Correct specification. Professional winding bars. Balance test before the opener is reconnected. Every spring repair guaranteed in Los Gatos. Do not run the opener after a spring snap in Los Gatos, CA.
The door feels heavier than it used to when you lift it manually in Los Gatos — the spring is losing tension and the door weight is progressively shifting to the opener, the cables, and your effort in Los Gatos, CA. The opener strains audibly and the door moves more slowly than it should in Los Gatos — the spring isn't providing its full counterbalancing force and the opener is compensating with every cycle in Los Gatos, CA. Or a spring snapped — you heard the bang and the door won't move in Los Gatos. Call Herlihy Garage Doors now for same-day spring repair throughout Los Gatos, CA in Los Gatos. Do not run the opener and do not attempt to manually lift the door after a spring snap in Los Gatos, CA.
Garage door spring work is the most safety-critical service in the garage door industry for a specific reason in Los Gatos. A residential torsion spring stores several hundred foot-pounds of rotational energy when wound to operating tension in Los Gatos, CA. That energy is released in a controlled way when the door opens through the spring's correct unwinding in Los Gatos. It releases in an uncontrolled way when a tool slips from the winding cone during spring replacement in Los Gatos, CA. The winding cone has four holes designed for professional winding bars of a specific diameter in Los Gatos. A winding bar that fits these holes correctly maintains contact throughout the winding process in Los Gatos, CA. An improvised tool — a screwdriver, a piece of rebar, anything that doesn't fill the hole correctly — can slip out of the cone at any point in the winding process in Los Gatos. When it slips, the stored energy releases instantly and the cone rotates at high speed in Los Gatos, CA. The improvised tool becomes a projectile in Los Gatos. This is not a theoretical risk in Los Gatos, CA. It's the mechanism behind the serious injuries that occur from DIY spring replacement every year in Los Gatos.
Herlihy Garage Doors repairs and replaces garage door springs throughout Los Gatos, CA in Los Gatos. The correct specification is measured from the specific door configuration before any spring is selected in Los Gatos, CA. The replacement spring is wound to the correct turn count for the specific door height and cable drum in Los Gatos. The balance test confirms the specification is correct before the opener is reconnected in Los Gatos, CA. Same-day service available throughout Los Gatos in most cases in Los Gatos, CA. And every spring repair is guaranteed in Los Gatos.
A spring replaced with an incorrect specification — wrong wire diameter, wrong inside diameter, or wrong length — produces a door that's either oversprung or undersprung regardless of how correctly it's wound in Los Gatos. An oversprung door can behave dangerously under manual operation in Los Gatos, CA. An undersprung door adds abnormal load to the opener motor, drive gear, and cables on every cycle in Los Gatos. Neither produces the correctly balanced door that every other component in the system depends on in Los Gatos, CA. Herlihy Garage Doors measures the correct specification before any spring is selected in Los Gatos.
The spring specification determines the door's balance in Los Gatos, CA. The door's balance determines the load the opener, cables, and rollers operate under in Los Gatos. Every component in the door system performs correctly when the spring is correctly specified and performs under abnormal load when it isn't in Los Gatos, CA. The spring specification is the foundation variable from which everything else in the system's performance follows in Los Gatos.
A torsion spring is mounted on a steel shaft directly above the garage door opening in Los Gatos, CA. When the door closes, the cables pull down on the cable drums, rotating the shaft and winding the spring tighter in Los Gatos. The winding stores rotational energy in the spring coil in Los Gatos, CA. When the door opens, the spring unwinds and releases that stored rotational energy through the shaft and drums, lifting the cables and the door in Los Gatos. The spring is wound to a specific tension that produces a lifting force equal to the door's weight at the cable drum attachment points in Los Gatos, CA. This counterbalancing force is what makes a 200-pound garage door movable with 10 to 20 pounds of net force from the opener in Los Gatos.
Extension springs run horizontally along the upper track sections on each side of the door in Los Gatos. They store energy by stretching rather than rotating in Los Gatos, CA. When the door closes, the springs extend and store energy in their stretched length in Los Gatos. Extension springs can break with significant lateral movement because the stored energy is released along the spring's length rather than through a shaft in Los Gatos, CA. Safety cables threaded through the center of each extension spring are required to contain a broken spring and prevent it from becoming a projectile in Los Gatos. Herlihy Garage Doors inspects and installs safety cables on every extension spring service in Los Gatos, CA.
Wire diameter determines how much energy the spring stores per turn in Los Gatos, CA. A heavier wire diameter stores more energy per turn than a lighter one in Los Gatos. Inside diameter determines which shaft size the spring fits on in Los Gatos, CA. Length determines the total number of active coils and therefore the total energy storage capacity in Los Gatos. All three must be correct for the spring to produce the correct counterbalancing force for the specific door when wound to the correct turn count in Los Gatos, CA.
