jamesmartin
Well-Known Member
yes before 3a diff lock was only used for testing purposes in which involved removing 1 prop, so t/c couldnt be functioning as it would apply brakes to turning wheels,
50 pence
New Member
Gotha !.
Having now got my ducks in a row it makes sense.
The TC is dissabled on cdl activation on pre 3A cars with ABS and HDC working at reduced parameters. I belive that when the cdl is engaged on vehicle start up, the ABS, TC and HDC lights illuminate purely to alert the driver, ( or Landrover technician who may have been wor workingking on the drivetrain ), that the cdl is still locked.
On pre 3A cars cutting the wire to the SLABS unit stops it recieving the cdl locked signal from the switch on the transfer box.
Thinking logically about this, there could be the potential for trouble if say a pre 3A car with the cdl signal to the SLABS unit cut, with the cdl engaged with front proshaft removed, ( perhaps due to a blow diff ), and then the traction control tries to work in the event of wheelspin.
The TC will want to apply the brakes to what it thinks is the rear wheels spinning but this will then be working directly against drive due to the centre diff being locked.
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jamesmartin
Well-Known Member
yes especially if vehicles on a 2 wheel brake roller
50 pence
New Member
If the cdl was engaged in such an instant I pressume it would wind up the transmission, try and jump out the rollers and probably blow a diff.
I have fitted quite a few cdl transfer boxes and suggest that the owner fit a post 3A SLABS unit. It is intriguing to know what controll the later SLABS unit has over the TC with the cdl engaged.
jamesmartin
Well-Known Member
not with 1 prop off
danny dorito
Active Member
Now you guys have taught me something today, I thought all disco 2's were able to throw the 3 amigos warning light problem of death and financial ruin. Clearly not though.
