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BMW E39 Rear Forward Upper Link Replacement
 
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Pelican Technical Article:

BMW E39 Rear Forward Upper Link Replacement

Kerry Jonsson

Time:

2 hours2 hrs

Tab:

$150

Talent:

***

Tools:

16mm, 6mm socket with ratchet or wrench

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:

Rear forward upper link, fasteners

Hot Tip:

Spray the fasteners with penetrating oil to make them easier to remove.

Performance Gain:

Prevent uneven tire wear and improve handling.

Complementary Modification:

Get a wheel alignment after completion.

BMWs are world renowned for their handling. The reason for this is the use of suspension links that change the suspension geometry as the angle of the tire as the suspension moves through its travel. The goal is to maintain a full tire contact patch even at near full suspension compression. This links have bushing and ball-joints in them that can wear and can cause rattles and uneven tire wear. In this tech article we are going go over all the steps to replace the rear forward upper link.

The procedure for replacing the rear forward upper links is the same for both the left and right side. While we will be showing instructions from either side understand that the same steps have to be followed on both side of the car.

Lift and support rear axle of the vehicle. You do not have to remove the tires to perform this job but it does make access much easier. See our tech article on jacking and supporting your vehicle and remove the rear tires.

This photo illustrates the right side rear wheel well looking down at the front of the spindle.
Figure 1

This photo illustrates the right side rear wheel well looking down at the front of the spindle. Use a 16mm wrench to loosen the mounting nut of the rear forward upper link attaching the link to the spindle. You will need to use a 6mm wrench to secure the ball-joint shaft otherwise it will spin around as you loosen the nut. These bolts are tight and you may need to use a pair of vise grips to hold the ball-joint shaft still (in place of the small wrench in thisPicture).

Once the nut is totally removed pull the rear forward upper link ball-joint out of the spindle by moving it in the direction of the blue arrow.
Figure 2

Once the nut is totally removed pull the rear forward upper link ball-joint out of the spindle by moving it in the direction of the blue arrow.

This photo illustrates the sub-frame side of the rear forward upper link.
Figure 3

This photo illustrates the sub-frame side of the rear forward upper link. Use a 16mm socket on the mounting bolt (green arrow) and use a 16mm wrench to hold the mounting nut (yellow arrow) on the other side of the sub-frame mount.

Mark the position of the eccentric bolt here to keep the same position of the mounting bolt.
Figure 4

Mark the position of the eccentric bolt here to keep the same position of the mounting bolt. This will keep your wheel alignment as close as possible to what it was although it is a good idea to get a four wheel alignment when you are done with your repair.

Once the mounting nut is all the way off remove the mounting bolt (green arrow) by moving it in the direction of the blue arrow and pull the link from the vehicle.
Figure 5

Once the mounting nut is all the way off remove the mounting bolt (green arrow) by moving it in the direction of the blue arrow and pull the link from the vehicle. Installation is the reverse of the removal procedures. Fit the rear forward upper link to the sub-frame, install the mounting hardware and tighten. Then fit the rear forward upper link ball-joint end to the spindle fitting and tighten the mounting bolt while holding the ball-joint shaft.

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Page last updated: Sat 12/3/2016 02:06:13 AM