LiftMaster GT Heavy Industrial-Duty Trolley Operator Replacement Parts

LiftMaster K75-10170 Trolley Slider Assembly Kit

$34.88

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LiftMaster K75-10174 Front Idler Trolley Kit

$35.76

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LiftMaster K75-10259 Track Spacer Assembly Kit

$45.14

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LiftMaster K75-12870 Straight and Curved Door Arm Kit

$110.01

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LiftMaster K71-B575 Internal Brake Solenoid 575V

$297.43

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LiftMaster K71-B3PH Internal Brake Solenoid 208/230V 3PH

$263.81

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LiftMaster K75-10177 Brake Hub Kit

$24.35

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LiftMaster K32-10540 Gear Reducer, 20:1

$502.49

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LiftMaster K72-12859 Output Shaft and Sprocket Kit

$386.25

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LiftMaster K75-12858 Torque Limiter Assembly Kit

$293.59

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LiftMaster K72-18989 Idler Shaft Kit for GT Operators

$89.48

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Liftmaster K75-B575-1 Internal Brake Solenoid, 575V

LiftMaster K71-B575-1 Internal Brake Solenoid, 575V

$229.24

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Liftmaster K21-14182 Transformer, 120/240V, 24VAC, 20VA

LiftMaster K21-14182 120/240V to 24VAC 20VA Transformer

$39.20

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Liftmaster K21-35077 Transformer, 575V, 24VAC

LiftMaster K21-35077 575V to 24VAC 40VA Transformer

$81.34

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LiftMaster K74-31243 MOV Kit for Logic Commercial Operators

$58.71

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LiftMaster K79-15016-1 RPM Sensor Kit

$70.66

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LiftMaster K72-12515-1 Limit Switch Assembly Kit

$47.57

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Liftmaster K21-36793 Transformer, 208/230/460V-20VA

$43.57

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Liftmaster K001D8395 Logic Board Kit with Current Sense, L5

$169.95

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Liftmaster K001C8103-1 Antenna

$35.58

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Liftmaster K001D8397 Power Board Kit, 3PH, L5

$139.38

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Liftmaster K001D8397-1 Power Board Kit, 575V, L5

LiftMaster K001D8397-1 3 Phase Power Board Kit, 575V, Logic 5

$153.97

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LiftMaster 505 L5, K20-3050M-5-H25, 575V 3PH 60Hz Standard 1/2 HP Replacement Motor Kit

$737.58

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LiftMaster 105 L5, K20-3100M-5-H25 575V 3PH 60Hz, Standard 1HP Replacement Motor Kit

$890.61

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Liftmaster 501 L5, K20-1050C-2LP-H26 115/230V 1PH 60Hz Standard 1/2 HP Replacement Motor Kit

LiftMaster 501 L5 K20-1050C-2LP-H26 1/2 HP Standard Replacement Motor Kit

$779.84

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Liftmaster 503 L5, K20-3050C-4P-H24 230/460V 3PH 60Hz Standard 1/2 HP Replacement Motor Kit

LiftMaster 503 L5 K20-3050C-4P-H24 1/2 HP Standard Replacement Motor Kit

$478.98

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Liftmaster 101 L5, K20-1100C-2LP-H28 115/230V 1PH 60Hz Standard 1HP Replacement Motor Kit

LiftMaster 101 L5 K20-1100C-2LP-H28 1 HP Standard Replacement Motor Kit

$799.95

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Liftmaster 103 L5, K20-3100C-4P-H25 230/460V 3PH 60Hz Standard 1HP Replacement Motor Kit

LiftMaster 103 L5 K20-3100C-4P-H25 1 HP Standard Replacement Motor Kit

$539.95

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Liftmaster 153 L5, K20-3200C-4P-H26 230/460V 3PH 60Hz Standard 2HP Replacement Motor Kit

LiftMaster 153 L5 K20-3200C-4P-H26 2 HP Standard Replacement Motor Kit

$718.80

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Liftmaster 751 L5, K20-1075C-2LP-H27 115/230V 1PH 60Hz Standard 3/4HP Replacement Motor Kit

LiftMaster 751 L5 K20-1075C-2LP-H27 3/4 HP Standard Replacement Motor Kit

$665.57

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Liftmaster 151 L5, K20-1150C-2LP-H28 115/230V 1PH 60Hz Standard 1 1/2HP Replacement Motor Kit

LiftMaster 151 L5 K20-1150C-2LP-H28 1-1/2 HP Standard Replacement Motor Kit

$799.95

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Liftmaster K23-10041 Limit Switch Replacement Kit (SPDT, 10A 125/250VAC) 1/2 HP

LiftMaster K23-10041 SPDT 10A Limit Switch for Select 1/2 HP Commercial Door and Gate Operators

$15.25

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Liftmaster K71-B1PH Replacement Internal Brake Solenoid (120/240V, 1PH) Operator

LiftMaster K71-B1PH Internal Brake Solenoid for 120/240V Single Phase Operators

$299.26

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Liftmaster K72-10047-1 Limit Switch Shaft Replacement Kit 3HP Commercial Opener

LiftMaster K72-10047-1 Limit Switch Shaft Kit for 3 HP Commercial Operators

$124.22

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Liftmaster K22-575-1 Brake Solenoid (575V/60Hz) Replacement Kit Commercial Gate

