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  #1  
Old 11-23-2019, 10:16 PM
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Transmission mount DIY for 3.0

After much searching and not finding much info on the subject I thought I could share my experience.

Total cost of this job was $70, $50 for the tool (I happened to get a deal on fleabay) and $20 for the the new bushing. See the first pic for the tool used.

1. Have the car in the air and supported safely.

2. Remove the heat shield around the exhaust to expose the 3 hidden cross member bolts.

3. Using a floor jack (if working on the floor) slightly lift the transfer case to take the tension off the long bolt running through the cross member and rubber mount. Loosen nut and pull out long bolt. I chose to trust my jack for the length of this procedure but it would be wise to now support the transfer case with a jack stand.

4. Remove the 6 bolts holding the crossmember and remove crossmember (see 2nd pic). Now you will have good access to the bushing (3rd pic). As you can see in the 4th pic my bushing is not terrible but it is fatigued with cracks and is quite hardened.

5. Pics 5 and 6 show the the tool installed. Pic 7 is in the action, I recommend lubricating the threads on the tool and try to refrain from using an impact (same goes for installation).

6. Now with the bushing removed pic 8, clean out any dirt and corrosion.

7. You are now ready to install. Spray a little silicone spray on the portion of the mount going into trans (this will help with installation). In pic 9 on your new bushing you will notice an arrow. Line up the arrow with arrow on the trans mount pic 10, and assemble your tool to press in the new bushing pic 12. Last pic installed

8. Reinstall cross member, thread in the 6 bolts loosely. First torque the long nut and bolt running through the mount to 55ft-lbs. (all torque specs from bentley manual)

9. Replace jack stand with floor jack and hold the transfer case in an unloaded position from the crossmember and torque the 6 crossmember bolts down to 30ft-lbs.

10. Reinstall heat shield
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  #2  
Old 11-24-2019, 02:39 PM
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Nice write up!
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Old 03-09-2020, 09:47 PM
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Absolutely fantastic write up.

1. Where did you get the toolset, any links you can share?
2. Did you need to take off the underbody reinforcement plate in order to take off the cross-member?

Thank you
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Old 03-10-2020, 02:16 PM
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1. I purchased the tool from ebay but the seller is based out of China, so at the moment buying the same tool will be difficult due to the fear mongering of coronavirus.... cheapest I found was $160usd for a similar tool. https://www.ebay.com/itm/BMW-X5-Tran...ty!98230!US!-1

2. I did not remove the underbody reinforcement plate to drop the crossmember. Toughest part was removing the heat shield for the exhaust.... but it bends easy enough
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Old 03-10-2020, 09:09 PM
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Nice post, thanks!
Just curious, what were your symptoms and were they fixed once the new bushing was installed?
This is the transfer case bushing right?
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Old 03-10-2020, 10:51 PM
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I was having driveline vibrations. First replaced the rear driveshaft carrier bushing along with the bearing (bearing was shot and skipping)...then moved on to rear diff carrier bushings..... then finally the transfer case/transmission bushing. They were all failing to some degree and once all replaced it really smoothed out my X5.
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Old 03-10-2020, 11:15 PM
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Oooh if you get a chance to elaborate on the driveline vibrations I would be interested. I know my engine mounts are bad and intend on replacing them, that's why I was wondering about the reinforcement plate for the transmission mount or if the transmission mount can wait (thankfully for my wallet, it can). But I do get a unnerving vibration while cruising or accelerating around 60-70mph, but not all the time. I just attributed it to the engine mounts which will be replaced soon.

Quote:
Originally Posted by KMan View Post
I was having driveline vibrations. First replaced the rear driveshaft carrier bushing along with the bearing (bearing was shot and skipping)...then moved on to rear diff carrier bushings..... then finally the transfer case/transmission bushing. They were all failing to some degree and once all replaced it really smoothed out my X5.
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Old 03-11-2020, 04:00 PM
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Quote:
Originally Posted by DriverX View Post
Oooh if you get a chance to elaborate on the driveline vibrations I would be interested. I know my engine mounts are bad and intend on replacing them, that's why I was wondering about the reinforcement plate for the transmission mount or if the transmission mount can wait (thankfully for my wallet, it can). But I do get a unnerving vibration while cruising or accelerating around 60-70mph, but not all the time. I just attributed it to the engine mounts which will be replaced soon.
I was having vibrations and a shimmy when accelerating uphill from 25-40mph, it felt as if it were pulsing. In the past I replaced my motor mounts as well while i was doing the oil pan gasket. So much easier to replace them with the subframe dropped down. Best of luck tracing down your vibrations!
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Old 03-11-2020, 10:46 PM
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I had vibrations from 90kph to 105kph. I had 1 tire that the belts were happy only in one direction, worn motor and transmission mounts (replaced) a track control arm (replaced) and guibos (replaced) and now it's gone. Although I have a body panel sounding vibration at idle in/out of gear now so I will be reviewing my harmonic balancer pretty soon. N62 4.8iS.

Everything I listed above lessened the problem but didn't fix it until everything was done and road force balancing completed.

PS. I also did new rotors...

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Old 03-12-2020, 06:27 AM
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Originally Posted by EODguy View Post

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