MacBook Unibody Model A1278 Lower Case Replacement

Replace the aluminum bottom case in a MacBook Unibody.

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Edit Step 1 Access Door  ¶ 

  • With the case closed, place the Unibody top-side down on a flat surface.

  • Depress the grooved side of the access door release latch enough to grab the free end. Lift the release latch until it is vertical.

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Edit Step 2  ¶ 

  • The access door should now be raised enough to lift it up and out of the Unibody.

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Edit Step 3 Battery  ¶ 

  • Be sure the access door release latch is vertical before proceeding.

  • Grab the white plastic tab and pull the battery up and out of the Unibody.

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Edit Step 4 Lower Case  ¶ 

  • Remove the following eight screws securing the lower case to the chassis:

    • One 3 mm Phillips screw.

    • Three 13.5 mm Phillips screws.

    • Four 3.5 mm Phillips screws.

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Edit Step 5  ¶ 

  • Using both hands, lift and remove the lower case off the upper case.

To reassemble your device, follow these instructions in reverse order.

For more information, check out the MacBook Unibody Model A1278 device page.

Required Tools

Phillips #00 Screwdriver

$5.95 · 50+ In stock

Recommended Tools

Universal Drive Adapter

$29.95 · 50+ In stock

iFixit Lock Pick Set

$29.95 · 50+ In stock

Inspection Scope

$39.95 · 50+ In stock

Frictionless Ratchet

$24.95 · 50+ In stock

Portable Anti-Static Mat

$34.95 · 43 In stock

Comments Comments are onturn off

On my model, it seemed the top-left was 3.5mm and the bottom 4 were 3 mm.

Jim, · Reply

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