Amarr Cable & Drum Replacement Nationwide

Amarr Cable & Drum Replacement: The Boerne Owner’s Guide

Amarr cable and drum replacement in Boerne typically runs $130-$250 installed, and we stock the common Amarr sizes on every truck. Most jobs are finished in under an hour. You’ll usually notice the problem when the door hangs crooked, cables look frayed, or the drum has slipped and the door won’t sit level in the frame.

Call (830) 365-0775

We see this failure a lot in Boerne’s older Hill Country homes, especially after a spring breaks and the sudden load shift chews up the cable or strips the drum grooves. The door might still move, but it’s fighting itself the whole way. That’s when the hardware starts eating itself.

Which Amarr Models This Applies To

Amarr has used several cable and drum configurations across their product lines, and getting the match right matters. The Classica collection with its thicker overlay panels needs a heavier-gauge cable than the Stratford or Olympus lines. Heritage and Lincoln series doors from the 2000s often shipped with a 12-inch diameter drum that Amarr later superseded, so we cross-reference the serial tag before pulling parts.

To identify what you need, check the sticker on the interior side of the door panel or the end of the torsion tube. You’re looking for a model prefix like STR, CLA, or LIN followed by width and height digits. If the sticker’s gone, we measure drum diameter, cable length, and loop fitting type on site. Mainspring Garage Door Co. is an independent service provider, not affiliated with Amarr, but we carry both OEM Amarr drums and quality aftermarket equivalents from DDM and Garage Door Supply Company. The aftermarket parts meet the same load specs and carry the same 90-day coverage from us, at a lower parts cost. For doors still under Amarr’s original warranty, OEM preserves that coverage.

Signs Your Amarr Cable & Drum Replacement Is Failing

• The door sits crooked when closed. One cable has stretched or one drum has slipped on the torsion tube, so the left and right sides of the door travel different distances. In Boerne, we see this most often on south-facing doors where daily thermal expansion loosens the set screws.
• Visible fraying or broken strands on the cable. The 7×19 galvanized aircraft cable Amarr uses will eventually fatigue at the bottom loop fitting. Once you spot three or more broken wires, the cable is living on borrowed time. We’ve replaced cables in Fair Oaks Ranch that looked fine at 10 a.m. and snapped by 4 p.m.
• A grinding or clicking sound during opening. The drum grooves are worn and the cable is seating poorly, causing it to skip and chatter against the drum flange. This wears both parts faster and can throw the cable off the drum entirely.
• The door falls hard or slams shut. A stripped drum no longer maintains proper cable wrap geometry, so the spring torque doesn’t translate smoothly to the door. The cable may also be slipping through a damaged bottom bracket.
• Cable is off the drum and wrapped around the torsion tube. This usually means the drum’s retaining collar has cracked or the set screw has backed out. It’s a full replacement situation, not a simple re-spooling, because the cable will have kinked where it crossed itself.

Replacement Cost & What’s Included

The range depends on whether we’re replacing one side or both, OEM versus aftermarket parts, and whether the torsion spring also needs attention. We quote the flat price before the wrench comes out. That price includes the part, labor, disposal of the old hardware, and our 90-Day Done Right Promise in writing. If the work is not right, we return at no charge. No paperwork fight, no dispute process.

Seniors and veterans receive a permanent 5% discount. Repairs over $250 qualify for $50 off.

DIY or Call Us?

There’s a safe middle ground here. You can visually inspect the cables and drums from inside the garage with the door closed. Look for fraying, rust blooming on the cable, or a drum that looks tilted on the tube. You can also check whether the door hangs level in the opening. What you should not do is loosen the set screws on the torsion tube or try to unwind spring tension to free a jammed cable. The stored energy in a standard torsion spring can cause serious injury if released incorrectly.

If the cable has come off the drum but the spring is still wound, the safest move is to leave the door alone and call us. We carry Amarr-compatible cables and drums on every truck, and most replacements in Boerne are completed in a single visit. Call (830) 365-0775 and a live person will answer, any hour.

FAQs