2. What you’ll need
• Step ladder
• Socket wrench
• Channel lock pliers
• Screwdriver
3. Step 1: Safety First
• Before starting any work, first
unplug the garage door opener
• Make sure you wear safety glasses or
sun glasses to protect your eyes
4. Step 2: Inspection
• Examine the door springs to check
for wear.
Worn SpringGood Spring: Even
Coil Separation
5. Step 3: Replace Door Spring
• First remove braided wire from
spring hook end
• Next, Unhook Spring
6. Step 3 (cont.): Replace Door Spring
• Take apart door spring pulley using
channel lock pliers and socket
wrench
• Remove braided wire from pulley
end of door frame
7. Step 3 (cont.): Replace Door Spring
• Attach new spring hook end first
• Then attach pulley and feed new
braided wire through spring
• Tie braided wire on hook end first
• Then tie spring pulley end
8. Step 4: Remove Trolley Attachment
• Remove trolley attachment from
door using channel lock pliers and
socket wrench
Remove these
two screws
9. Step 5: Remove Opener Power Wires
• Remove opener power wires with a
screwdriver
Loosen these
screws
10. Step 6: Remove Opener Support Bolts
• Position ladder under opener and
remove support bolts using channel
lock pliers and socket wrench
Remove these
bolts
11. Step 7: Remove chain
• Remove chain housing
• Loose chain by loosening tension
screw, then remove chain from drive
gear
Chain
housing
Chain
tensioner
screws
12. Step 8: Replace Opener
• Remove bolts from opener to
detach opener from trolley bar
• Attach new opener to trolley bar
Remove these
bolts
13. Step 9: Tighten Chain
• Place chain around drive gear and
tighten chain tensioner screw
Chain
tensioner
screws
14. Step 10: Mount New Opener
• Raise new opener and attach to
support brackets with bolts.
• Tighten bolts with socket wrench
and channel lock pliers
• Re-attach trolley attachment
Tighten these
bolts
15. Step 11: Power New Opener
• Attach power wires to new opener
• Plug in new opener
• Test out new opener and adjust
according to manufacturer
directions
16. For More Information
• For more information, see manufacture’s website
• Many user manuals are available online