LiftMaster LJ8950W Instructions - English French Spanish - Page 1

12V Replacement Motor Model 041D1624-2 1. Disconnect power. To prevent possible SERIOUS INJURY or DEATH: • Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. To prevent damage to the receiver logic board, DO NOT touch printed circuit board of replacement receiver logic board during installation. ALWAYS wear protective gloves and eye protection when changing the battery or working around the battery compartment. WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Specifications Volts 120 Vac - 60 Hz, Only Current 1.5 AMP Rated Load 385 in/ lb./sec. Included Items Motor and Bracket Assembly 1) G 2. Open the front panel (A). G H A 3. Remove the battery cover. Disconnect the battery (if applicable). Remove the battery and set aside (B). B D B C B 4. Label wires for reinstallation. Disconnect the wires from the quick connect terminals (C). NOTE: If there is a resistor located on the green wire traps, do not remove. 5. Remove the receiver logic board cover (D). 1/4" 5/16" screws screws F G G 8. Remove the four screws securing the cover to the chassis (G). E 6. Unplug the wire harnesses from the receiver logic board (E). 7. Remove the four screws securing the receiver logic board, remove and discard (F). 9. Remove wires from the motor bracket. Remove the E-Clip and push clevis pin down, then remove the 4 screws (5/16" and 1/4") holding the motor in place (H). 10. Lift motor bracket up and off of the clevis pin, remove chain from motor sprocket and discard motor. 11. Reinstall new motor, ensure chain is on unit sprocket, place chain over motor sprocket, push clevis pin into place, install C-clip. Fasten motor down with 4 screws. 12. Reinstall the cover. Verify that the tabs in the cover align with the holes in the top of the chassis. Route the wire harnesses and wires through the cover (G). 13. Install the receiver logic board and connect the wire harnesses. Ensure the wire harnesses are connected properly. Route the antenna through the channel in the cover. Install receiver logic board cover. 14. Reconnect the wires to the quick connect terminals (C). 15. Install the battery (if applicable) and connect the battery connectors. Install the battery cover. 16. Reconnect power. Refer to your manual to reset your travel and force settings. 1