Screw Drive Rack Replacement

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  • rick church
    New Member
    • Jan 2011
    • 2

    #1

    Screw Drive Rack Replacement

    I have a Liftmaster Model 2000SDR screw drive unit. The plastic rack, part number 81C168 is stripped. I bought a new part on line. How do I remove the old part and install the new rack unit? Thanks in advance!
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