Vehicle & Technical > Defender

Diff Lock Light

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TechnoTurkey:
Hi,

My diff lock light doesnt come on when it should, I have checked the bulb and it looks fine.

What process should I follow to trouble shoot this and how can I tell if the diff lock is actually engaging?

Thanks

Porny:
Bridge the two wires (that go to the difflock switch) with a short length of wire.... and the difflock bulb should illuminate - thus you can check the bulb and wiring are ok.

Next, to check whether difflock is engaging....

WARNING - THIS IS DONE AT YOUR OWN RISK!!

Jack one of the front wheels up - ideally you need a good trolley jack to do this!! (place in the same direction as the LR)

Put the car in gear (difflock out) - and gently lift the clutch up - covering the foot brake at the same time (hand brake off)

With the difflock disengaged, the the front wheel (that is in the air) should start to turn - but the car itself will not move - as the transmission (in simple terms) is taking the path of least resistance.

If then engage the difflock and do the same test again (i.e covering the foot brake, and slowly let the clutch up) the car should try to move.. as with difflock engaged drive is evenly split between front and wheel axles - and thus will try and drive the back axle too.


Ian

bigfatsi:
I just sling it in diff lock and drive in a circle. You'll sharp tell as the tyres scrub and it has more resistance.

If it isn't engaging (mine didn't) it could be seized up from lack of use or just need adjusting. Both are quite easy to fix.

But check the bulb first!

Simon.

SteveG:

--- Quote from: "bigfatsi" ---I just sling it in diff lock and drive in a circle. You'll sharp tell as the tyres scrub and it has more resistance.

If it isn't engaging (mine didn't) it could be seized up from lack of use or just need adjusting. Both are quite easy to fix.

But check the bulb first!

Simon.
--- End quote ---


 :?:  :?:  :?:  :?:

we are talking about a centre diff lock here, aren't we?

Steve

TechnoTurkey:
Yep, centre diff lock......

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