How to Replace Garage Door Springs
Safety Warning: <p>Garage door torsion springs store <strong>200+ pounds of force</strong>. This is the most dangerous DIY garage door repair.</p> <p><strong>This guide is educational only.</strong> Oregon law (ORS 701.026) requires licensed contractors for spring work.</p> <p>Need help? Call <a href="tel:541-203-7676">541-203-7676</a> for same-day service.</p>
What You'll Need
Tools
- Two 1/2" solid steel winding bars (18" long minimum) - $40
- Socket wrench set with 7/16", 1/2", 9/16" sockets
- Adjustable wrench (10-inch)
- C-clamps or locking pliers (2)
- Safety glasses (ANSI Z87.1 rated) - REQUIRED
- Leather work gloves
- Sturdy ladder (6-8 foot)
- Tape measure
- Marker or paint pen
- Vice grips
Materials
- Replacement torsion springs (BOTH springs, not just broken one) - $80-120 per pair
- Winding cones (if damaged) - $15 each
- Safety cables for extension springs (if applicable) - $12
- White lithium grease - $8
Step 1: Identify Your Spring Type and Specifications
Don't order springs yet. I know you want to get moving, but the wrong springs on this door are worse than no springs at all — they'll either snap under load or leave the door so unbalanced it becomes a 300-pound guillotine. You need four measurements from your existing springs. Torsion springs mount horizontally on a shaft above the door: • Wire diameter — typically .218" to .250" • Inside diameter — 1.75" or 2" for most residential doors • Length — measure end-to-end when relaxed, usually 18" to 30" • Wind direction — left-wind or right-wind Here's the trick: measure the UNBROKEN spring. If the left one snapped, measure the right one. Look at the end — you'll see a color mark. Red means right-wind, black means left-wind. Most residential doors run one of each. Wire diameter is sometimes stamped on the spring end in sixteenths. So "4" means 4/16" = 1/4". If there's no stamp, you'll need calipers. Can't figure it out? Snap a photo and text it to us at 541-203-7676. We'll ID your springs for free — takes us about two minutes. Beats ordering the wrong ones and waiting another week for the return.Safety: Never measure springs under tension. Disconnect the opener and secure the door first.
Pro Tip: Order high-cycle springs (25,000+ cycles) instead of standard 10,000. They cost $20 more but last 2-3x longer in Bend's extreme temperature swings.
Step 2: Disconnect the Garage Door Opener
Pull the red emergency release cord to disconnect the trolley from the door. Then unplug the opener from the wall. Both steps. Not one, both. Here's why I'm insistent about this: three years ago a guy in Redmond disconnected the release cord but left the unit plugged in. His wife hit the wall button from the kitchen, not knowing he was up on a ladder with his hands on the springs. The trolley didn't move the door — he'd disconnected it — but the noise startled him and he lost his grip on the winding bar. We finished the job. After you unplug, remove the pin or bolt connecting the opener arm to the door bracket at the top. Disconnect it completely. Quick test: try lifting the door manually a few inches. It should move freely without the opener engaging. If it catches or resists, you didn't fully disengage. Fix that before going any further.Safety: Lock out the breaker for your garage if possible. Put a note on it: "DO NOT TURN ON - WORKING ON GARAGE DOOR"
Step 3: Secure the Door in the Open Position
Most people who get hurt on this job get hurt because they tried changing springs with the door sitting on the ground. Makes sense intuitively — it's down, it's not going anywhere, right? Wrong. You need the door open. Lift the door all the way up by hand. Get someone to help you — with a broken spring, it's going to feel like it weighs twice what it should. Prop it open with 2x4s on sawhorses, or whatever sturdy support you have. The point is that door cannot come down while you're working. Once it's up, clamp vice grips onto the track just below the bottom roller on both sides. That's your insurance policy if a cable lets go or something shifts. Set your ladder up underneath the door opening — not off to the side. If the door does come down somehow, you don't want to be standing where it lands. One thing about doing this in winter around here: cold makes springs brittle. Really brittle. We've had springs snap on customers who were just trying to prop the door open. That's part of why our emergency rate goes up $75 in January and February — the job is genuinely more unpredictable in freezing temps.Pro Tip: Take a photo of the cable routing before you touch anything. You'll thank yourself later when reassembling.
