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  #13  
Old 11-24-2009, 03:02 PM
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Re: Axle oil change help.

The C200F and C200F are referring to specific axles. You can find some of the answers you are seeking here - http://www.wkjeeps.com/wk_specs.htm#FRONTAXLE

IMHO if you are going to do the rear axle, you owe it to yourself to pull the cover and drain all the axle lube. At least on my WK there is a drain plug on the front diff so no need to pull the cover unless you just want to take a look at the condition of the gears.
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  #14  
Old 11-24-2009, 03:05 PM
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Re: Axle oil change help.

i believe it's the same amount for 06 too someone please let me know ???

i need to change mine also
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  #15  
Old 11-24-2009, 03:22 PM
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Re: Axle oil change help.

If you have QDII, you need one bottle of the friction modifier PER AXLE. They are about $8 each at the dealer. I believe the Vari-Lok axle is found in Jeep equipped with QTII. The C200FE/C213RE axles are the QDII axles with the electronic limited slip, and those need a full bottle in each axle. Idk if you need any friction modifier if you have QTI.

Since you have the 3.7 I'm going to assume you have QTI or QTII - if QTII buy one bottle of the additive. I think you don't need any with the QTI.

Buy 4 bottles of 75W-140 (I use mobile 1). You fill each diff until it starts to drip out from the fill hole. Should take just under 2 quarts in the rear and like 1.7-1.8 quarts in the front.

Also need a tube of RTV to reseal the rear diff. Make sure your thoroughly clean and old RTV off the rear diff and rear diff cover before you put new RTV on it.

I'd recommend getting a fluid pump too - it will make your life much easier when refilling the front axle, and also when you change the TC fluid it helps a lot there as well.

In addition:

There is a drain and fill hole on the front axle. Make sure you remove the fill plug BEFORE you remove the drain plug. You don't want to get in a situation where you have drained the fluid but can't get the fill plug out and you're stuck with an empty diff.

The rear diff fluid is changed my removing the rear diff cover completely. I start by loosening all the bolts a bit, then loosen the bottom bolts more and crack it open with a putty knife or something similar. Let the majority of the fluid drain and then remove the cover completely. Then be sure to get off as much of the old RTV as possible and clean it with denatured alcohol or something similar before you apply a new bead of RTV before reinstalling. Leaving old RTV on there can make a faulty seal which would mean a leak.
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  #16  
Old 11-24-2009, 04:12 PM
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Re: Axle oil change help.

If your doing it yourself I would recommend getting the pump and not remove the diff cover. There is no need to. You can remove almost all the old oil and contaminents with it, without having to buy a new gasket and taking off the cover. I always used a pump on my previous 2 GC's and my WK recently without ever removing the covers. Just my 2 cents, and has always worked fine for me.

I have always been fearful of stripping a bolt or something not seating back correctly, and even in my WK manual it says you do not need to remove the covers unless checking the gears or doing an overhaul.
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Old 11-24-2009, 04:13 PM
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Re: Axle oil change help.

what do these so called fluid pumps look like?
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Old 11-24-2009, 04:18 PM
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Re: Axle oil change help.

Quote:
Originally Posted by boniomario View Post
what do these so called fluid pumps look like?

It looks like a small basket ball air pump, one hose goes into the top and another on the bottom. When you pump it the fluids follow it. Its like 7 bucks at Walmart in the auto section.
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Old 11-24-2009, 04:18 PM
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Re: Axle oil change help.

Quote:
Originally Posted by TimmyB View Post
If your doing it yourself I would recommend getting the pump and not remove the diff cover. There is no need to. You can remove almost all the old oil and contaminents with it, without having to buy a new gasket and taking off the cover. I always used a pump on my previous 2 GC's and my WK recently without ever removing the covers. Just my 2 cents, and has always worked fine for me.

I have always been fearful of stripping a bolt or something not seating back correctly, and even in my WK manual it says you do not need to remove the covers unless checking the gears or doing an overhaul.
The rear cover is so easy to do I think it is worth it to get all the fluid out and check the gears to make sure everything looks ok. There is no gasket to buy for the rear diff, it is sealed with RTV. I can do the rear diff in like 30 minutes tops... def worth it to make sure everything is OK in there. I can't see how someone could mess it up. Also the bolts aren't torqued down that tightly (30 foot pounds for the rear).. so they should never be that hard to get off. Then when retightening, snug them by hand and then tighten them down in a star pattern (like when tightening wheel lugs)

Quote:
Originally Posted by boniomario View Post
what do these so called fluid pumps look like?


The one I have is not this fancy... but that is the general idea.
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  #20  
Old 11-24-2009, 04:19 PM
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Re: Axle oil change help.

So any 75W-140 Synthetic will work on WKs?
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  #21  
Old 11-24-2009, 04:21 PM
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Re: Axle oil change help.

Quote:
Originally Posted by iJeep View Post
So any 75W-140 Synthetic will work on WKs?
Yep. I recommend Mobil 1, but RP also makes good stuff (just a bit pricey). The M1 fluid is around $16-$17 per quart at Autozone or Advance.
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  #22  
Old 11-24-2009, 04:22 PM
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Re: Axle oil change help.

Quote:
Originally Posted by LTrainGC View Post
The rear cover is so easy to do I think it is worth it to get all the fluid out and check the gears to make sure everything looks ok. There is no gasket to buy for the rear diff, it is sealed with RTV.





The one I have is not this fancy... but that is the general idea.

I thought a gasket is needed at both covers. But like I said I never took mine off. For me, its like doing my engine oil, I could take off the oil pan and clean it up good and check everything out under there but its really not needed.

And the pump I have from Walmart has two hoses, it sucks in from the top hose and spits it out the bottom hose and can be used as a siphon. A few pumps and it creates a vacumm and sucks out the fluid on its own without anymore pumping action. Hmm, sounds kinky. lol
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  #23  
Old 11-24-2009, 04:23 PM
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Re: Axle oil change help.

excellent discussion...keep this going guys! Good info
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  #24  
Old 11-24-2009, 04:23 PM
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Re: Axle oil change help.

I think I remember seeing oil at the auto store with an additive already in it. Might have to go there and ask someone that works there about it.
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