A practical field guide to brake dragging, abnormal noise, uneven release, brake overheating, unintended movement and brake monitoring faults
For elevator technicians, maintenance companies, service engineers and elevator contractors, and OEM/component buyers.
Quick Answer: How Do You Troubleshoot an Elevator Brake?
An elevator brake should be treated as a safety-critical system, not simply as a mechanical component to be adjusted for smoother operation.
When troubleshooting a traction elevator brake, start with the mechanical condition of the brake assembly, then verify the electrical supply and brake-release circuit, followed by the brake monitoring/feedback system and the coordination between the brake and the drive system.
A typical diagnostic sequence is:
Mechanical inspection → Brake release verification → Electrical checks → Brake feedback → Drive/brake timing → Functional testing
Check the brake shoes, air gap or release clearance specified by the manufacturer, armature movement, pins, springs, friction surfaces and brake wheel/drum condition. Then verify the brake coil circuit, rectifier or power supply, release voltage/current where applicable, and brake monitoring signals.
Only use adjustment values and testing procedures specified for the particular brake, motor, controller and elevator installation.
Never increase the brake release clearance, reduce spring force, modify brake timing or bypass a brake monitoring circuit simply to eliminate a fault. Incorrect adjustment can compromise the stopping and holding function of the elevator.
Elevator Brake Troubleshooting at a Glance
| Symptom | First Check | Possible Causes | Diagnostic Direction |
|---|---|---|---|
| Brake dragging during travel | Brake release | Insufficient release, excessive friction, mechanical binding | Inspect brake mechanism and release condition |
| Loud brake impact | Release/closing movement | Worn damping elements, excessive movement, incorrect timing | Check mechanical movement and timing |
| One side does not release | Both brake arms/shoes | Binding, uneven adjustment, coil problem | Compare both sides |
| Brake overheats | Dragging / electrical condition | Partial release, excessive friction, abnormal coil operation | Check mechanical and electrical causes |
| Car moves after stopping | Brake holding function | Brake wear, contamination, adjustment or control issue | Remove from service and investigate |
| Car shakes at startup | Brake release timing | Brake not fully released before torque develops | Check brake/drive coordination |
| Brake does not release | Coil and supply circuit | Coil failure, rectifier/power issue, mechanical seizure | Check electrical and mechanical release |
| Brake lining wears rapidly | Contact pattern | Dragging, uneven contact, brake wheel condition | Inspect alignment and friction surfaces |
| Brake monitor reports fault | Feedback switch/sensor | Misalignment, wiring, switch failure | Verify actual brake movement vs feedback |
| Brake fault occurs intermittently | Complete circuit | Thermal, wiring, mechanical or feedback instability | Reproduce and trace the fault chain |
This table is deliberately conservative: the symptom does not automatically identify the failed component.
1. Why Is My Elevator Brake Dragging During Travel?
Symptoms
The elevator operates with abnormal friction or noise. Depending on the severity, the motor may appear to be under excessive load and the brake assembly may become unusually warm.
Likely Causes
Common possibilities include:
- Brake shoes not fully releasing
- Incorrect release clearance
- Armature or brake mechanism binding
- Contaminated or damaged friction surfaces
- Uneven adjustment between the two sides
- Insufficient brake release force
- Electrical supply or rectifier problems
What Should You Check First?
Do not immediately increase the brake clearance.
First determine whether the brake actually reaches its specified fully released position.
Inspect:
- Brake arm movement
- Armature movement
- Manufacturer-specified release clearance
- Brake shoe condition
- Return springs
- Pins and pivots
- Brake wheel/drum surface
- Coil and release circuit
Corrective Action
Correct the mechanical or electrical cause according to the brake manufacturer's service procedure.
The objective is not simply to create a larger gap. The objective is to ensure that the brake releases completely when commanded and applies reliably when de-energized.
2. Why Does My Elevator Brake Make a Loud Clicking or Impact Noise?
Symptoms
A pronounced clicking, knocking or impact sound occurs when the elevator starts or stops.
