Rear Diff lock

[razor]

How does the rear diff lock work?
My rear diff lock hasn't been actually locking up as it should since just after I got it. I was under the car and hit the switch to turn it on, the compressor starts up and just constantly runs.
If I pinch the hose to imitate pressure in the compressor line it shuts off.
If I pinch the breather hose and hold it for a few seconds then release I can hear air pressure being released.

I'm assuming something is leaking internally but figured I would ask before taking the diff out

Thanks, Grant

[craka]

Is it a factory diff lock?


If so you need to be in Neutral and in low gear before selecting it.

Edit: Might have misintepreted what you were asking, I'm unsure of the mechanics of it sorry.

[bhjm]

Is it a factory diff lock?


If so you need to be in Neutral and in low gear before selecting it.

Edit: Might have misintepreted what you were asking, I'm unsure of the mechanics of it sorry.

adding: R-DL works in LLC AND HLC

[Ian Sharpe]

there is a diaphram inside the diff, they do fail, it may be that. Unfortunately the diff will have to come out so the fault can be diagnosed.

[erad]

I have a factory rear diff lock, but don't know the finer details of it. If there is an external hose ocnnecting the compressor to the diaphragm, surely it could be disconnected and a compressor or vacuum pump attached to see if the diaphragm has failed?

[Ian Sharpe]

I have a factory rear diff lock, but don't know the finer details of it. If there is an external hose ocnnecting the compressor to the diaphragm, surely it could be disconnected and a compressor or vacuum pump attached to see if the diaphragm has failed?

from his post he has proved that the leak is from within the diff, from my recollection of the internals of the factory locker, the diaphram is the most likely culprit, however it also might be that the line has come off somewhere inside the diff as well, either way the diff has to come out, theres no other way to actually see whats wrong, let alone fix it. If he doesnt want to do that then he loses the use of the locker.

From memory too, Gen 2 diaphrams were no longer available as a spare part (weird) not sure about Gen 3/4 but one might have thought that it was the same part but who knows.

[razor]

Yes it's the factory rear diff lock that's playing up