GH5011 & All GH Series Gear-Reduced Hoist Parts

LiftMaster GH5011 heavy industrial-duty gear-reduced hoist operator replacement parts diagram

LiftMaster GH5011 Replacement Parts — GH Series Heavy Industrial-Duty Gear-Reduced Hoist Operator

Genuine LiftMaster replacement parts for the GH series heavy industrial-duty gear-reduced hoist operator. The GH5011 is the most common version — 1/2 HP, 115V, single phase. Use the exploded diagram to identify your part by its key number, then match it to the tables below.

The GH is built in more horsepowers than any other LiftMaster commercial operator — 1/2 through 3 HP — and several parts change with the horsepower band rather than the voltage. The gear reducer, the bevel gears and the hand chain shaft kit all differ, so check your horsepower before ordering those. Your model number is on the operator’s data label: the first two digits are horsepower and the last two are voltage and phase, so GH5011 is 1/2 HP at 115V single phase and GH3023 is 3 HP at 208/230V three phase.

The 5 HP GH is a different machine with its own parts list — see our GH 5HP page.

Models Covered

1/2 HP — most common: GH5011 (115V, 1PH), GH5021 (230V, 1PH), GH5023 (208/230V, 3PH), GH5043 (460V, 3PH), GH5053 (575V, 3PH), GH5025 (230V, 50Hz)

3/4 HP: GH7511, GH7521, GH7523, GH7543, GH7553

1 HP: GH1011, GH1021, GH1023, GH1043, GH1053

1-1/2 HP: GH1511, GH1521, GH1523, GH1543, GH1553

2 HP: GH2023, GH2043, GH2053

3 HP: GH3023, GH3043, GH3053

Logic 5.0 units: GH501L5, GH503L5, GH505L5, GH751L5, GH753L5, GH755L5, GH101L5, GH103L5, GH105L5

Replacement Parts

Ref Part # Description
1 K22-120 Brake Solenoid, 120V
1 K22-35704 Brake Solenoid, 208V
1 K22-240 Brake Solenoid, 240V
1 K22-575-1 Brake Solenoid, 575V
1 K22-36899 Brake Solenoid, 1PH, L5
1 K22-36900 Brake Solenoid, 3PH, L5
2 K80-9001 Key, 1/4" x 1/4" x 1"
3 K32-11009 Gear Reducer, 45:1 — 1/3 to 1 HP
3 K32-11010 Gear Reducer, 44:1 — 1-1/2 to 2 HP
3 K32-11011 Gear Reducer, 45:1 — 3 HP
4 K15-48B18PJH Sprocket, 48B18T, 1-3/16" B x 5/16"
4 K15-48B18QGH Sprocket, 48B18, 1-1/4" x 1/4" — 3 HP
5 K15-50B12PJH Sprocket, 50B12T, 1-3/16" B x 5/16"
5 15-80B9QGH Sprocket, 80B9, 1-1/4" x 1/4" — 3 HP
6 K10-11021 Disconnect Lever, GH
7 08-11012 Bevel Gear, 5/8" ID
7 K75-13334 Bevel Gear, 3/4" — 3 HP
8 K08-11013 Bevel Gear, 3/4" ID
9 K72-12789 Hand Chain Shaft Kit — 1/2 to 2 HP
9 K75-14661 Hand Chain Shaft Kit — 3 HP
10 K12-10883 Nylon Bearing
12 K12-10029 Flange Bearing, 3/4" x 1-1/4" x 5/8"
13 K18-11008 Compression Spring
15 K10-10191-GR Brake Disc
16 K18-10194 Compression Spring
K94-36992 Brake Cable Harness, 1PH, L5
K94-36994 Brake Cable Harness, 3PH, L5
K75-12783 Disconnect Kit, GH
K23-10916 Interlock Switch, 125/250VAC, 15A, SPDT

Service Kits

Ref Part # Description
K1 K75-12584 Brake Kit, 115V
K1 K75-12585 Brake Kit, 230V
K1 K75-12586 Brake Kit, 575V
K1 K75-36874-1 Brake Kit, 1PH, L5
K1 K75-36874-3 Brake Kit, 3PH, L5
K1 K71-B575-1 Internal Brake Solenoid, 575V
K2 K75-10177 Brake Hub Kit
K3 K72-12789 Hand Chain Shaft Kit — 1/2 to 2 HP
K3 K75-14661 Hand Chain Shaft Kit — 3 HP
K4 K75-30737 Disconnect Kit
K5 K75-12829 Gear Reducer Kit, 115V, 1 HP
K5 K75-12830 Gear Reducer Kit, 230/460V, 1 HP
K5 K75-12832 Gear Reducer Kit, 230/460V, 2 HP
K5 K75-12834 Gear Reducer Kit, 230/460V, 3 HP
K75-36875-1 Gear Housing Kit, 1PH, L5
K75-36875-3 Gear Housing Kit, 3PH, L5
K77-36826 Gear Housing, 3 HP, 3PH, L5
71-659212 Clutch Kit, GH
K19-10929-25 Chain, Hand, 353 Pitch, No ML, 25 ft

Motor Replacement Kits

The motor’s part number is printed on the motor’s own data label. If you can reach it, read the number straight off the label and match it below — that is the most reliable way to order the right motor. TEFC motors are the NEMA 4/12 enclosure versions.

