Model # 139664956 Official Craftsman garage door opener

Here are the diagrams and repair parts for Official Craftsman 139664956 garage door opener, as well as links to manuals and error code tables, if available.

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Error Codes

Model diagram and schematic

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Showing 10 of 96 parts |

Chassis assembly diagram

Chassis assembly

Part #4A1258

The manufacturer no longer makes this part, and there's no substitute part

#5A

Radio controls diagram

Transmitter

Part #6634

The manufacturer no longer makes this part, and there's no substitute part

Chassis assembly diagram

Garage door opener hanging bracket

Part #12B350

The manufacturer no longer makes this part, and there's no substitute part

#39

Chassis assembly diagram

Screw

Part #171A162

The manufacturer no longer makes this part, and there's no substitute part

#NI

All parts diagram

Hardware bag

Part #1A1922

The manufacturer no longer makes this part, and there's no substitute part

#14

Rail assembly diagram

Rope handle

Part #1A2234

The manufacturer no longer makes this part, and there's no substitute part

#21

Rail assembly diagram

Bolt

Part #171A191

The manufacturer no longer makes this part, and there's no substitute part

Radio controls diagram

Cct board

Part #4A1206

The manufacturer no longer makes this part, and there's no substitute part

#36C

Chassis assembly diagram

Limit mtg ki

Part #4A1423

The manufacturer no longer makes this part, and there's no substitute part

#18

Chassis assembly diagram

Gear

Part #81B11

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your garage door openers

Choose a symptom to see related garage door opener repairs.

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Why won't my garage door opener fully open or close the garage door?

Main causes: garage door opener misaligned, travel limits need adjustment, bad travel limit switches, faulty logic contr…

Why won't my garage door opener open the garage door?

Main causes: garage door locked, damaged garage door tracks, up-force setting needs adjustment, RPM sensor failure, bad …

Why does my garage door opener reverse on its own?

Main causes: safety sensor beams blocked, safety sensors not aligned, downforce setting needs adjustment, damaged garage…

What preventive maintenance does my garage door opener need?

Things to do: check garage door travel, tighten brackets and fasteners, test safety sensors, check travel limits and for…

Why does my garage door opener work intermittently?

Main causes: radio interference, weak remote batteries, sunlight interference with safety sensor beams, safety sensors n…

Why doesn't my garage door opener work?

Main causes: faulty logic control board, bad RPM sensor, broken gears in the drive system, bad drive motor…

Why does my garage door opener open and close by itself?

Main causes: neighbor's remote programmed at the same time as yours, faulty wall control wiring, bad wall control unit…

Why is my garage door opener noisy?

Main causes: loose fasteners, broken brackets, need preventive maintenance, worn drive gears, loose or worn belt, loose …

Most common repair guides to help fix your garage door openers

These step-by-step repair guides will help you safely fix what’s broken on your garage door opener.

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How to replace a garage door opener battery

The garage door won't move during a power outage if the battery is dead. Here’s how to replace it.…

Repair difficulty

Time required

15 minutes or less

How to replace a garage door opener wall control

If you push the control button on the wall control and the garage door doesn’t move, the control is defective. Replace i…

Repair difficulty

Time required

15 minutes or less

How to replace a chain-drive garage door opener RPM sensor

Learn how to replace the RPM sensor if the door only moves 6 to 8 inches at a time and the LED light flashes 5 times. …

Repair difficulty

Time required

60 minutes or less

Effective articles & videos to help repair your garage door openers

Use the advice and tips in these articles and videos to get the most out of your garage door opener.

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Top questions about Sears and Sears PartsDirect

How to repair broken or damaged wires video

Learn how to repair broken, frayed or damaged wires in your appliances.…

Model # 139664956 Official Craftsman garage door opener

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Most common symptoms to help you fix your garage door openers

Why won't my garage door opener fully open or close the garage door?

Why won't my garage door opener open the garage door?

Why does my garage door opener reverse on its own?

What preventive maintenance does my garage door opener need?

Why does my garage door opener work intermittently?

Why doesn't my garage door opener work?

Why does my garage door opener open and close by itself?

Why is my garage door opener noisy?

Most common repair guides to help fix your garage door openers

How to replace a garage door opener battery

How to replace a garage door opener wall control

How to replace a chain-drive garage door opener RPM sensor

Effective articles & videos to help repair your garage door openers

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Top questions about Sears and Sears PartsDirect

How to repair broken or damaged wires video

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