HI,my question to all expert on G,I have used 4wheel drive quiet often,but there are some things i still don't understand,
I have (2) 4wd road gears and 4wd country gear+2wd road gear,and then 2 i suppose diff lock rods,which you pull out,
first, when i use 4wd all works fine.but when i use 4wd country gear even when the car is in drive it does not engages in any kind of gear,as if its in neutral,
2nd when one should use diff lock or those rods which you pull out, and there exact function. [?]
WOULD MUCH APPRECIATE ADVICE,
As you can see engraved in the handle of the transfer box lever, you have:
S: Strasse: this is 2WD (rear wheel drive)
SA: Strasse All: this is 4wd high gears
SA: Strasse All: this is 4wd high gears. This is exactly same as previous one, only lever is moved to the right.
N: Neutral
GA: Gelände All: this is 4wd low gears.
The diff lock rods have nothing to do with the transfer case.
Note that the pattern is that of an inverted U. By what you say, it looks to me that you are in the SA position to the right and when you move the lever backwards you put it in neutral. To engage GA you need to move it a step further in a decisively manner.
It might be a bit "rusty" for lack of use. It might help if you lift your right foot from the brake and let the transmission move by gravity.
cheers mortin,but i know for sure it goes all the way down[:p] i ment country gear.After neutral,but nothing happens.
well i will try to take my foot off the break.then i'll see what happens.
As you said could be rusty for lack of use.still need to know about diff.rods.when to use? + so many of you guys say,not to use on plain road.what happens if you do?THANKs for pic...regards.
It's fairly simple.
When on dry roads with a solid surface, use S.
If you drive off road in light terrain, or on dirt roads with a uneven surface or in snow use any of the SA's.
You can use GA if you need to go over a steep hill offroad, or if you have to cross a mudhole or a river or have to drive in deep snow. You can also apply the lockers in those situations if you suspect wheel spin.
If you drive it in SA/GA on dry roads you basically lock your drivetrain. The front axle will try to spin at the same speed as the back axle, and when you turn your car like this, it will try to violate a few natural laws. That is not good in the long run because it will put enormous force on your driveshafts etc.
If you drive with lockers on, much of the same will happen, but as both the left and right wheel now will turn at the same rate, you will force your diff and/or CV's into breaking.
Remember that when you apply SA/GA, you lock the front and back drivetrain, and when you apply the lockers you lock left and right side of the axle. Basically, you then get a completely rigid drivetrain. This will work on loose surfaces because the "leftover" force will waste its energy pushing the car about on the surface. On solid road this energy has nowhere to go, and that will most likely find its way to the most expencive parts (murphys law)[;)]
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It sounds very much like something is broken in the transfer case. If this is true, then it's very likely that broken pieces can either clog oil passages, or get caught in gears. Either one will cause more damage in a hurry.
At the very least you should change the oil in the transfer case, and if possible look into the drain hole and see if you can see any fragments of gears or anything.
Another possibility is to remove the cover under the speedometer drive at the rear of the transfer case. Anything being pumped around in the oil will be trapped there and serving to deprive the oil pump of the "life blood" of the transfer case.
If all is found clear in these tests, then at least you can drive it with some confidence that it won't break up suddenly.
You'll need to have the transfer case out to fully diagnose the lack of "GA" engagement though.
And to imagine what is going on in your drive line if you use "SA" or "GA" or the diff locks on solid surfaces (by solid surface I mean one that does not allow wheel slip), all you have to do is pick up a garden hose with your two hands about 6" apart and twist your two hands in opposite directions. If the hose doesn't slip in your hands, it will eventually twist and collapse as more force is applied. The same will happen to your drive line components if the slip is not allowed. And since steel is far less ductile than a ruber garden hose, the steel breaks after only a comparitively very little twisting.
And as another friend said, the "weak link in the chain" that eventually breaks will invariably be the most expensive one. [:(]
The twisting motion of your hands is caused by the fact that whenever you are making any kind of a turn (going other than in a perfectly straight line) all four wheels are turning at slightly different speeds, so they have the same motion relative to one another that your two hands on the garden hose have as they twist in opposite directions.
Thanks for above answers to my Questions.well i have tried few things,
1st as mortin has explained ,try taking my foot off the breaks,and then engage.And to my delight it did work.finley i got that thing in gear.
mind you it was hard taking it out of it.as you said could be due to lack of use.
2nd to Dave.no i haven't changed any oil yet,but i am going to take your advice and have it checked.because as it went in the gear i could heard some sort of funny noise came out,as if it is dry,
in any case i have not attempted to drive it on the normal road+till i have had oil level checked.
having say that, i have driven on 4wd for a short period of time i think it was fine,
(3rd Tjaerand) great detail,i'll keep law in my mind.[:o)]great advice from all.and thanks,
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