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  #31  
Old 02-28-2021, 09:47 PM
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Search forum for "partial cooling overhaul DIY"...
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  #32  
Old 03-01-2021, 06:22 AM
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%[email protected]$&!!! I broke two bolts off putting the water pump pulley back on.



This is what I've found in the past regarding lifting BMW cars from BMW.

That said; search TIS for lifting e53 and you will find this:

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Last edited by andrewwynn; 03-01-2021 at 06:30 AM.
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  #33  
Old 03-01-2021, 09:18 AM
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Unlike most rear diffs, the BMW rear diff is made of aluminum and has integrated cooling fins cast in. Jacking by the rear diff can cause extreme stress on the fins which can cause the aluminum to yield and break.
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  #34  
Old 03-01-2021, 12:14 PM
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And it's very hard on the rubber diff bushings since they are designed to quietly hold the diff in place and NOT to lift the car. I think we went through some of this in another thread.
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  #35  
Old 03-01-2021, 12:58 PM
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The rear diff is an acceptable lift point throughout the X5 range. You must be sure however to get in front of the cover. Risk of a leak or damage to fins as mentioned is a concern if you put the jack under the diff cover.

I'm not sure about damage to the bushings, but BMW does not mention it as a concern. AFAIK anyway. I've lifted our X5's from the diffs at least 20 times between the 3 and so far, no ill effects. The F15 threw me for a loop initially because it has the adaptive drive options (all of them) and so has an extra seam on it for the motor or whatever it is that manipulates the diff.
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  #36  
Old 03-01-2021, 01:04 PM
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Quote:
Originally Posted by crystalworks View Post
The rear diff is an acceptable lift point throughout the X5 range. You must be sure however to get in front of the cover. Risk of a leak or damage to fins as mentioned is a concern if you put the jack under the diff cover.

I'm not sure about damage to the bushings, but BMW does not mention it as a concern. AFAIK anyway. I've lifted our X5's from the diffs at least 20 times between the 3 and so far, no ill effects. The F15 threw me for a loop initially because it has the adaptive drive options (all of them) and so has an extra seam on it for the motor or whatever it is that manipulates the diff.
Actually quote from TIS:

Still I've done it several times too.
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  #37  
Old 03-01-2021, 01:05 PM
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Quote:
Originally Posted by Clavurion View Post
Actually quote from TIS:

Still I've done it several times too.
Quote from same TIS:



BMW has been known to contradict itself before. But they state as long as you avoid the cover, the diff is one of the 3 listed jack points.
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Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

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  #38  
Old 03-01-2021, 01:09 PM
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Here's a thread just on the diff jacking:
https://xoutpost.com/bmw-sav-forums/...rear-diff.html

In addition to the breaking of stuff, I have always considered diff jacking to be a risk of disturbing the diff gasket, leading to a leak. So if breakage is not a concern, then at least it may be important to jack the differential itself, rather than the cover, or the interface between the two. That could explain what the TIS is talking about, cited above.

When I first got my x5, I spent some effort figuring out how to jack the rear, and ended up building a special adapter that does not put any load on the diff, but puts it all on the square beam that goes from left to right, behind the diff. Last time I was under there, I took some more photos to show the fit, and will upload them to that thread listed above.
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  #39  
Old 03-01-2021, 01:19 PM
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Quote:
Originally Posted by crystalworks View Post
Quote from same TIS:



BMW has been known to contradict itself before. But they state as long as you avoid the cover, the diff is one of the 3 listed jack points.
Yes, that is mentioned on many older models or did you find this somewhere on E53 section?
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  #40  
Old 03-01-2021, 02:17 PM
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Quote:
Originally Posted by Clavurion View Post
Yes, that is mentioned on many older models or did you find this somewhere on E53 section?
Seems I was mistaken. It shows as not permissible on the E53 as you said. But shows as permissible on the E70 and F15 in TIS. I'm not sure of the engineering differences... but without doing some sort of custom setup like oldskewel (or a lift) I'm not sure how else you would easily lift the rear?

I always use a 2x4 on the lift pad, make sure to clear the diff cover, and get jack stands under the truck as quickly as possible so I'm comfortable using the diff... but looks like you are not supposed to lift from the diff on the E53 according to BMW.
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2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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