Likely Causes
Possible causes include:
- Worn damping components
- Excessive mechanical movement
- Loose brake hardware
- Armature movement that is too abrupt
- Incorrect brake release/closing timing
- Mechanical wear in the brake assembly
What Should You Check First?
Identify whether the noise occurs:
- During brake release
- During brake application
- At the moment the motor starts
- At the moment the elevator stops
This distinction is useful because mechanical impact and electrical timing are different failure paths.
Corrective Action
Inspect the brake mechanism, damping components, fasteners and movement limits.
Then verify brake/drive timing against the manufacturer's specified sequence.
Avoid modifying timing simply to make the brake quieter. Safety-related stopping performance takes priority over noise reduction.
3. Why Does One Side of My Elevator Brake Not Release?
Symptoms
One brake arm or shoe appears to release while the opposite side remains partially applied or moves differently.
Possible consequences include:
- Brake dragging
- Uneven friction
- Abnormal noise
- Uneven lining wear
- Unstable brake release
Likely Causes
- Mechanical binding
- Corroded or contaminated pins
- Uneven adjustment
- Weak or damaged spring
- Uneven armature movement
- Coil or magnetic force problem
- Mechanical wear
What Should You Check First?
Compare both sides.
Check:
- Movement
- Release position
- Clearance
- Spring condition
- Pin and pivot condition
- Brake shoe contact
- Coil operation
Corrective Action
Correct the mechanical cause first.
If the brake uses independent release mechanisms or coils, verify each side according to the manufacturer's test procedure.
Do not assume that adjusting the stationary side alone will restore balanced braking.
4. Why Is My Elevator Brake Overheating?
Symptoms
The brake assembly or coil becomes unusually hot during operation or after repeated cycles.
Likely Causes
Two broad categories should be considered:
Mechanical heating
- Brake dragging
- Partial release
- Excessive friction
- Misalignment
- Contaminated friction surfaces
Electrical heating
- Incorrect coil supply
- Abnormal voltage/current
- Rectifier problem
- Coil deterioration
- Incorrect electrical configuration
What Should You Check First?
Determine whether the brake is mechanically releasing completely.
Then verify the electrical characteristics against the brake manufacturer's specifications.
Corrective Action
Do not treat overheating as a normal operating condition.
Correct the underlying mechanical or electrical cause before returning the elevator to normal service.
5. Why Does My Elevator Move Slightly After Stopping?
Symptoms
The car appears to move slightly after the stop command or shows unexpected movement before the brake fully holds.
This is a safety-critical symptom.
Possible Causes
- Brake not applying correctly
- Brake lining wear
- Contaminated friction surfaces
- Incorrect mechanical adjustment
- Brake application timing problem
- Drive/brake coordination issue
- Brake monitoring or control fault
What Should You Check First?
Do not continue normal passenger operation simply to observe the problem repeatedly.
The brake's ability to stop and hold the elevator must be verified using the applicable manufacturer's procedure, inspection requirements and local code.
Corrective Action
Remove the elevator from service where required by the applicable procedure and investigate:
- Brake mechanical condition
- Friction surfaces
- Brake application
- Brake monitoring
- Drive/brake sequence
- Applicable safety circuits
A suspected holding or stopping failure should never be “fixed” by simply tightening the brake without determining the cause.
6. Why Does My Elevator Shake When Starting?
Symptoms
The elevator produces a noticeable jerk, vibration or hesitation immediately after the start command.
Likely Causes
A common diagnostic area is the coordination between:
Brake release → Motor torque → Elevator acceleration
Possible causes include:
- Brake has not fully released
- Brake release is too slow
- Drive torque develops before brake release is complete
- Mechanical brake resistance remains
- Incorrect brake/drive timing
What Should You Check First?
Observe the sequence of events:
- Brake release command
- Brake reaches released position
- Drive develops starting torque
- Elevator begins movement
The exact timing values are installation- and manufacturer-specific.
Corrective Action
Verify the brake/drive sequence against the manufacturer's commissioning procedure.
