How to tell if diff is gone??

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ferris
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How to tell if diff is gone??

Post by ferris » Wed Nov 03, 2010 5:26 pm

Iv got a funny feeling my rear diff is dying. Iv not had any dealings with it before, so im not sure. There is quite a loud klunck coming from the rear when i pull away, and when i change gear, and when i accelerate sharply. Also there is a continuous vauge knocking also coming from the back, that i thought was the exhaust moving about but now i think may be something more sinister.

Any help would be most appreciated :mrgreen:
86 SJ413 tin top, 1.6 8v, SU carb, YJ spring conversion, virtual lift, 33x12.5x15 KL71's, rocklobster, rear discs, power steering.

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Henry
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Re: How to tell if diff is gone??

Post by Henry » Wed Nov 03, 2010 5:57 pm

Sounds like a prop uj.

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Re: How to tell if diff is gone??

Post by ferris » Wed Nov 03, 2010 6:19 pm

Its defo not a uj, i had all the props off last night to make sure. Also checked the rear wheel bearings earlier and they seem fine. There is no vibrations in the cab apart from the initial klunck and jolt when i pull away. :?: :?:
86 SJ413 tin top, 1.6 8v, SU carb, YJ spring conversion, virtual lift, 33x12.5x15 KL71's, rocklobster, rear discs, power steering.

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Re: How to tell if diff is gone??

Post by ScottieJ » Wed Nov 03, 2010 6:46 pm

Check for excessive play in the pinion bearing.
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ferris
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Re: How to tell if diff is gone??

Post by ferris » Wed Nov 03, 2010 7:05 pm

Im not to sure what the pinion bearing is :oops: but there is alot of play on the rear prop (i can turn it about 45degress before the wheels start to turn)
86 SJ413 tin top, 1.6 8v, SU carb, YJ spring conversion, virtual lift, 33x12.5x15 KL71's, rocklobster, rear discs, power steering.

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Henry
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Re: How to tell if diff is gone??

Post by Henry » Wed Nov 03, 2010 7:39 pm

Thats the pinion bearing :cry:

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4eye
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Re: How to tell if diff is gone??

Post by 4eye » Wed Nov 03, 2010 9:00 pm

SNAP!! :P i got the same problem.......so guys.....how much is this gonna cost us? :sad: :roll:
ITS NOT LEAKING OIL...........SHE'S MARKIN HER TERRITORY!!!!!!!!

my ride.........:4eye:

+2 lift....grizzley boots is all i need!

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Re: How to tell if diff is gone??

Post by Henry » Wed Nov 03, 2010 9:46 pm

Not really a home job.

You got to strip diff, remove pinion, get bearing off, press a new one on.

After that you have got to reset the backlash pre load ect in the diff. You can do this "agriculturally" like i have done but mine dosent do many miles.



I would be looking for a new diff, or if you are looking to lower the gearing fitting a set or front vitara ring and pinions.


And bloody hell, i let a rear sj axle go for £50 last weekend and i thought that was good money :lol:

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ferris
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Re: How to tell if diff is gone??

Post by ferris » Wed Nov 03, 2010 11:36 pm

Oh crud! :| Id better get on the look out for a new diff. :roll:

Thanks for your help :mrgreen:
86 SJ413 tin top, 1.6 8v, SU carb, YJ spring conversion, virtual lift, 33x12.5x15 KL71's, rocklobster, rear discs, power steering.

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Re: How to tell if diff is gone??

Post by 4eye » Wed Nov 03, 2010 11:48 pm

:jawdrop: oh my...... :jawdrop:

times are hard at the moment.......so it'll have wait......only just fixed the bearing and can't afford to tax it yet......!(sorry fer the violins :roll: )

at least its not as bad a yrs ferris.....should last a while longer....just will have to take it easy with the old girl(when I'm back on the road)!

poor poorly sjs :injured: :crutches: :nurse:
ITS NOT LEAKING OIL...........SHE'S MARKIN HER TERRITORY!!!!!!!!

my ride.........:4eye:

+2 lift....grizzley boots is all i need!

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