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BMW E39 Motor Mounts Removal
 
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Pelican Technical Article:

BMW E39 Motor Mounts Removal

Kerry Jonsson

Time:

4 hours4 hrs

Tab:

$100

Talent:

*****

Tools:

13mm 16mm socket, floor jack and small block of wood.

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:

Engine motor mounts

Hot Tip:

Support the engine with a jack and a block of wood to protect the oil pan

Performance Gain:

Reduce engine vibration and movement while under load

Complementary Modification:

Clean the under body so you can more easily spot leaks

While an engine is running it makes a lot of engine noises and vibrations. BMWs use sound deadening pads and covers to mask the noise and rubber engine mounts isolate the engine vibration from the chassis of the car. When a motor mount fails it allows the engine to move around in the engine compartment. Obviously this can cause excessive vibration and movement and lead to clunking under acceleration and/or deceleration.

The lower engine cover needs to be removed to access the motor mounts. See our tech article on removing the engine lower covers. Also with the six cylinder engine the air-box and air intake tubes will need to be removed to have access to the motor mount. Other components have been removed for photographic purposes such as the alternator and the power steering pump. It does not have to be removed to replace the motor mounts.

This photo illustrates the driver side motor mount for an 8-cylinder engine.
Figure 1

This photo illustrates the driver side motor mount for an 8-cylinder engine. Remove the 16mm fastener (green arrow) that holds the top of the mount to the engine bracket. The motor mount bracket is identical on the 6 cylinder engine.

This photo illustrates the right side of the engine compartment looking down at the motor mount.
Figure 2

This photo illustrates the right side of the engine compartment looking down at the motor mount. Remove the 16mm fastener (green arrow) that holds the top of the motor mount bracket to the engine bracket.

This photo illustrates the motor mount on the right side of a six cylinder engine.
Figure 3

This photo illustrates the motor mount on the right side of a six cylinder engine. You can see the bracket and its position is almost identical to the 8 cylinder model. Remove the 16mm fastener that holds the engine bracket to the top of the motor mount.

With a wooden block to protect the oil pan, jack up the engine a few inches.
Figure 4

With a wooden block to protect the oil pan, jack up the engine a few inches.

This photo illustrates the left side motor mount.
Figure 5

This photo illustrates the left side motor mount. Make sure you have jacked the engine up enough to clear the upper stud of the motor mount (red arrow).

Looking at the right side of the motor mount make sure the engine bracket has cleared the stud on the motor mount (red arrow).
Figure 6

Looking at the right side of the motor mount make sure the engine bracket has cleared the stud on the motor mount (red arrow).

Looking from the bottom of the car at the left side mount remove the two 13mm fasteners (green arrows) that hold the motor mount to the sub-frame.
Figure 7

Looking from the bottom of the car at the left side mount remove the two 13mm fasteners (green arrows) that hold the motor mount to the sub-frame.

This photo illustrates under the car on the right side looking at the motor mount.
Figure 8

This photo illustrates under the car on the right side looking at the motor mount. Remove the two 13mm fasteners (green arrows) that hold the mount onto the sub-frame.

This photo illustrates the left side motor mount.
Figure 9

This photo illustrates the left side motor mount. Tilt the mount and pull it out from the between the engine bracket and the sub-frame.

On the right side tilt the motor mount and pull it out from between the engine bracket and the sub-frame.
Figure 10

On the right side tilt the motor mount and pull it out from between the engine bracket and the sub-frame. Installation is the reverse of the removal steps. Fit the motor mounts in between the engine brackets and fit it into the mounting holes of the sub-frame. Lower the engine so the holes in the engine brackets line up with the studs of the motor mounts on both sides of the engine. Lower the engine, install and tighten all the fasteners that attach the motor mounts. Install and components you removed to access the motor mounts.

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Comments and Suggestions:
JaimeZX Comments: @Carlozz: Bentley manual says 33 ft-lbs on the motor mount-to-subframe.

@PP - Your pictorials are great, but it sure would be nice if more of them were for the V8.
February 21, 2016
  Followup from the Pelican Staff: Thanks for the input on this one. We appreciate the help.
- Nick at Pelican Parts
 
ccarlozz Comments: Anyone know the torque specs for the motor mounts?
December 22, 2015
  Followup from the Pelican Staff: I don’t have that info.

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
 

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Page last updated: Fri 12/9/2016 02:06:28 AM