Step 4: Release Tension from the Old Springs
This is the step. Right here. This is where people get hurt. Each spring has a winding cone at the end — a black metal cone with 4-6 holes. Those holes are where your winding bars go. Each hole is a quarter turn. Insert your 1/2" winding bar into the bottom hole. Both hands on the bar. Loosen the set screws on the cone a quarter turn — just barely. You're releasing pressure, not removing the screws. Now the spring wants to unwind. You control it. One quarter turn at a time. Move the bar to the next hole, let it rotate, switch bars, repeat. It's tedious. That's the point. Rushing this step is how people end up at the hospital. Count every quarter turn. Write the number on the wall with a marker if you have to. Standard 7-foot door: about 30 quarter-turns (7.5 full rotations). 8-foot door: 36 to 40 quarter-turns. You'll need this exact count later when you wind the new springs. I cannot stress this enough: if you don't have proper 1/2" solid steel winding bars — at least 18 inches long — stop right now. Screwdrivers bend. Rebar slips. Pry bars are the wrong diameter. Two hundred pounds of rotational force will rip a makeshift bar out of your hands and send it across the garage. I've seen the dents in drywall. I've seen worse than dents.Safety: NEVER use screwdrivers or weak bars. They bend or slip, and 200 lbs of force sends the bar flying into your face. Only use solid 1/2" steel winding bars.
Pro Tip: Spray the set screws with WD-40 the night before. Bend's cold winters seize these screws, making them nearly impossible to loosen without heat.
Step 5: Remove the Old Springs and Hardware
With the tension fully released, take out the set screws and pull the winding cones off the shaft. Slide the old springs off. Before you do anything else, look at the torsion shaft itself. Run your hand along it (gloves on). Feel for rust, pits, or bends. A bent shaft will chew through new springs in a year or less. We see this constantly in Sunriver vacation homes — the garage sits closed for months, moisture gets trapped, and the shaft corrodes from the inside out. Check the bearing plates on each side too. Give them a wiggle. If they're loose, tighten them now. Sloppy bearings cause uneven winding, and uneven winding causes cables to jump off drums. That's a separate headache you don't want. Hit the shaft with a wire brush and some degreaser. Fifteen years of accumulated grime makes it nearly impossible to slide new springs on. Five minutes of cleaning saves twenty minutes of frustration.Pro Tip: Save the old springs. You can bring them to our shop (Bend) and we'll verify you ordered the right size replacements before you install them. Free service - saves you a returned-springs headache.
Step 6: Install the New Springs
Slide the new springs onto the shaft. Left-wind goes on the left, right-wind on the right. The stationary cones — the ends without the winding holes — face toward the center. If you install them backward, the door won't open. It's a $100 mistake if you have to call someone to fix it, and I see it happen all the time. Stationary cone to center, winding cone to outside. Check it twice. Push the springs snug against the center bearing plate. Reinstall the anchor bracket in the center and bolt it down tight. Now the cable drums. Slide them onto each end of the shaft, outside the springs. Don't tighten the set screw yet — the drum needs to move freely for the next step. Thread the cables over the drums and down to the bottom brackets. The cable sits in the groove on the drum — one wrap clockwise from the inside out. When you're done, the cable should leave the drum and drop straight down to the bottom roller bracket. Here's where that photo from step 3 pays off. Cable routing is the number two DIY mistake after not counting your winding turns. If the cable isn't seated in the groove properly, it'll bind, fray, and snap within a few months.Safety: Double-check spring wind direction before tightening anything. Wrong installation can cause springs to shatter when wound.
