Thread: Diff Lock?

The only way is to check what is there.

Get underneath and feel above the front propshafts
output casing you should feel a triangle of bolt heads
with a shaft that has two flats with a thread on top.
That is the shaft for diff lock if you have it it can be
engaged with a 10mm spanner

Officially, you don't have a centre diff lock.


Unofficially, you do because Land Rover left the diff lock guts inside the transfer case & left off the activating linkage/cable.


They left the innards out from around early/mid 2000 & put them back in again with the 2003 model year.


A search in the Good Oil should bring up some options on how to effectively use yours.

Originally Posted by david7307

just been looking at some videos of discoveries ,and the mention Dif locks on the td5 mine only has a high and low box , has some nasty person pinched the diff lock or does not need one
thanks
TDI5 1999 manual

Agree with ScotsD2, however, a 1999 D2 should have the internals fitted to the transfer case. You have to decide which system you want, to transfer the operation to the cabin. This can be as simple as a socket, & extended handle, shoved thru a hole in the console, or a more complicated set up, thru levers & whatever, purchased at a price from those who sell them. Doesn't matter. both work, depends on whether you are concerned about the look.


Now I opted for a separate lever, from the LR/HR lever. FWIW, the instructions that came with this were;


"The centre diff lock is operated by the right hand lever, [ next to hi/low lever] forward, when the diff lock light on the dash illuminates the diff lock is engaged, this lever can be operated either when the vehicle is stationary or in motion, [ I would not engage in motion, just me] When it is engaged as above the traction control is still functional. If the engine is switched off and restarted while the diff lock is engaged the traction control will no longer operate.


When the diff lock is no longer required pull the right hand lever rearward again and when the diff lock light goes out, the diff lock has disengaged . Please note , if the ABS /traction control has been disabled while in diff lock the engine will need to be switched off and restarted to enable normal ABS operation. Works for me.


PLEASE NOTE_ the centre diff lock is never to be operated when driving on a solid surface as drive train windup will occur and possible damage to the drive train could result . Do not engage the diff lock when wheels are spinning. "


Any method of getting operation to the cabin, is better than getting under the vehicle. Bob

True that Bob but the OP should be aware that if choses the same system you and I have , about the difficulty in accessing the sump plug for the gearbox.

Land Rover left the diff lock guts inside the transfer case & left off the activating linkage/cable.
Why was there a reason for doing this/
Sounds bloody silly to not have Diff lock on a Discovery

Originally Posted by trog

True that Bob but the OP should be aware that if choses the same system you and I have , about the difficulty in accessing the sump plug for the gearbox.

True mate. thanks for that. Bob

Diff lock is activated by pushing hr/lr lever to the left? The hr/lr lever has a knob that indicates Diff lock is installed but lever will not move to the left. Any ideas?

Originally Posted by david7307

Land Rover left the diff lock guts inside the transfer case & left off the activating linkage/cable.
Why was there a reason for doing this/
Sounds bloody silly to not have Diff lock on a Discovery

Traction control was meant to take the place of the centre diff lock. Thankfully LR realised T.C.+ centre diff lock was the way to go. Bob