Do not copy delay values from another elevator simply because the motor or brake appears similar.
7. Why Does My Elevator Brake Sometimes Fail to Apply?
Symptoms
The brake occasionally does not appear to close correctly after stopping.
This is a potentially serious safety issue.
Likely Causes
- Mechanical binding
- Weak or damaged springs
- Foreign material in the mechanism
- Incorrect adjustment
- Brake coil/control problem
- Brake monitoring or control circuit fault
What Should You Check First?
Inspect the mechanical return of the brake and verify that the brake reaches its specified applied position.
Then verify the electrical/control sequence.
Corrective Action
The elevator should not be returned to normal service until the brake's stopping and holding function has been properly verified.
Follow the manufacturer's brake inspection and testing procedure and the applicable local safety requirements.
8. Why Won't My Elevator Brake Release?
Symptoms
The motor is commanded to run, but the brake remains applied and the controller prevents the elevator from moving.
Likely Causes
Possible causes include:
- Open or failed brake coil
- Incorrect supply voltage
- Rectifier or brake power module failure
- Loose connection
- Faulty brake relay/contact
- Mechanical seizure
- Armature unable to move
- Brake monitoring circuit fault
What Should You Check First?
Separate the diagnosis into two paths:
Electrical release
Check:
- Brake supply
- Coil continuity where applicable
- Rectifier/power module
- Wiring
- Connectors
- Control output
Mechanical release
Check:
- Armature movement
- Pins and pivots
- Springs
- Brake mechanism
- Contamination or corrosion
Corrective Action
A brake that cannot release should not be forced open mechanically as a workaround.
Identify whether the failure is electrical or mechanical and repair it according to the manufacturer's procedure.
9. Why Is My Elevator Brake Lining Wearing Unevenly or Too Quickly?
Symptoms
New brake linings wear rapidly, show one-sided wear or develop an uneven contact pattern.
Likely Causes
- Brake dragging
- Uneven release
- Incorrect alignment
- Uneven pressure distribution
- Brake wheel/drum surface condition
- Excessive operating cycles
- Incorrect brake adjustment
What Should You Check First?
Look at the wear pattern, not only the remaining lining thickness.
Compare:
- Left/right wear
- Inner/outer contact
- Brake shoe position
- Brake wheel/drum surface
- Release movement
Corrective Action
Correct the cause of uneven contact before installing another set of brake linings.
Replacing the lining without correcting the underlying brake condition often results in premature repeat failure.
10. Why Does My Elevator Brake Monitoring Switch Keep Reporting a Fault?
Symptoms
The brake appears to operate normally, but the controller intermittently reports a brake monitoring fault.
Likely Causes
- Monitoring switch misalignment
- Incorrect actuator position
- Switch travel outside the specified range
- Loose wiring
- Oxidized or damaged contacts
- Sensor failure
- Actual incomplete brake release or application
What Should You Check First?
Do not assume that the monitoring switch is defective.
Compare:
Actual brake movement
with
Brake monitoring feedback
If the feedback says “released” while the brake is not actually released, the problem may be mechanical.
If the brake is operating correctly but the feedback is incorrect, investigate the switch, sensor, wiring and adjustment.
Corrective Action
Correct the feedback system according to the manufacturer's specified adjustment and testing procedure.
Never bypass a brake monitoring circuit to keep an elevator in service.
11. How Should an Elevator Brake Be Troubleshot?
For a safety-critical brake, use a controlled diagnostic sequence.
Step 1 — Secure the Elevator
Follow the applicable lockout/tagout, isolation and maintenance procedure before working on the brake.
The exact procedure depends on the installation, jurisdiction and employer/site safety rules.
Step 2 — Identify the Brake Type and Documentation
Record:
- Brake manufacturer
- Brake model
- Motor/traction machine model
- Rated brake data
- Controller/drive
- Brake coil configuration
- Available service documentation
Do not assume that two visually similar brakes use the same adjustment values.