Step 7: Wind the New Springs
You're loading 200-plus pounds of force into springs that are about a foot from your face. This is not the time to be thinking about what's for dinner. Insert your winding bar into the bottom hole of the winding cone. Push up and clockwise. That loads the tension. Count every single quarter-turn. Use the count from step 4, plus one extra quarter-turn. So if you unwound 30 quarter-turns, wind 31 going back on. Every 4 to 6 quarter-turns, snug the set screws a little. You don't want the cone slipping while you're winding. Don't fully tighten until you've reached your target count. It gets harder to turn as you go. That's normal — you're compressing metal. But if it feels impossibly stiff by turn 20, you bought the wrong springs. Stop. Do not force it. When you hit your target, tighten those set screws like you mean it. 30 to 40 foot-pounds. Loose set screws are the number one reason springs unwind after installation — and an unwinding spring with no winding bar controlling it is about as bad as it gets. Here's how we check tension: disconnect everything, lift the door manually. It should feel almost weightless — 10 to 15 pounds, like lifting a bag of groceries. Heavy? Add a quarter-turn to each side. Door wants to fly up on its own? Remove a quarter-turn. Fair warning on Bend weather: springs expand a bit in summer heat, contract in winter cold. A door that's perfectly balanced in July might feel heavy in December. We adjust tension seasonally for our maintenance plan customers. Something to keep in mind.Safety: Keep your face to the SIDE of the winding cone. If the bar slips, the cone spins. I've seen it remove teeth from homeowners who were staring at their work. Not kidding.
Pro Tip: Have your helper lift the door slowly after winding. Watch the cables - they should wind evenly onto the drums without bunching. Uneven winding means you'll be replacing cables in 6 months.
Step 8: Test the Door and Reconnect the Opener
Pull the vice grips off the track. Tell your helper to stand to the side, not under the door. Lower it slowly by hand. The door should hold its position anywhere you stop it. Drops fast? Under-tensioned — add quarter-turns. Shoots up? Over-tensioned — back off a quarter-turn at a time. Run the door up and down manually 10 times. Full travel each way. Listen for grinding, watch the cables wind onto the drums, feel for any spots where it binds or catches. This is your shakedown run. Now the real test: open the door to about waist height and let go. It should stay put. Not drift up, not drift down. Just hang there. That's a balanced door. Once you're satisfied, reconnect the opener arm, plug it back in, and run it through 5 full cycles. The motor shouldn't sound strained. If it's working hard, the springs still need more tension. Last thing: grab your white lithium grease and spray the full length of both springs. Hit the rollers, hinges, and tracks while you're at it. Takes five minutes and extends spring life by a third. Then set a reminder on your phone for three months out to do it again. We offer a $49 final-check service where we come out, verify your spring tension, inspect the cable routing, and hand you an inspection sheet. About 40 percent of DIYers in the Bend area take us up on it. After all the work you just did, it's cheap peace of mind.Pro Tip: Set a phone reminder for 3 months from now: "Lubricate garage door springs". Quarterly maintenance doubles spring life in Central Oregon's harsh climate.
Troubleshooting
Door drops fast when lowering
Springs are under-tensioned. Add 1/4 turn to each spring. Disconnect opener, manually test balance, then add tension incrementally until balanced.
Door shoots up when opening
Springs are over-tensioned. Remove 1/4 turn from each spring. This is less common but just as dangerous - over-tensioned springs can snap.
Door is crooked (one side higher than other)
Uneven spring tension OR one cable came off the drum. Check cables first - if one slipped off, you need to release ALL tension and rethread the cable. Never try to fix cables with springs under tension.
Springs make grinding or popping noises
Normal for brand new springs during first 10-20 cycles. The springs are settling. If it persists beyond 50 cycles, springs may be binding on the shaft - check for rust or debris.
Set screws keep loosening
You didn't tighten them enough, OR you stripped the cone holes. Use a longer Allen key for more leverage. If holes are stripped, the cone needs replacement ($15 + labor to re-tension).