LiftMaster K22-575-1 575V/60Hz Brake Solenoid Kit for Logic 5.0 Operators

$145.10

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Liftmaster K22-36899 1PH/L5 Brake Solenoid Replacement Kit Commercial Openers

LiftMaster K22-36899 1PH/L5 Brake Solenoid 208-230V Replacement Kit for Logic 5.0 Operators

$93.79

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Liftmaster K22-36900 3PH/L5 Brake Solenoid Replacement Kit (208V-230V/60Hz)

LiftMaster K22-36900 3PH/L5 Brake Solenoid 208-230V Replacement Kit for Logic 5.0 Operators

$79.93

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Liftmaster K13-10024 Limit Nut Replacement Part Commercial Door Operators

$11.73

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Liftmaster K001D8396-1 K001D8396, K001D8072-1 Power Board 1PH Logic 5

$149.95

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Liftmaster K13-10024 2-Pack Limit Nut Replacement Part Commercial Door Operators

$22.00

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Frequently Asked Questions : Liftmaster GT Heavy Industrial-Duty Trolley Operator Replacement Parts

Q1: What are the primary replacement parts available for the LiftMaster GT trolley operator?

A1: Common replacement components for the LiftMaster GT include Logic control boards, continuous-duty industrial motors, and complete trolley assemblies. Structural hardware such as heavy-duty drive chains, limit switch assemblies, and contactors are also frequently replaced.

Q2: How do I identify the correct Logic control board for a LiftMaster GT operator?

A2: To determine the compatible Logic control board, locate the exact part number printed on your existing board or refer to the operator's specification label. The replacement board must match the specific voltage, phase, and Logic generation of the original unit.

Q3: What should be done if the industrial-duty motor on the LiftMaster GT fails?

A3: Replacing a high-voltage industrial motor involves managing complex electrical connections and realigning heavy mechanical linkages. For safety and operational integrity, this procedure must be completed by a licensed electrician or a local qualified commercial door technician.

Q4: Can the trolley assembly on the LiftMaster GT be repaired if it binds or jams?

A4: The trolley assembly is a crucial mechanical component connecting the door to the drive mechanism. If the internal carriage or track slides become severely worn or bent, the entire trolley assembly typically requires complete replacement by a qualified professional.

Q5: Why might the limit switch assembly on a heavy-duty trolley operator need replacement?

A5: Limit switches endure constant mechanical friction during high-cycle commercial operations. If the commercial door consistently over-travels or fails to stop at the designated boundaries, the internal cams are likely worn and require complete replacement.

Q6: What safety devices are compatible with the LiftMaster GT industrial-duty operator?

A6: The LiftMaster GT operator requires continuous-monitoring safety peripherals, such as commercial photoelectric sensors or optical safety edges, to meet UL 325 safety standards. Refer to the manufacturer's installation manual to confirm that replacement sensors are compatible.

Q7: Can a damaged contactor on the LiftMaster GT operator be repaired internally?

A7: The contactor acts as a high-voltage relay that transfers power to the motor and is not designed for internal repair. When the internal electrical contacts become pitted or fused from repetitive commercial use, the entire contactor block must be replaced.

Q8: What indicates that the heavy-duty drive chain on the GT trolley operator needs replacing?

A8: A drive chain requires replacement if it exhibits severe rust, stiff links, or excessive metal fatigue that prevents proper tensioning. Using a compromised chain can lead to slipping, improper door operation, and potential mechanical failure.

Q9: Who is qualified to replace the internal friction clutch mechanism on the LiftMaster GT?

A9: The internal friction clutch is a tension-loaded safety mechanism designed to protect the door hardware by allowing slippage during an obstruction. Servicing or replacing this critical component requires specialized knowledge and should only be performed by a local qualified technician.

Q10: What maintenance is required after installing new mechanical parts on the GT operator?

A10: Newly installed chains, sprockets, and trolley carriages must be correctly aligned, tensioned, and lubricated according to exact factory specifications. For detailed maintenance schedules and safety testing procedures, consult the technical manual provided by the manufacturer.

LiftMaster GT Heavy Industrial-Duty Trolley Operator Replacement Parts

Products [40]

Frequently Asked Questions : Liftmaster GT Heavy Industrial-Duty Trolley Operator Replacement Parts

Q1: What are the primary replacement parts available for the LiftMaster GT trolley operator?

Q2: How do I identify the correct Logic control board for a LiftMaster GT operator?

Q3: What should be done if the industrial-duty motor on the LiftMaster GT fails?

Q4: Can the trolley assembly on the LiftMaster GT be repaired if it binds or jams?

Q5: Why might the limit switch assembly on a heavy-duty trolley operator need replacement?

Q6: What safety devices are compatible with the LiftMaster GT industrial-duty operator?

Q7: Can a damaged contactor on the LiftMaster GT operator be repaired internally?

Q8: What indicates that the heavy-duty drive chain on the GT trolley operator needs replacing?

Q9: Who is qualified to replace the internal friction clutch mechanism on the LiftMaster GT?

Q10: What maintenance is required after installing new mechanical parts on the GT operator?