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Centre diff lock fault not working **now fixed !!**

Mikeharris1992

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so other two sensors or switches I guess that sit in the low range or maybe neutral position? They don't work either.

So I bypassed them with paper clips

I did have for a few mins clicking from a relay down in the nsf footwell when centre diff lock was engaged, but then it stopped. Re check fuses as I thought maybe I popped one but there ok.

I have a 12v feed to the motor

Still no difflock lights or noises.
 

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Mikeharris1992

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So left to right

Continuity to Earth yes

Nothing at all no power or earth nothing

12v

Continuity to Earth

Continuity to earth
 

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Mikeharris1992

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Got the motor out
 

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Mikeharris1992

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Took it apart

Is there a way of powering it up?
 

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Mikeharris1992

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shoukd the motor turn?

This feels like a spring is stopping me once back together and cleaned best I can
 

Mikeharris1992

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Ran out of time so put it back together

The one wheel drive landcruiser will have to stay like this until I can get more info.
 
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Mikeharris1992

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So, no blown fuses.

1 out of three switches work, even the one that does work I don't think works properly as serious force has to be applied to work.

With the plugs fooled with a paper clip pushing the switch in the cabin makes a relay click, intermitent though, it's now stopped completely.

With plugs fooled, have power to motor, took motor apart checked feeds in across and round to motor, for breaks they are ok, cleaned up best I could, still doesn't work, when activated with power probe blow fuses in probe.

Motor doesn't turn, not sure if it's supposed to by hand.

Even with switches fooled at no point has the centre diff lock light come up in the dash, or any low range lights either.

I'm now pretty sure it's not really going to be fixable with what I have.
 

Mikeharris1992

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So I've been thinking, a mate of mine used a cruiser box in his suzuki to make twin transfer boxes. To get around the centre diff lock on a lj70 box which is vacuum operated I suggested a manual conversion.

I'm thinking of doing similar on my amazon.

I think would need to be able to turn it through about 280 degrees I think, as that's how far the stop is inside the motor.

Can you guys see any reason why this wouldn't work?
 

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Iwan

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The lj doesn't have a cdl. It's for the H2 to H4 operation... It's a different design of transfer compared to the 80 and 100 transfer.

There is a way to operate the diff locks on the front/rear on an 80 where the electronic actuator is replaced with an air operated cylinder that is run from a vacume solenoid.
 

Mikeharris1992

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Sorry I miserote what I meant but you can see my idea

Yes my freind Jerry did this many years ago with hilux lockers too.

I'm now thinking of moving the gear to the locked position on the cdl and fitting free wheeling Hubs in the front.

I'm going to convert the rear locker to cable I think.
 

Mikeharris1992

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Does anyone know what if any position the transfer box Switches need to be in for the rear diff lock to enagage, or is it completely sepearte to the centre? Surely the centre has to be locked for rear to work?
 

Jon Wildsmith

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Yes, the centre one has to be locked for the rear to be activated, so the switch on the transfer that detects CDL needs to make the circuit.

It's usually a reliable system that works well, so if you fix it, it should stay working, well. If you convert to cable / free wheeling hubs etc I think you'll spend more time and money than if you just fix the problem with the standard system and it'll quite possibly be less reliable, just simpler.
 

Mikeharris1992

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Motor is knackered and all all three switches don't work, Hubs are £80 online, I can't have a 1wd cruiser it's useless.

I completely agree with you but doesn't work on a truck like mine that's got lots wrong with it that's used and abused, 318k beaten old cruiser. Bits will be at least a couple of hundred quid, needs a nsf drive flange anyway as it's work out, so it makes sense to me.
 

Mikeharris1992

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Ordered some free wheeling Hubs today I will lock the transfer box and fit the Hubs and see what it goes like.
 

Mikeharris1992

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So hubs went on, removed seized centre diff lock motor manually put it in diff lock down in the tbox by winding the gear round, put the seized motor back in

Front Hubs in free position.

Drives really nice, steering is light and a lot less transmission slack / slop, take up of drive is really nice.

I'm very pleased !

I know have a landcruiser I can get front and rear drive at the same time !
 

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Aussie Doug

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Hi Mike,

I posted this today.

Hi Cruiser Folks,

I have enjoyed reading all the posts over the last few months, as just purchased recently 98 HZJ 105R Auto.
vehicle pretty stock except for Safari turbo & inter-cooler on the 1HZ, and a Ironman front bar !

Now begins the journey building tourer with 19 year old son, with hopefully a 60 series to follow or another 100 series !

I have read many threads with diff lock issues from 80 to 100 series, they all have slightly different scenarios !

Hopefully someone can shed some light here.

Firstly when the ignition is switched on there is no centre diff lock light to see, or when the car is started and the switch on the dash is pressed, still no light or sign of activation ?
vehicle drives fine with no shudder if locked on ? furthermore i have pulled apart the glove-box area to try and locate the centre diff lock relay, do you think i could find it :grimacing:
however when I select low range i can here the relay clicking in glove-box area ! but no light on dash ? can the relay still be partially faulty ?

Next i have removed the transfer indicator switch from top of centre diff, from another (post) i tried tapping it gently running some voltage through via battery and multi meter, and cleaned with lectra fluid, when transfer switch pushed in it appears to have continuity with meter, but maybe flaky ?

Going back should the dash light come on anyway even if relay, dash switch & transfer switch are faulty ?

I haven't jacked up car to check actuator operation or pulled out dash switch and check with multi meter.

Hopefully some of you good folk can assist here.

Doug
 
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