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Hood and Trunk Support Strut Replacement
 
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Pelican Technical Article:

Hood and Trunk Support Strut Replacement

Nick Czerula

Time:

1 hour1 hr

Tab:

$100

Talent:

**

Tools:

Small flathead screwdriver, rags

Applicable Models:

BMW Z4 Convertible (2003-06)
BMW Z4 Coupe (2006)

Parts Required:

Support struts, grease

Hot Tip:

Have a friend nearby to help hold hood or trunk lid

Performance Gain:

Hood or trunk will stay open again

Complementary Modification:

Replace in pairs

The hood and trunk lift struts hold the weight of the hood or trunk lid when opened. When they fail, the hood no longer stays open without additional support. The struts are gas filled, but when they fail oil sometimes leaks out. You may notice oil stains on the strut cylinder. If this is the case, replace them before they totally fail. Nothing is worse than having the engine hood come down on top of you while you are working on your Z4.

Avoid marring the paint. Work with a plastic prying tool or wrap a screwdriver tip with masking tape before prying out body or interior items.

Keep in mind that when your car was serviced before, parts may have been replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have, so be prepared with different size sockets and wrenches.

Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Do not work on your vehicle if you feel the task is beyond your ability.

Vehicle models change and evolve, as they grow older, so the vehicle shown in our illustrations may vary slightly from yours. If something seems different, let us know and share your info to help other users. Do you have questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information.

Hood Support Struts: The hood support struts hold the weight of the hood or trunk lid when opened (red arrows).
Figure 1

Hood Support Struts: The hood support struts hold the weight of the hood or trunk lid when opened (red arrows).

Hood Support Struts: Use a rod or hood support (red arrow) to hold the hood open while you remove the struts.
Figure 2

Hood Support Struts: Use a rod or hood support (red arrow) to hold the hood open while you remove the struts.

Hood Support Struts: Working at the top of the support strut, use a small flathead screwdriver and move the retaining clip (red arrows) to the top of the socket.
Figure 3

Hood Support Struts: Working at the top of the support strut, use a small flathead screwdriver and move the retaining clip (red arrows) to the top of the socket. You do not have to remove it. Just move it up enough so the strut will come off the ball. Repeat these steps for the lower socket.

Hood Support Struts: Pull the support strut (green arrow) off the stud (red arrow).
Figure 4

Hood Support Struts: Pull the support strut (green arrow) off the stud (red arrow).

Hood Support Struts: Then pull the lower socket (green arrow) off the stud (red arrow) and remove from the vehicle.
Figure 5

Hood Support Struts: Then pull the lower socket (green arrow) off the stud (red arrow) and remove from the vehicle. Clean the support strut mounting points and apply a small amount of grease. Then install the new support struts. Be sure the retaining clips lock when installing. Try to pull the strut off to confirm it is properly engaged.

Trunk Support Struts: The trunk support struts hold the weight of the hood or trunk lid when opened (red arrow).
Figure 6

Trunk Support Struts: The trunk support struts hold the weight of the hood or trunk lid when opened (red arrow).

Trunk Support Struts: Use a rod or hood support (green arrow) to hold the hood open while you remove the struts.
Figure 7

Trunk Support Struts: Use a rod or hood support (green arrow) to hold the hood open while you remove the struts.

Trunk Support Struts: Working at the top of the support strut, use a small flathead screwdriver and move the retaining spring to the top of the socket (red arrow).
Figure 8

Trunk Support Struts: Working at the top of the support strut, use a small flathead screwdriver and move the retaining spring to the top of the socket (red arrow). You do not have to remove it. Just move it enough so the strut will come off the ball. Working at the bottom of the support strut, use a small flathead screwdriver and move the retaining spring down to the bottom of the socket. You do not have to remove it. Just move it down far enough so the strut will come off the ball. Pull the support strut off the ball end. Then pull it off the lower ball end and remove it from the vehicle.

Trunk Support Struts: Clean the support strut mounting points and apply a small amount of grease (green arrow).
Figure 9

Trunk Support Struts: Clean the support strut mounting points and apply a small amount of grease (green arrow). Then install the new support struts. Be sure the retaining clips lock when installing. Try to pull the strut is off to confirm it is properly engaged.

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Page last updated: Wed 12/7/2016 02:58:48 AM