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.
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Before
AfterLiftMaster Cable & Drum Replacement: The Redmond Owner’s Guide
LiftMaster cable and drum replacement in Redmond typically runs $130-$250 installed, and we stock the common LiftMaster-compatible sizes on our trucks for same-day repair. The cable drum is the grooved wheel that sits on the torsion tube and winds the lift cable as the door opens; when it cracks, strips, or separates from its hub, the door goes crooked, jams, or drops hard on one side. Most Redmond owners notice the problem first as a loud bang from the garage, then find their door hanging lower on the left or right, or the opener straining without moving the door evenly.
Which LiftMaster Models This Applies To
LiftMaster does not manufacture its own cable drums; they source from standard hardware lines, which means the critical match is drum size and bore diameter, not a LiftMaster-specific part number. The most common fit is the 400-8 or 400-12 cast aluminum drum with a 1-inch bore, used across LiftMaster’s contractor series openers paired with 7-foot and 8-foot sectional doors. If your opener was installed between 2015 and 2022, check the drum face for a casting number; if it’s worn smooth, measure the drum height (4-inch for standard lift, 5.5-inch for high-lift) and count the cable grooves.
We carry OEM-equivalent cast aluminum drums from DDM and Prime-Line that meet the same spec as the factory hardware, plus galvanized 7×19 aircraft cable in 1/8-inch and 3/32-inch diameters. The aftermarket equivalent saves roughly $30-$50 on the part without changing fit or cycle rating. For Redmond homes near the Sammamish River basin where humidity stays elevated through October, we spec galvanized cable over standard; the coating adds years before surface rust starts fraying strands.
Signs Your LiftMaster Cable & Drum Replacement Is Failing
- The door hangs crooked when closed. One cable has slipped or the drum has cracked at its hub, letting that side of the door settle lower. The opener trolley keeps pulling, but the uneven geometry binds the door in the track.
- A loud snap or pop from the garage, then the door won’t move. The cable has broken at a fray point or the drum casting has fractured under load. The remaining cable holds one side, so the door jams diagonally in the opening.
- The opener runs but the door barely shifts. The drum has spun on the torsion tube, stripping its set-screw grip. The motor turns the shaft; the drum does not turn with it.
- Visible rust dust or broken strands on the cable. Redmond’s wet winters accelerate corrosion where the cable wraps on the drum. Frayed cables lose strength unevenly and fail without warning under full door weight.
- The drum wobbles or clicks as the door moves. The bore has wallowed out or the set screws have loosened. Eventually the drum walks sideways and the cable stacks unevenly, causing an override jam.
Before
AfterReplacement Cost & What’s Included
| Service | Redmond Price Range |
|---|---|
| Cable & drum replacement (single side) | $130-$250 |
| Cable & drum replacement (both sides) | $220-$400 |
| Emergency / after-hours surcharge | $50-$75 |
The range depends on door height (more cable for 8-foot doors), whether the torsion spring needs detensioning to access the drum, and whether both sides show matching wear. Our price includes the drum, the cable, new set screws, and rebalancing the door. We deliver a flat written price before touching anything, per Clause 1 of The Haven Standard. The work carries our 365-Day Done Right Promise. You’ll receive a documented photo record showing the failed drum and the installed replacement before we leave.
DIY or Call Us?
You can safely inspect the cable and drum with the door closed: look for rust, fraying, cracks in the drum casting, or loose set screws. Do not attempt to remove or replace a cable drum with the torsion spring under tension. The spring stores roughly 100-200 foot-pounds of torque; releasing it without proper winding bars and training risks serious injury or property damage. We’ve responded to calls in Redmond’s Education Hill area where a homeowner’s improvised repair bent the top section and stripped the opener gear.
If you see fraying or a cracked drum, stop using the door and call us at (425) 305-4847. We’ll name the part, quote the range, then get to work.
FAQs
Typically 10-15 years, but Redmond’s wet season and temperature swings shorten that to 8-12 years for doors facing west or with poor garage ventilation. Galvanized cable and annual lubrication of the drum grooves extend service life. Call (425) 305-4847 for an inspection if you’re near that range.
No. A frayed or broken 7×19 aircraft cable cannot be spliced or re-crimped to factory strength. The drum may be reusable if the bore and grooves are clean, but we replace both as a matched set to avoid a second service call. We stock both parts on our truck, so the swap is done in one visit.
Most single-side replacements take 45-75 minutes, including detensioning the spring, swapping the drum and cable, and rebalancing the door. Both sides or a high-lift door adds 30 minutes. We schedule a two-hour window and usually finish early.
Yes. We carry 1-inch bore drums in 4-inch and 5.5-inch heights, plus galvanized cable in 1/8-inch and 3/32-inch diameters, compatible with all common LiftMaster opener installations in Redmond. If your setup uses an unusual high-lift or vertical-lift drum, we source it next-day and schedule the repair once it arrives.
Servo Garage Doors Redmond is an independent service provider; we are not affiliated with LiftMaster. We also stock parts for Chamberlain and Genie openers.
Written by Marcus Deller, Owner, Servo Garage Doors Redmond at Servo Garage Doors Redmond, serving Redmond and nearby areas.