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Old 08-17-2011, 01:44 AM   #1 (permalink)
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Default How to test if 4WD works??

Hi all.

I am looking for a safe way to test if my 4WD is working or not.

I am getting All terrain tyres fitted tomorrow and itll be a waste if I cant use the 4WD. Last time I took my car away I wasnt sure if the 4WD was working (This could be because I had road tyres fitted and it was EXTREMELY wet and muddy around).

Could the 4WD work to less potential if something is wrong or will it either WORK or NOT WORK??

Any help would be appreciated as I want to test the 4WD.

Cheers
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Old 08-17-2011, 01:52 AM   #2 (permalink)
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By the way, it shifts into 4H and 4L fine and the lights DO come on saying 4WD on the dash.
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Old 08-17-2011, 03:10 AM   #3 (permalink)
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Sure you can test 4wd - this isn't fool proof but almost;
Park your suzi somewhere flat, lock the front hubs (remember to roll the car forwards or back a little and wait for the click), put the selector in 4H, PULL THE HANDBRAKE ( if that is at all sketchy -block the wheels and do it well.), then crawl under it.
Be cautious of the exhaust bits!
Okay so what you want to do is grab a hold of the drive shafts and try to turn them. If all is right then they will only turn about 5 degrees total. Assuming that you drove it there then i'd think 2wd works, but you should also test 4L and N the same way. If all was good then your drive shafts and transfer case work.
Now with the transfer case in N, jack up the front two wheels (still locked) and turn one. if the other wheel turns at the same time then the front axel works also.
Lower the car. leave the front locked and put it in 4h. Drive it. Try to avoid sharp turns. Does it make any odd noises? If not your probably golden and all is in fit shape.
Have fun and remember that it will drive differently with AT tyres on it. If they are bigger then your speedo will be off a little, and the suzi may feel slower.
ENJOY IT!
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Old 08-17-2011, 03:15 AM   #4 (permalink)
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Thanks for the quick reply.

I will do all of those tests first thing in the morning (when i can see!).

I have drivin slow on pavement before in 4WD and there has been no noises. I assume all is well although am keen to test.

Thanks again for the post and will update tomorrow how I went.

J
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Old 08-17-2011, 12:35 PM   #5 (permalink)
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An easy way of checking is this;

Park on gravel and lock the hubs. Put the transfer case in 4H, turn the steering wheel completely to one side and ease out on the clutch just enough to make the Samurai try to move then let off. If the 4WD system is working, it won't want to move and will stop almost like you have the brakes on. Put it in 4L and repeat. If it moves easily, like it does in 2H, then there is a problem somewhere or you are on VERY loose gravel.

You can also do this on pavement, but it is very important to not force the Samurai to move, because that can cause damage and lock up the transfer case making it very hard to put it back in 2WD.

Keep in mind that transfer case "N" locks the driveshafts together, same as in 4H and 4L, unless your transfer case is modified.
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Last edited by VaderSS; 08-17-2011 at 12:43 PM.
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Old 08-17-2011, 05:43 PM   #6 (permalink)
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Cheers VaderSS.

Now to think where I can find a gravel patch in this urban environment!

Im about to head out and try both methods before heading down to the tyre fitter. I asked him if he can put it up on the hoist and test it also.

Thanks for the help gents, I really appreciate it.

Lets just hope there are no problems now!

J
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Old 08-17-2011, 09:38 PM   #7 (permalink)
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So I attempted the tests and i had no positive results

My front wheels are refusing to spin. I am assuming and hoping my hub locks have siezed and I havent broken an axle or diff. The car is being looked at by my trusty mechanic and should soon know the problem.

One problem after another!

Thanks again guys
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Old 08-18-2011, 03:12 AM   #8 (permalink)
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Default Fixed!!

So it seems my 20 year old hub locks had seized and rusted up on the inside. I installed new ones and along with my new A/Ts, the grassy/gravely surface stood no chance!!

Cheers guys.

I am now a happy camper.
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