
With the CDL disengaged and no lockers on the axles it gives it drive to all wheels, when it loses grip it sends all the power to the wheel with the least grip, as that is the function of a diff (allow 1 wheel to go slower than the other - or in the case of CDL the props).
 
deano7 said:
bought me first landrover this week, disco 2, yr 2000, am I right thinking i can't manually engage diff lock?
probably a daft question but its all new to me, cheers.
Click to expand...

The 2000 MY will have the CDL and diff installed, but no means of operating it, as Traction Control was fitted to the vehicle.

You can fit the linkage from a Disco 1 R380/LT230 box to replace the cable and lever you have now, but note that there are issues with switching the lock on, Traction Control will be disabled as soon as the CDL light comes on.

Peter
 
schultzfactor said:
I have fitted a manual lever to engage the CDL, but as it is not actuated, I have to lie on the ground and reach into the Transfer Case to engage it. Burnt my blooday arm on the exhaust too dammit. This CDL does not appear to be a true centre locking differential. Living in NZ we smash the Mud Tracks a lot, and the CDL is not as effective as the Traction Control. What I mean by True CDL is, all wheels should move at the same speed regardless of how much traction they have. I can still however be on a major incline and have two wheels spinning and two not doing anything, with TCL though, The Disco climbs really well.
Click to expand...


You really need to do a "liittle" more reading on how a 4x4 works.

There is not a single vehicle on this planet that has a CDL that locks all 4 wheels.
 
--------------------------------------------------------------------------------

Quote:
Originally Posted by schultzfactor
I have fitted a manual lever to engage the CDL, but as it is not actuated, I have to lie on the ground and reach into the Transfer Case to engage it. Burnt my blooday arm on the exhaust too dammit. This CDL does not appear to be a true centre locking differential. Living in NZ we smash the Mud Tracks a lot, and the CDL is not as effective as the Traction Control. What I mean by True CDL is, all wheels should move at the same speed regardless of how much traction they have. I can still however be on a major incline and have two wheels spinning and two not doing anything, with TCL though, The Disco climbs really well.


You really need to do a "liittle" more reading on how a 4x4 works.

There is not a single vehicle on this planet that has a CDL that locks all 4 wheels.
__________________
www.discovery2.co.uk


Ok I get it now thanks. But I ask then what the purpose of the CDL is? In what instances would it help? Sand?
 
As I said in my previous post, it locks the front and rear propshafts together so that the axles get an equal amount of torque, the front and rear diff then act like normal diffs and allow the wheels to rotate at different speeds.

The manual states (if I remember rightly) that the diff lock is to be engaged on a surface where traction is likely to be lost i.e. mud, sand, rock climbing.
Or somthing along those lines anyway.
 
schultzfactor said:
--------------------------------------------------------------------------------

Quote:


Ok I get it now thanks. But I ask then what the purpose of the CDL is? In what instances would it help? Sand?
Click to expand...
Without centre difflock, one wheel spinning can stop the car. With it, you need to spin two. In practice this makes a vast improvement in off road performance.
 
So you's actually want it to have both CDL and Traction control engaged to effect the best traction? This is a problem, as when I engage the CDL, it automatically disengages the TC.
 
thats because you engage the CDL "then" start the car, start the car "then" engage the CDL and the TC will remain active.All the details are on the webpage here http://www.discovery2.co.uk/diff_lock.html, including cutting the SLABS feed so the car does not care when you start with the CDL in or out etc, the TC is NEVER turned off

Having both the CDL and TC together is the closest you'll get to lockers in you axle diffs without actually having them.
 
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