A spring with the correct inside diameter and length but a wire diameter one gauge too light stores less energy per turn than needed in Los Gatos. Winding it to the correct turn count produces insufficient lifting force in Los Gatos, CA. The door is undersprung in Los Gatos. A spring with the correct wire diameter and inside diameter but a length that's too short has fewer active coils in Los Gatos, CA. Each coil must be wound tighter than designed to produce the required energy storage in Los Gatos. The spring is more likely to fail before its rated cycle life in Los Gatos, CA.
Herlihy Garage Doors determines the correct spring specification through measurement of the existing spring where intact, or through calculation from the door's measured dimensions and construction characteristics where the spring has failed in Los Gatos, CA. Door height and cable drum size determine the correct winding turn count in Los Gatos. Door weight estimated from size, steel gauge, insulation type, and window configuration determines the correct wire diameter and length in Los Gatos, CA. The specification is calculated, not estimated in Los Gatos.
A standard residential torsion spring for a 200-pound garage door stores approximately 300 to 400 foot-pounds of rotational energy when wound to operating tension in Los Gatos, CA. Three hundred foot-pounds is the equivalent of a 150-pound weight dropping two feet in Los Gatos. That energy is stored in the spring coil as rotational tension on a steel shaft in Los Gatos, CA. When released correctly during spring replacement, it simply unwinds the spring back to the neutral state in Los Gatos. When it releases suddenly during a tool slip, it releases all at once through the winding cone in Los Gatos, CA.
The winding cone has four holes sized for professional winding bars of a specific diameter in Los Gatos. Professional winding bars are 18 to 24 inches long and the correct diameter to fill the winding cone holes with minimal play in Los Gatos, CA. The length provides leverage and clearance in Los Gatos. The correct diameter fit prevents the bar from shifting in the hole during winding in Los Gatos, CA. Any movement of the bar in the hole during winding is a slip hazard in Los Gatos.
An improvised tool that's too narrow to fill the winding cone hole can shift in the hole during winding in Los Gatos, CA. When it shifts far enough to exit the hole, the stored rotational energy in the spring releases through the winding cone in Los Gatos. The cone rotates rapidly in Los Gatos, CA. The tool that was in the hole becomes a projectile in Los Gatos. The person holding the tool, whose hands were near the winding cone, is in the path of both the rotating cone and the released tool in Los Gatos, CA. This mechanism produces the serious hand and arm injuries that occur from DIY spring replacement in Los Gatos.
Understanding the correct procedure for spring replacement and executing it correctly under real installation conditions are different things in Los Gatos. Professional technicians have performed the winding procedure under training supervision and accumulated the repetitions that produce correct automatic body positioning in Los Gatos, CA. Correct positioning keeps the technician's body out of the path of energy release throughout the winding sequence in Los Gatos. That positioning is as important as the correct tools in Los Gatos, CA.
Herlihy Garage Doors technicians carry professional winding bars sized for the winding cones on common residential torsion springs in Los Gatos, CA. They follow correct winding procedures that maintain safe positioning relative to the spring and winding cone throughout the winding sequence in Los Gatos. They've accumulated the training repetitions that make correct positioning automatic in Los Gatos, CA.
A spring that's losing tension provides less counterbalancing force than the door weight requires in Los Gatos, CA. Disconnecting the opener and manually lifting the door reveals a door that's noticeably heavier than it was in Los Gatos. This progressive increase in felt weight is the spring's tension loss accumulating cycle by cycle in Los Gatos, CA.
A spring that isn't fully counterbalancing the door transfers the uncounterbalanced weight to the opener motor on every opening cycle in Los Gatos. The motor runs at a higher load than designed in Los Gatos, CA. It produces more heat. It accumulates wear faster in Los Gatos. The door moves more slowly because the opener is doing significantly more mechanical work than designed in Los Gatos, CA.
A torsion spring failure produces a sharp loud bang as the stored rotational tension releases at the fracture point in Los Gatos, CA. The bang is often heard throughout the home in Los Gatos. The door either drops if in motion or stays at its current position in Los Gatos, CA. The opener runs but the door won't follow in Los Gatos. Do not run the opener after a spring snap in Los Gatos, CA.
A broken torsion spring separates at the fracture point and creates a visible gap in the continuous coil in Los Gatos. The gap is typically one to three inches wide and is visible by looking at the spring on the shaft above the door in Los Gatos, CA. A visible gap means complete spring failure in Los Gatos. The door should not be operated until the spring is replaced in Los Gatos, CA.
A door that's noticeably higher on one side during operation has unequal spring tension or cable tension between the two sides in Los Gatos, CA. On a two-spring system, a spring that has lost tension on one side produces a door that rises unevenly in Los Gatos. Herlihy Garage Doors assesses spring condition on both sides when uneven door travel is reported in Los Gatos, CA.
