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No 4x4?

General Tech Talk

Moderators: toaddog, TWISTY, V8Patrol, Moderators

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No 4x4?

Post by Maddog »

My 85 Hilux wont b a 4x4.

Hubs unlocked and 4x4 engaged, front shaft turns.
Hubs locked and 4x4 disengaged, front shaft wont spin.

So I am guessing there is something wrong with the hubs.....I havn't heard or done anything for an axle to snap or a CV......

Any clues?
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Post by dumbdunce »

the locking hubs rely on a spring to push the clutch across, so if your hubs are full of mud etc then even if the switch turns easily they may not be locking. undo the 6 little bolts and have a look inside. chekc both sides, it might be on ly one of them that is stuck.
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Post by 4wdtoy »

if its locked in low or high 4 and the front shaft is still spinning there is something wrong in your transfer case. does it select low range?

If the front shaft doesn't spin with the hubs locked in it means they (the front locking hubs) are working ok
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Post by dumbdunce »

4wdtoy wrote:if its locked in low or high 4 and the front shaft is still spinning there is something wrong in your transfer case. does it select low range?

If the front shaft doesn't spin with the hubs locked in it means they (the front locking hubs) are working ok


eh?

I think we need clarification on what he means by 'spins' - ie does it mean 'can turn it by hand' or does it mean 'turns when you drive the vehicle'.

you assumed the former and I the latter, and obviously the diagnosis relies on the definition
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Post by Maddog »

Sorry, yes the shaft turns when in 4x4/unlocked hubs when driving....and does not turn when in 2x4/hubs locked.

If one hub works and the other doesn't, wouldnt the front shaft turn if the good one was locked? It seems unusual that they would both be faulty at the same time when one week earlier they were working.
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Post by 4sum4 »

so you didn`t here any clicks or a big bang if not one of the hubs arn`t locking in
[url=http://downunder4x4.net/forum/showthread.php?t=1650]86 Hilux[/url]
and a 84 extra cab



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Post by dumbdunce »

Maddog wrote:Sorry, yes the shaft turns when in 4x4/unlocked hubs when driving....and does not turn when in 2x4/hubs locked.


cool that's what I thought.

If one hub works and the other doesn't, wouldnt the front shaft turn if the good one was locked? It seems unusual that they would both be faulty at the same time when one week earlier they were working.


no, because the one hub that is working will spin that axle, which will in turn spin the axle on the other side backwards inside the housing instead of turning the drive shaft. it doesn't take much grit or muck to stop a locking hub from working and they don't seal real well.
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Post by Maddog »

Thanks Dumbdance, I shall rip them apart tomorow and have a look.
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Post by glen1n »

Maddog wrote:Thanks Dumbdance, I shall rip them apart tomorow and have a look.


:lol:
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Post by dumbdunce »

glen1n wrote:
Maddog wrote:Thanks Dumbdance, I shall rip them apart tomorow and have a look.


:lol:


grins. I'm getting used to it.
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