Diffs dont lock on my Defender 90

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prodigy

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I'm not sure when they stopped locking but it seems they certainly dont lock any more as I thought they were locked and had 2 wheels spinning in the mud. Also the light no longer comes on but I'm not sure if it ever did. High/low range works fine and the lever moves to the lock position with no problems, just seems the diffs dont actually lock.

Any suggestions of possible cause and solution would be much appreciated. Thanks
 
I'm not sure I follow, are you telling me that it's normal with diff lock egaged that I'm only guaranteed 2 wheel drive? That doesnt make much sense to me.
 
Thank you for your clarification on this matter! I feel enlightened! I need to get me some better tyres to keep traction!

Cheers
 
prodigy said:
Thank you for your clarification on this matter! I feel enlightened! I need to get me some better tyres to keep traction!

Cheers
Click to expand...
Good tyres good driving and good lines will help.But axle lockers will help too but they are dear n for really tricked out motas.
 
I only have AT's at the moment so thinking next time I'll go for full mud terrains to get the most out of it.

Thanks for your help.
 
with diff lock engaged, if one wheel on each axle spins in mud (or in thin air) the ABS will stop any drive being sent to the wheels that still have traction because the ABS sees this situation as a potential skid!

I hope I am right with the above explanation and would welcome confirmation. I believe there is a "trick" to help if stuck which involves left foot braking to confuse the ABS and therefore it continues to send drive to all 4 wheels. Again, confirmation or clarification from an expert would be welcomed.
 
The left foot braking is a technique that can be applied to any open diffed vehicle, it works on two wheel drive too ..

It's a well known technique and used a lot in trials etc. Works exactly as you say and on non-ABS vehicles works in a similar fashion ... the spinning wheel obviously has no traction, so when left foot braking (whilst keeping power on!!) this wheel gets stopped quickly by the brake, but the wheel with traction then gets some power, 'diverted' by the open diff, to get the plot moving along. If you can cadence brake left-footed you're a driving god ... but it's hard 'cos (on manuals at least) you're used to putting the left foot down sharply for the clutch, when some finesse is really needed.

Something worth practising when you're at a Pay 'n Play site .. ;)
 
Paul D said:
The left foot braking is a technique that can be applied to any open diffed vehicle, it works on two wheel drive too ..

It's a well known technique and used a lot in trials etc. Works exactly as you say and on non-ABS vehicles works in a similar fashion ... the spinning wheel obviously has no traction, so when left foot braking (whilst keeping power on!!) this wheel gets stopped quickly by the brake, but the wheel with traction then gets some power, 'diverted' by the open diff, to get the plot moving along. If you can cadence brake left-footed you're a driving god ... but it's hard 'cos (on manuals at least) you're used to putting the left foot down sharply for the clutch, when some finesse is really needed.

Something worth practising when you're at a Pay 'n Play site .. ;)
Click to expand...
tried it a couple of times, didnt work for me.?I int a driving god, just a sex god.:cool:
 
ABS, what's that? I've got an 1988 chassis with 1999 axles and gearbox with a 1994 200tdi from a disco. None of the donor vehicles had anything so modern! lol :eek:
 
Cadence braking imitates ABS by your foot (you!) pulsing the brake pedal on and off quickly so the brakes are full on then off then back on rapidly. It helps distribute power to a wheel that's stopped due to traction when another wheel on the same axle is spinning due to lack of traction. Brake as hard as possible and let off before skidding, let the wheels turn then hard on the brakes again and repeat as necessary, basically!!

It used to be used in emergency stop situations on the road before ABS came in, which at the time imitated cadence braking in a much faster and more uniform manner. Not used or mentioned much nowadays, if at all.
 
Lol 600 quid per axle if or you can learn to left foot brake. I found its easier on the ears (from the Mrs when she sees you spent 1200 quid on lockers)!
 
mrdsgs said:
with diff lock engaged, if one wheel on each axle spins in mud (or in thin air) the ABS will stop any drive being sent to the wheels that still have traction because the ABS sees this situation as a potential skid!

I hope I am right with the above explanation and would welcome confirmation. I believe there is a "trick" to help if stuck which involves left foot braking to confuse the ABS and therefore it continues to send drive to all 4 wheels. Again, confirmation or clarification from an expert would be welcomed.
Click to expand...

If you have ABS on a Defender you'll have Traction Control, left foot braking will just confuse it!

I don't understand the first paragraph, I'm tempted to say you are talking rubbish.
 
If you have not got TC then you can use left foot braking especially with ABS fitted as an aid. Doesn't work so well when you are stuck but as you are slowing down and about to get stuck its really handy. It does work and LR mechanics and driving techs did use it on RR classics when being taught to drive the vehicles at events to prove their offroad creditability.
 
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