Cables are loose or sagging
Springs are definitely under-tensioned. Add 1-2 full turns (4-8 quarter-turns). Cables should be taut at all times when door is closed.
One spring broke within 6 months of installation
Wrong spring spec, OR you didn't replace BOTH springs. Mixing old and new springs causes the new one to work harder and fail early. Always replace both. This is why we refuse to replace just one spring for customers - we won't put our name on a job that'll fail.
Frequently Asked Questions
Can I replace just the broken spring instead of both?
Technically yes, practically no. Here's why we always replace both at Brokentop: If one spring broke, the other is the same age and will break within 3-6 months. Then you pay for labor twice. The springs cost $80-120 for a pair. Labor is $170. Saving $40-60 on one spring means spending $170 again in a few months. We've replaced springs in over 500 Bend homes - this is the #1 regret we hear from DIYers who went the cheap route.
How long do garage door springs last in Central Oregon?
Standard 10,000-cycle springs: 5-7 years with quarterly maintenance, 3-5 years without. Bend's temperature extremes (we see -10°F to 110°F) are murder on springs. High-cycle springs (25,000-100,000 cycles): 10-15 years with maintenance. We install almost exclusively high-cycle springs now because Redmond, Sisters, and Bend customers were tired of replacing standard springs every 5 years.
What if I can't find the exact spring specifications?
Call us at 541-203-7676 or bring your old spring to our shop in Bend. We'll measure it with calipers and look up the specs in our database - free service. We stock 90% of common spring sizes for Central Oregon homes. If yours is a weird size (manufactured homes, custom doors), we can order and have it in 2-3 days from our supplier in Portland.
Is it legal to DIY garage door spring replacement in Oregon?
Gray area. Oregon law (ORS 701.026) doesn't explicitly ban homeowners from working on their own springs, but it requires licensed contractors (CCB) for "structural" work. Insurance companies interpret this differently. State Farm, Allstate, and Farmers have denied homeowner claims after DIY garage door injuries in Oregon. Your call, but get it in writing from your insurance company before attempting this.
Why do you recommend professional installation?
Liability, honestly. In 9 years, I've seen three serious injuries from DIY spring replacement in the Bend area. One guy lost two fingers when his winding bar slipped. Another took a spring to the face when it broke during installation - 47 stitches. The third had a 300-pound door fall on his leg because he didn't secure it properly. Hospital bills: $18,000, $31,000, and $12,000. Our service call: $275. You do the math.
How much does professional spring replacement cost in Bend?
Our pricing: Standard springs (10,000-cycle): $250. High-cycle springs (25,000+): $295. Emergency same-day: +$75. Two-car garage (two separate doors): Double the price. We're competitive with other licensed CCB contractors in Central Oregon. Unlicensed handymen charge $150-180 but have zero insurance - if they hurt themselves on your property, your homeowner's policy pays. Not worth it.
What tools do I absolutely need that I probably don't have?
Winding bars. Not optional. They cost $40 for a pair. You can't use screwdrivers, breaker bars, or "that metal rod in my garage". It will bend or slip, and you will get hurt. We sell winding bars at cost ($40) if you want to buy them for future maintenance. Otherwise, the $275 service call includes the right tools, the right springs, and a 1-year labor warranty.
Can cold weather in Bend affect my new springs?
Absolutely. Springs contract in cold weather, which effectively increases tension. We install springs at 75°F reference temp, then adjust for season. If you install springs yourself in January, they'll be over-tensioned in July. Springs installed in August will be under-tensioned in December. Professional trick: Install in spring or fall (moderate temps), then check tension when seasons change. We offer free tension checks for customers who bought springs from us.
Want Us to Handle This?
Licensed CCB #209697, 10+ years in Bend. Same-day service Mon–Fri when you call by 2 PM. Parts on the truck for most repairs.
Serving Bend, Redmond, Sisters, Sunriver, La Pine & all of Central Oregon