Full 25-point door and opener safety check with every visit - springs, cables, rollers, tracks, and your LiftMaster or Chamberlain opener included
You get a price before we start. It does not change when the truck arrives.
Genie Cable & Drum Replacement: The Redmond Owner’s Guide
Genie cable and drum replacement in Redmond typically runs $130-$250 installed, and we stock the common Genie-compatible sizes on our trucks for same-day repair. The cable drum is the grooved wheel that sits on the torsion tube and manages cable tension as the door opens and closes; when it cracks or the cable frays, the door usually jams, drops unevenly, or hangs at an angle. We see this failure most often in Redmond homes built between 2010 and 2020 where the original Genie hardware has cycled through fifteen thousand or more openings.
Which Genie Models This Applies To
Genie has used several cable drum designs across its opener lines, and the drum itself is paired to the door’s weight and height, not just the opener model. The most common setup we encounter in Redmond uses a 400-8 or 400-12 cast aluminum drum for standard 7-foot or 8-foot sectional doors, typically paired with Genie screw-drive or chain-drive openers from the IntelliG, ReliaG, or ChainLift series. The critical measurement is the drum’s bore diameter, which must match your torsion tube exactly, usually 1 inch or 1.25 inches.
To identify your part, check the label on the opener rail or motor housing for the model prefix, then measure the drum’s width and count the cable grooves. OEM Genie drums run higher and carry the Genie part number stamped on the casting. We also install quality aftermarket equivalents from DDM and Prime-Line that meet the same specs at a lower parts cost. The aftermarket option makes sense for most Redmond homeowners unless you’re preserving warranty coverage on a newer Genie system. We carry both on the truck and will show you the difference before quoting.
Signs Your Genie Cable & Drum Replacement Is Failing

- The door hangs crooked or one side drops faster than the other. This usually means one cable has slipped off its drum groove or the drum itself has developed a flat spot where the cable no longer seats properly. The uneven pull puts stress on the opener carriage and can bend the top section of the door if you keep running it.
- You hear a rhythmic thumping or slapping sound during opening. A frayed cable is catching and releasing against the drum flange, or the drum has a crack that lets the cable hop grooves. Either way, the cable is degrading fast and will likely snap within the next few dozen cycles.
- The cable looks like a bottle brush or has broken strands visible near the bottom bracket. Cables fatigue at the loop where they attach to the bottom fixture, and Redmond’s wet winters accelerate surface corrosion that works into the strands. Once you see three or more broken wires in a one-inch span, replacement is past due.
- The drum wobbles on the torsion tube or you see aluminum dust below the header. The drum’s set screws have loosened or the bore has wallowed out from years of torque transfer. A spinning drum damages the tube surface and makes future alignment difficult.
- The door won’t stay open or slams hard in the last foot of travel. The cable has stretched unevenly or slipped, so the spring torque isn’t translating to the door evenly. The opener’s force settings may compensate temporarily, but they’re masking a mechanical failure that gets more expensive the longer you wait.
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AfterReplacement Cost & What’s Included
| Service | Price Range |
|---|---|
| Genie cable replacement (single) | $130-$190 |
| Genie cable replacement (pair, recommended) | $160-$250 |
| Drum replacement (each, with cable) | $180-$250 |
| Drum and cable pair, both sides | $220-$340 |
These are installed prices for Redmond, with parts and labor itemized on the written scope you receive before we start. The range depends on door height (longer cables cost more), whether the drum bore needs reaming for a damaged torsion tube, and if we find worn bottom brackets or pulleys that should be addressed at the same time. We don’t add to the agreed price once work begins. Clause 1 of The Haven Standard requires it.
Every cable and drum replacement carries our 365-Day Done Right Promise. If the door drifts, the cable slips, or anything about the install isn’t right, we return and make it right. The photo record from your visit documents the drum part number, the cable gauge, and the torque setting we left the spring at, so there’s no guessing if you need us back.
DIY or Call Us?

There’s a safe middle ground here. You can inspect the cable for fraying and check whether the drum set screws are tight using a wrench with the door fully closed and clamped. What you should not do is loosen the torsion spring to remove a drum or cable yourself. The spring stores enough torque to cause serious injury if it unwinds unexpectedly, and Genie systems often use a winding cone design that requires specific bars and technique.
We’ve had Redmond homeowners call us after a DIY attempt left the door stuck half-open with a cable off both drums and the spring partially unwound. That scenario takes longer to fix than a straightforward replacement and costs more because we have to re-tension and balance the whole system. Name the part, quote the range, then get to work. That’s how we handle it, and it’s usually the faster path.
If your door is stuck open or the cable is hanging loose, call (425) 305-4847. We answer live, dispatch a technician with the right Genie-compatible parts, and send an on-the-way text with a name and photo.
FAQs
In Redmond’s climate, expect 8 to 12 years or roughly 12,000 to 15,000 cycles for standard galvanized cables, with drums often outlasting them. The seasonal moisture from the Sammamish Valley fog pattern accelerates surface corrosion on cables, especially on north-facing garage doors that don’t dry quickly. Annual lubrication of the cable and drum groove extends life by reducing friction wear. Call (425) 305-4847 if you’re unsure of your hardware age; we can date it from the part markings during a free look.
No. A frayed garage door cable must be replaced; splicing or welding compromises the rated breaking strength and creates a liability neither we nor any qualified technician will accept. The cable is a single-use safety component, and any weakness in the strand bundle can cascade to sudden failure under load. We replace cables in matched pairs even if only one looks bad, because uneven stretch between old and new cables causes immediate tracking problems. Call (425) 305-4847 for a written quote on paired replacement.
Most replacements take 45 to 90 minutes from truck arrival to final balance check, assuming the torsion spring and bottom brackets are in good condition. The actual drum and cable swap is straightforward; the time goes into verifying door balance, testing the opener’s force settings, and documenting the work with the photo record Clause 4 requires. If we find a worn bearing plate or bent bottom bracket, we’ll show you the photo and quote the additional work before proceeding.
Yes. We carry 1-inch and 1.25-inch bore drums, 7-foot and 8-foot cable sets in standard and high-lift configurations, and the common Genie-compatible hardware for doors up to 18 feet wide. For less common setups, we source overnight from our Seattle-area supplier. We also stock LiftMaster and Chamberlain compatible parts on the same trucks, since many Redmond homes have mixed brand setups. Call (425) 305-4847 with your door height and opener model; we’ll confirm we have your match before dispatching.
Written by Marcus Deller, Owner, Servo Garage Doors Redmond at Servo Garage Doors Redmond, serving Redmond and nearby areas.






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