How to Align a Trunk Lid

Written by harvey birdman
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How to Align a Trunk Lid
Car trunks must be carefully aligned in order to prevent leaks. (car image by jodi mcgee from Fotolia.com)

Aligning a car's boot may seem like a trivial part of car maintenance but it is essential to prevent rust. If a boot is not properly aligned, the seals around the edges will not sit properly and water may pool on the sides or even inside of the boot. To properly align your boot, you will need a pair of calipers and a wrench set. It is also helpful to have an assistant hold the boot while you measure it and make adjustments.

Skill level:
Moderate

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Things you need

  • Caliper
  • Wrench set
  • Assistant

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Instructions

  1. 1

    Turn off the car. Pop open the boot by pulling on the boot release button inside the cab of your car.

  2. 2

    Pull the boot lid halfway up, and then have your assistant hold onto it while you reach inside the boot and loosen the bolts on the supporting arms. There will be four bolts--two on each side. Do not remove the bolts--merely loosen them, because all you will be doing is changing the position by millimetres. There is a degree of play within the bolt holes because of the clearance between the bolt hole walls and the bolts themselves. Loosening the bolts will allow you to shift the bolts within the bolt holes.

  3. 3

    Lower the boot lid, but do not let it engage the boot latch. Have your assistant keep supporting it. Place calipers on the right side seam and measure the gap. Write this number down so you don't forget it. Measure the seam on the left side and compare the two numbers. They should be the same. If they are not, have your assistant shift the boot lid until the numbers are the same.

  4. 4

    Measure the gaps at the front and back of each side, to ensure that the boot lid is not slanted to one side or another. When it is properly aligned, have your assistant stay perfectly still. Access the inside of the boot by folding the rear seats down and crawling inside the boot. Tighten the left outer bolts and then the right inner bolt until they are snug but not tight--you are just trying to keep the lid in place for now. Tighten the bottom left bolt and then the right top bolt until they are all the way down, and then go back and tighten the first bolts all the way down.

  5. 5

    Crawl out of the boot, fold the seats back up and have your assistant close the boot.

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