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BMW E39 Transmission Mounts Replacement
 
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Pelican Technical Article:

BMW E39 Transmission Mounts Replacement

Kerry Jonsson

Time:

4 hours4 hrs

Tab:

$50

Talent:

****

Tools:

13mm wrench, 13mm socket with ratchet, jack and jack stands

Applicable Models:

BMW 525i Sedan/Wagon (2001-03)
BMW 528i Sedan/Wagon (1997-00)
BMW 530i Sedan (2001-03)
BMW 540i Sedan/Wagon (1997-03)

Parts Required:

Transmission mounts, transmission mount cross member.

Hot Tip:

You can do the job a few different ways. You can jack up the transmission or remove the transmission mount cross member but it may be difficult unless you drop the exhaust a few inches.

Performance Gain:

Eliminate vibration, clunking and shifter movement when accelerating or decelerating

Complementary Modification:

Change Guibo flex disc

The front of your transmission is bolted to the engine and is therefore supported by your engine. The rear of your transmission is supported by two small transmission mounts on a transmission mount cross-member. If these mounts go bad they allow the transmission to rock up and down. This will give you shifter movement when switching from acceleration to deceleration along with vibration and clunking noises. In this tech article we will show you a couple of ways to gain access and replace your transmission mounts

In order to replace your transmission mounts you need to raise and support the front axle or one whole side of your vehicle. We recommend you lift and support with jack stands both axles of your vehicle because you will be working completely underneath the car. See our tech article on jacking up and supporting your vehicle.

This photo illustrates underneath the middle of the car at the tail-shaft of the transmission.
Figure 1

This photo illustrates underneath the middle of the car at the tail-shaft of the transmission. We are looking at the transmission mount cross-member (red arrow). The front of the car is at the top of the picture and the rear of the car is at the bottom. You can start one of two ways. You can remove the two 13mm nuts (green arrows) that attach the bottom of the transmission mount to the transmission mount cross-member. Or you can remove the six 13mm bolts that secure the transmission mount cross-member to the body of the car. You will need to support the transmission before removing these bolts. These bolts are behind the exhaust system. The exhaust system has been removed for photographic purposes. You may have access to these bolts by removing the exhaust from the exhaust manifolds towards the engine compartment. See our tech article on removing the exhaust to follow this procedure.

If you have removed the two transmission mount nuts from the cross member use a block of wood and a jack to jack up the transmission an inch or so.
Figure 2

If you have removed the two transmission mount nuts from the cross member use a block of wood and a jack to jack up the transmission an inch or so. The studs of the mounts should clear the cross-member.

If you are removing the cross-member then support the rear of the transmission with a jack stand.
Figure 3

If you are removing the cross-member then support the rear of the transmission with a jack stand. You may want to use a block of wood here to protect the pan but the transmission is only going to be resting on the jack stand and it is not to be moved.

This photo illustrates the middle of the car in the transmission tunnel looking towards the front end.
Figure 4

This photo illustrates the middle of the car in the transmission tunnel looking towards the front end. You are looking at the back of the transmission where it attaches to the driveshaft. Loosen the two 13mm nuts (green arrows) that attach the top of the transmission mount to the transmission mounting tabs.

Here is a close up view of the mounting nuts on the top of the transmission mount with the drive-shaft removed.
Figure 5

Here is a close up view of the mounting nuts on the top of the transmission mount with the drive-shaft removed. You only need to loosen the nuts not remove them to replace the mounts.

If you have opted to jack up the transmission instead of removing the transmission mount cross-member you will not be able to see these nuts you need to remove, A small (stubby wrench) should fit but you will not have much room to swing the wrench.
Figure 6

If you have opted to jack up the transmission instead of removing the transmission mount cross-member you will not be able to see these nuts you need to remove, A small (stubby wrench) should fit but you will not have much room to swing the wrench. Remember you only have to loosen the nuts not remove them.

Slide the Transmission mount towards the rear of the car in the direction of the blue arrow.
Figure 7

Slide the Transmission mount towards the rear of the car in the direction of the blue arrow. Pull the transmission mount all the way out. Installation is the reverse of the removal procedures. Slide the new mount onto the transmission mounting tabs and tighten the nuts. If you have jacked up the transmission slowly lower the transmission and use a screwdriver to guide the transmission mount bottom stud into the hold in the transmission mount cross-member. When you have lined up both mounts lower the transmission all the way and tighten the lower mounting nuts to the cross-member. If this proves to difficult then remove the mounts again and install the bottom of the mount in the cross member first then lower the jack and line up the upper studs in their slots on the transmission. If you have done the extra work to remove the transmission mount cross-member then installing the mounts is much easier. You can mount the top of the transmission mounts and move around the transmission mount cross-member until the lower stud on the mounts pass through the holes in the cross-member. Tighten all the fasteners to specifications and install any components you may have move to gain access.

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Comments and Suggestions:
Madox Comments: Uh am sorry for beeing a newb lol i tried to open it but i have no idea which it is, is there any pic or manual to do that? But if you dont have it, its ok you helped enough haha thx a bunch.
December 14, 2014
  Followup from the Pelican Staff: We don't currently have that tech article. If we get a chance to perform the procedure, we will be sure to document it.

I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 
Madox Comments: Hi i just like now having trouble with my e39 528i
so when i arrive at work and going to park my car, the shift stick wont go to 'P' its like blocked or something,i tried to open the console to see any broken thing or stuff but its clean and nothing broken detected. then afterwards i realized that my handbrake wont work when the engine is off, any clue of what cause and how to fix it? thx before.
December 9, 2014
  Followup from the Pelican Staff: Could be an issue with the shift interlock cable. When you remove the center console, check if the park lock lever near the shifter is blocking it from going into park. - Nick at Pelican Parts  

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