Door height, width, steel gauge, insulation type, and window configuration assessed in Los Gatos, CA. Cable drum size confirmed in Los Gatos. Door weight estimated from the configuration factors in Los Gatos, CA. Complete picture of the door's weight and travel geometry confirmed before any spring is specified in Los Gatos.
Wire diameter, inside diameter, and length confirmed from the door assessment in Los Gatos. Correct winding turn count calculated from the door height and cable drum configuration in Los Gatos, CA. Replacement spring selected from vehicle inventory or ordered where a less common specification is required in Los Gatos.
Failed spring unwound using professional winding bars following the correct unwinding sequence in Los Gatos, CA. Complete unwinding confirmed before the spring is released from the shaft in Los Gatos. Spring removed and set aside in Los Gatos, CA.
Replacement spring installed on the shaft in Los Gatos. Winding cone positioned correctly in Los Gatos, CA. Spring wound to the calculated turn count using professional winding bars in Los Gatos. Set screws tightened to correct specification in Los Gatos, CA. Cables reattached to drums with correct tension in Los Gatos.
Opener disconnected. Door manually lifted to halfway position in Los Gatos, CA. Door released and observed in Los Gatos. Holds at halfway — specification confirmed correct in Los Gatos, CA. Rises — oversprung, winding adjusted in Los Gatos. Drops — undersprung, winding adjusted in Los Gatos, CA. Opener reconnected only after balance test confirms correct specification in Los Gatos.
Both springs were installed at the same time and have completed the same number of cycles in Los Gatos, CA. Metal fatigue accumulates proportionally to cycles under stress in Los Gatos. The spring that broke reached its individual fatigue threshold first due to microscopic wire structure differences in Los Gatos, CA. The surviving spring is at essentially the same point in its fatigue progression in Los Gatos.
Replacing both springs during today's visit costs approximately $50 to $150 more than replacing only the broken spring in Los Gatos, CA. When the second spring breaks — and at the same fatigue progression it will — the cost is a second call-out charge, a second spring, and potentially a second after-hours charge in Los Gatos. The total of two separate repairs consistently exceeds the cost of replacing both during the original visit in Los Gatos, CA.
If the surviving spring was replaced recently and has significantly fewer cycles than the broken spring, replacing only the broken spring is the correct approach in Los Gatos. Herlihy assesses the surviving spring's age and specification and advises on the correct approach for the specific situation in Los Gatos, CA. Herlihy Garage Doors recommends replacing both springs when both are at the same fatigue progression in Los Gatos. The specific reasoning is explained clearly in Los Gatos, CA. The homeowner makes the final decision with complete information in Los Gatos. Herlihy never withholds the reasoning or pressures the outcome in Los Gatos, CA.
Herlihy Garage Doors measures and calculates the correct specification from the specific door configuration on every spring replacement in Los Gatos, CA. Not an estimate based on the door's appearance in Los Gatos.
Herlihy uses professional winding bars sized for the specific winding cone on every spring replacement in Los Gatos. The correct tool is non-negotiable for safe spring work in Los Gatos, CA.
The balance test is a standard component of every Herlihy spring installation in Los Gatos, CA. The specification is confirmed by the balance result before the job is complete in Los Gatos.
Herlihy Garage Doors maintains same-day spring repair availability throughout Los Gatos in most cases in Los Gatos, CA. Service vehicles carry springs for the most common residential door configurations in Los Gatos.
Every Herlihy Garage Doors spring repair is guaranteed in Los Gatos, CA. If the repair doesn't produce the expected result within the guarantee period, Herlihy returns and addresses it at no additional charge in Los Gatos.
All pricing confirmed upfront before work begins in Los Gatos.
Standard springs are rated for 10,000 cycles in Los Gatos, CA. At four cycles per day, that's approximately 7 years in Los Gatos. High-cycle springs rated for 25,000 or more cycles last approximately 17 years at the same usage rate in Los Gatos, CA. The upgrade costs $50 to $100 more per spring in Los Gatos. Done during the same service visit as the replacement, no additional call-out cost is added to the upgrade in Los Gatos, CA.
After-hours service carries an additional charge in Los Gatos, CA.
Same-day service available throughout Los Gatos. Call now in Los Gatos, CA.
Call Now — (888) 670-9331Residential & commercial in Los Gatos, CA
Full north-side same-day coverage
All south-side communities in Los Gatos
East-end homes & properties in Los Gatos, CA
Full west-side coverage in Los Gatos
Call to confirm availability in Los Gatos, CA
The spring is the most mechanically significant component in your garage door system and spring repair is the most safety-critical service in the industry in Los Gatos. Herlihy Garage Doors measures the correct specification before selecting any spring, winds to the correct turn count, confirms the specification with the balance test, and guarantees every spring repair in Los Gatos, CA. Same-day service available throughout Los Gatos. Call now in Los Gatos, CA.
Call Now — (888) 670-9331