Step 3 — Inspect the Mechanical System
Check:
- Brake arms
- Armature
- Pins
- Springs
- Friction surfaces
- Brake shoes/linings
- Brake wheel/drum
- Manufacturer-specified release clearance
- Mechanical movement
Step 4 — Verify Electrical Release
Check the brake release circuit against the manufacturer's documentation.
Depending on the system, this may include:
- Coil supply
- Rectifier
- Control relay/contact
- Wiring
- Connectors
- Coil condition
Do not apply an arbitrary test voltage to a brake coil.
Step 5 — Verify Brake Feedback
Check:
- Brake monitoring switches
- Position sensors
- Wiring
- Feedback status
- Controller diagnostics
The feedback should correspond to the actual mechanical brake state.
Step 6 — Verify Brake/Drive Coordination
Check the sequence between:
Brake release → torque generation → movement
and:
deceleration/stop → torque removal → brake application
The actual timing and parameters must come from the specific manufacturer and controller documentation.
Step 7 — Perform the Required Functional Tests
After maintenance or adjustment, perform the applicable tests required by:
- The brake manufacturer
- The traction machine manufacturer
- The elevator manufacturer
- The applicable elevator code
- The local inspection authority
Do not define a universal “pass” test using a fixed load, speed, voltage or timing value when those values are installation-specific.
12. Common Elevator Brake Maintenance Mistakes
Mistake 1: Adding Lubricant to Stop Brake Noise
Lubrication may be appropriate for specific mechanical interfaces, but friction surfaces must never be contaminated with inappropriate lubricant.
Brake noise should first be diagnosed.
Mistake 2: Increasing Brake Clearance to Stop Dragging
A larger clearance is not automatically better.
The brake must release reliably while still maintaining the manufacturer's specified operating and stopping characteristics.
Mistake 3: Tightening the Brake to Correct Car Movement
Unexpected movement can have multiple causes.
Blindly changing spring adjustment or brake clearance without a complete diagnosis can create a new problem.
Mistake 4: Ignoring Brake/Drive Timing
A mechanically healthy brake can still produce poor starting or stopping behavior if its control sequence is not correctly coordinated with the drive.
Mistake 5: Bypassing the Brake Monitoring Circuit
This is particularly dangerous.
A monitoring fault should be diagnosed—not defeated.
Mistake 6: Replacing Brake Linings Without Finding the Cause
If the brake is dragging or releasing unevenly, new linings may simply develop the same wear pattern again.
13. How Can You Prevent Recurring Elevator Brake Problems?
A preventive maintenance program should include:
Regular Mechanical Inspection
Check the brake mechanism, springs, pins, friction surfaces and release movement according to the manufacturer's maintenance schedule.
Electrical Inspection
Verify the brake release circuit, rectifier/power supply, wiring and connections.
Feedback Verification
Confirm that brake monitoring signals correspond to the actual mechanical state.
Wear Monitoring
Record brake lining condition and identify abnormal or uneven wear early.
Documentation
Record:
- Brake model
- Adjustment history
- Parts replaced
- Fault history
- Test results
- Parameter changes
This is especially useful when troubleshooting intermittent brake faults.
14. Elevator Brake Inspection and Code Compliance
Brake requirements are jurisdiction- and installation-specific. There is no single universal brake adjustment value or one global inspection procedure that can safely be applied to every elevator.
For installations designed or maintained under the ISO/CEN framework, the current ISO 8100-1:2026 establishes safety rules for passenger and goods passenger lifts, including requirements related to the protection of users, maintenance and inspection personnel, property and lift components.
For North American installations, ASME A17.1/CSA B44 is a major safety-code reference covering elevator design, construction, installation, operation, inspection, testing, maintenance, alteration and repair. ASME currently lists the 2025 A17.1 edition on its official standards page.
ISO also maintains ISO 8100-20, which establishes Global Essential Safety Requirements for lifts and their components/functions and addresses risk reduction during operation, use and work on lifts.
