Maintenance 101: 4.7L How to change your Differential Fluid - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 12 (permalink) Old 07-29-2009, 10:11 PM Thread Starter
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Maintenance 101: 4.7L How to change your Differential Fluid

I made a quick video on how to change the oil front and rear differentials my 4.7L, 4X4 Grand Cherokee and thought I would share here since they have the same drive train. Hope this helps someone out if they have never done their own maintenance before!

http://www.youtube.com/watch?v=rNdHmpQQJJQ


Jack



Warning: I am not a professional and not held liable for any damages to any vehicle that you work on or have someone work on. This is only for demonstration purposes on how I have done work on my own vehicle and may have left out some critical information. Please refer to your dealer before performing any maintenance or work on your own.

Last edited by Lifted79CJ7; 07-30-2009 at 11:18 PM.
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post #2 of 12 (permalink) Old 07-30-2009, 05:10 PM
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Diff Service at Dealer

Thanks for the video.

I was at the dealer for regular maintenance and the service rep told me that I should consider getting the front/rear diff. oil changed out. I have an '07 LTD HEMI with only 25,000 miles on it.

They wanted $315.00 all in just for the diff. work.

Do you know if any warranty would be voided if I did the work myself?

Thanks
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post #3 of 12 (permalink) Old 07-30-2009, 05:42 PM Thread Starter
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It shouldn't be voided as long as you stick with products that are approved for your vehicle and as long as you keep receipts and mileage with it. That's what I have been doing. I would still consult with your warranty provider first though. The dealer is a rip because they have to pay all the staff, plus insurance through the roof, chemical pick up fee's, blah, blah,blah. Do it yourself and return the used oil to pep boys. This took me about 30 or 45 minutes to do in my garage - well worth saving several hundred dollars in my book!
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post #4 of 12 (permalink) Old 07-31-2009, 08:23 PM
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Thanks for the info!
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post #5 of 12 (permalink) Old 06-07-2018, 09:08 AM
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Hi, I know this is an old thread. thanks for the link and just to be sure, the front diff doesn't have a separate lower drain plug, you have to pump out what's in there from the same plug you fill it from? Cheers

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post #6 of 12 (permalink) Old 06-07-2018, 09:39 AM
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are you sure? i made the same assumption when i changed mine but the service manual says otherwise.
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post #7 of 12 (permalink) Old 06-07-2018, 01:53 PM
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I only thought that was the case from the link that was in the first post. I would have thought there would have been a drain plug but not sure where. Could the drain plug you reference there be for the transfer case?

Are there any images that would show it?

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post #8 of 12 (permalink) Old 06-07-2018, 04:51 PM
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There is a drain plug for the front diff, on the passenger side. It takes the same 14mm allen key to take out as the fill plug does.

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post #9 of 12 (permalink) Old 06-08-2018, 02:29 AM
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Quote:
Originally Posted by consumedbywater View Post
There is a drain plug for the front diff, on the passenger side. It takes the same 14mm allen key to take out as the fill plug does.


Amazing, thanks, will take a look for it. Makes sense there would be!

This next question may seem a bit stupid (as I presume ou should always keep it as level as poss) but am I able to drain the front diffs and transfer case having jacked up the front slightly so I can get under a bit easier or will that affect the drain and refill amounts badly? Probably only talking 10cm raise or something. Same for the rear diff. Thanks

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post #10 of 12 (permalink) Old 06-08-2018, 07:01 AM
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The Front Diff and transfer case have drain plugs - think a 1/2 inch drive ratchet fits the diff one and possibly the transfer case. The rear diff does not have a drain plug - remove cover to drain. To put oil back in get one of those pumps that fit oil bottles - cheap at auto parts store or many retail stores.

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