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Gwynne_90

Member Since: 29 Nov 2013
Location: Southampton
Posts: 15

Locking the Diff on a Defender 90

Hi. I've just bought my first Defender - a 2007 Tdci hard top.

As you'll see from an earlier post I'm struggling to figure out some of the basics..... Sorry.

I'm struggling to lock the diff (Hi Lo is fine). There seems to be almost no movement if I go Right to left (or vice versa) when in either hi or lo ratio - but much more lateral movement if I move it across from neutral - Is this normal?

Any suggestions...What's the best technique to lock and unlock the diff ? should it be as stiff laterally?

I'm probably being an idiot (excuse is I'm a novice) Any advice most welcome.

Thanks.

30th Nov 2013 7:07pm

dondiddy

Member Since: 13 Nov 2012
Location: Hamilton
Posts: 224

Hi there, The difflock mechanism can seize up if it has little use so don`t worry about it. If you keep working the lever side to side(gently) it should free off eventually and engage/disengage as it should. If its really stubborn you may have to peel back the gearlever rubber gaiter which should let you see into the top of the linkage. From there you can spray some releasing fluid like WD40 or similar to help free it off, working the lever side to side as you spray.Once its working its a good idea to keep things free and working to move the lever into low/difflock once in a while to stop things seizing up through lack of use.Hope this helps!

30th Nov 2013 7:19pm

Norm4n

Member Since: 31 Aug 2012
Location: Surrey
Posts: 329

Sometimes mine takes about 5 seconds before the light comes on

30th Nov 2013 7:56pm

JWL

Member Since: 26 Oct 2011
Location: Hereford
Posts: 3443

Just be aware that even though you've pushed the lever across doesn't mean that it will mesh into diff-lock untill the gears are in line mhch as it will stay in lock when you pull the lever back untill the load is off the relevant gears allowing disengagement that's why it sometimes helps to reverse for a short distance perhaps going from lock to lock to help taking the load off the drivetrain.

30th Nov 2013 8:17pm

Gwynne_90

Member Since: 29 Nov 2013
Location: Southampton
Posts: 15

Thanks everyone. How much lateral movement should there be at the top of the transfer box gear stick _ I'm getting about 25mm?

30th Nov 2013 11:13pm

JWL

Member Since: 26 Oct 2011
Location: Hereford
Posts: 3443

It can vary between vehicles, the best thing for you to do is to get yourself on a patch of ground where you can actually find a feel for what your vehicle does. When the difflock lever is pushed across and it does not mesh into gear the movement of the lever may be minimal but if you keep a light pressure on the lever whilst driving you may find a further movement as the gears mesh. Just think of when you have the clutch depressed and go to engage first gear, you may find some resistance then the gearstick "slots" into place, though this is made easier on the main gearbox due to having synchromesh.
You just need to have a play around with your motor to see what's what. Perhaps a day or half day at an off-road site or you may be able to hook up with someone local to you to give you some pointers on how things work.

30th Nov 2013 11:27pm

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