Important
This article is a troubleshooting reference, not a substitute for:
- Applicable elevator codes
- Manufacturer service manuals
- Site-specific maintenance procedures
- Qualified elevator personnel
- Required inspection and testing procedures
15. Elevator Brake Troubleshooting FAQ
Why is my elevator brake dragging?
Common areas to investigate include incomplete brake release, incorrect manufacturer-specified clearance, mechanical binding, uneven adjustment, contamination and electrical release problems.
Why does my elevator brake get hot?
Brake overheating can result from mechanical dragging, incomplete release, excessive friction or abnormal electrical conditions. The cause should be identified before returning the elevator to service.
Why does my elevator shake when starting?
Check the sequence between brake release and drive torque generation. The brake should reach the required release state before the drive produces the movement required by the control system.
Why won't my elevator brake release?
Check the brake coil/power circuit, rectifier or control output, wiring and mechanical movement. The correct test method depends on the brake and traction machine.
Why does only one side of my elevator brake move?
Possible causes include mechanical binding, uneven adjustment, spring problems or unequal electromagnetic release. Compare the movement of both sides against the manufacturer's specified condition.
Can I adjust elevator brake clearance myself?
Brake adjustment is safety-critical. It should only be performed by qualified personnel using the adjustment values and procedure specified for the particular brake and elevator installation.
Can I use grease to stop elevator brake noise?
Do not apply lubricant to friction surfaces. First identify the source of the noise and follow the brake manufacturer's lubrication instructions, if applicable.
How often should an elevator brake be inspected?
Inspection intervals depend on the elevator manufacturer, brake manufacturer, applicable code, usage and local maintenance requirements. Follow the applicable maintenance schedule rather than applying one universal interval.
Should I replace the whole brake if it fails?
Not necessarily. The fault may originate in the coil, rectifier, wiring, monitoring device or mechanical mechanism. Diagnose the complete brake system before deciding which component requires replacement.
16. Glossary — Key Elevator Brake Terminology
• SAER (Spring-Applied, Electrically-Released): The standard fail-safe brake architecture — spring force applies the brake by default; coil energization releases it.
• Holding torque: The rated torque the brake must sustain to hold the car stationary at full rated load.
• Air gap / release clearance: The specified distance the armature or plunger must travel for the brake to be considered fully released.
• Rectifier / brake power module: Converts AC supply to the DC voltage required by the brake coil.
• Economy (holding) voltage: A reduced second-stage coil voltage used after initial pull-in to limit coil heating during continuous release.
• Brake monitoring switch / BM contact: A switch or sensor that reports actual brake position (released/applied) to the controller as a safety interlock.
• Chopper / PWM brake control: Electronic control of coil current using pulse-width modulation, common on modern drive-integrated brake controllers.
17. Technical References
For international and regional elevator work, relevant technical references may include:
- ISO 8100-1:2026 — Safety rules for the construction and installation of passenger and goods passenger lifts.
- ISO 8100-20:2018 — Global Essential Safety Requirements for lifts, components and functions.
- ASME A17.1/CSA B44 — Safety Code for Elevators and Escalators / Safety Code for Elevators.
- Applicable traction machine and brake manufacturer's technical documentation
- Applicable local inspection and maintenance requirements
Always use the edition adopted by the jurisdiction in which the elevator is installed.
EEP Technical Review
Content prepared by:
EEP Technical Support Team
Echo Elevador Partes
Last reviewed: August 2026
This article provides general troubleshooting information for elevator maintenance professionals. Brake adjustment values, electrical characteristics, test methods and acceptance criteria vary by brake model, traction machine, controller and jurisdiction. Always follow the applicable manufacturer's documentation and local safety requirements.
Need an Elevator Brake or Brake Component?
If you are looking for an elevator brake, brake coil, brake lining, brake microswitch, rectifier, brake release component or replacement brake assembly, send us:
- Original brake model
- Traction machine / motor model
- Manufacturer
- Rated load and speed, where relevant
- Photos of the existing brake
- Nameplate information
EEP can help identify the component and check compatibility before you order.
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