Model Volts Ph Circuit Standard NEMA 4/12 (TEFC)
GH5011 115 1 Mech K20-1050C-2P K20-1050C-2T
GH5011 115 1 Logic K20-1050C-2LP K20-1050C-2TLP
GH5021 230 1 Mech K20-1050C-2P K20-1050C-2T
GH5021 230 1 Logic K20-1050C-2LP K20-1050C-2TLP
GH5023 208/230 3 Either K20-3050C-4P K20-3050C-4T
GH5043 460 3 Either K20-3050C-4P K20-3050C-4T
GH5053 575 3 Either K20-3050M-5 20-3075M-5T
GH5025 230 1 Mech 20-5150C-6 K20-5150C-6T
GH7511 115 1 Mech K20-1075C-2P 20-1075C-2T
GH7511 115 1 Logic K20-1075C-2LP K20-1075C-2TLP
GH7521 230 1 Mech K20-1075C-2P 20-1075C-2T
GH7523 208/230 3 Either K20-3075C-4P K20-3075C-4T
GH7543 460 3 Either K20-3075C-4P K20-3075C-4T
GH7553 575 3 Either K20-3075M-5-H25 20-3075C-5T
GH1011 115 1 Mech K20-1100C-2P K20-1100C-2TP
GH1011 115 1 Logic K20-1100C-2LP K20-1100C-2TLP
GH1021 230 1 Mech K20-1100C-2P K20-1100C-2TP
GH1023 208/230 3 Either K20-3100C-4P K20-3100C-4T
GH1043 460 3 Either K20-3100C-4P K20-3100C-4T
GH1053 575 3 Either K20-3100M-5-H25 K20-3100M-5T
GH1511 115 1 Mech K20-1150C-2P K20-1150C-2T
GH1511 115 1 Logic K20-1150C-2LP-H28 K20-1150C-2TLP
GH1521 230 1 Mech K20-1150C-2P K20-1150C-2T
GH1523 208/230 3 Either K20-3200C-4P 20-3200C-4TP
GH1543 460 3 Either K20-3200C-4P 20-3200C-4TP
GH1553 575 3 Either K20-3150C-5T K20-3150C-5T
GH2023 208/230 3 Either K20-3200C-4P 20-3200C-4TP
GH2043 460 3 Either K20-3200C-4P 20-3200C-4TP
GH2053 575 3 Either K20-3200M-5 K20-3200M-5
GH3023 208/230 3 Either K20-3300C-4P K20-3300C-4T
GH3043 460 3 Either K20-3300C-4P K20-3300C-4T
GH3053 575 3 Either K20-3300M-5 K20-3300M-5

Motor Replacement Kits — Logic 5.0

Model Volts Ph Part #
GH501L5 115/230 1 K20-1050C-2LP-H26
GH503L5 230/460 3 K20-3050C-4P-H24
GH505L5 575 3 K20-3050M-5-H25
GH751L5 115/230 1 K20-1075C-2LP-H27
GH753L5 230/460 3 K20-3075C-4P-H25
GH755L5 575 3 K20-3075M-5-H25
GH101L5 115/230 1 K20-1100C-2LP-H28
GH103L5 230/460 3 K20-3100C-4P-H25
GH105L5 575 3 K20-3100M-5-H25

Note: LiftMaster’s 2023 guide repeats the 3/4 HP part numbers under its 1-1/2 HP Logic 5.0 heading, so we have not listed motors for GH151L5, GH153L5 or GH155L5. Contact us with your serial number and we will confirm the correct motor.

Electrical box parts. The GH uses the same control boxes as the T, GT, APT, SD and GSD. Use the section that matches your unit’s control generation.

LiftMaster Logic Control 4.0 electrical box parts diagram for GH, T, GT, APT, SD and GSD

Electrical Box — Logic Control 4.0

Ref Part # Description
1 K13-10024 Limit Nut
2 K23-10041 Limit Switch, SPDT, 10A, 125/250VAC
3 K75-35627 E-Box Cover — GH, GT, T, GSD
4 K21-14182 Transformer, 120/240V, 24VAC, 20VA
4 K21-35057 Transformer, 460V, 24VAC
4 K21-35077 Transformer, 575V, 24VAC
5 K29-31244 Relay, DPST, 24V, 30A
5 K29-31245 Relay, 12V, 30A
6 K29-31229 Relay, 24VDC, 30A, SPDT, 1PH
7 K74-31243 MOV Kit, L5, 1PH/3PH
8 K79-15016-1 RPM Sensor Kit
9 K001A6837 Logic Board, L4
10 K002A0761 Receiver Coaxial Cable, 315MHz
11 K001C3196-3 Antenna, 315MHz
12 K42-31247 Terminal Block, 3 Position, 600V, 20A
13 K42-10040 Terminal Block, 3 Position
K74-MODELH Main Wire Harness
K1 K72-10047 Limit Shaft Assembly Kit
K1 K72-10047-1 Limit Switch Shaft Kit
K2 K72-12515-1 Limit Switch Kit
LiftMaster Logic Control 5.0 electrical box parts diagram for GH, T, GT, APT, SD and GSD

Electrical Box — Logic Control 5.0

Ref Part # Description
1 K13-10024 Limit Nut
2 K23-10041 Limit Switch, SPDT, 10A, 125/250VAC
3 K75-36914 Cover for Current Sense Kit — GT, GH, L5
4 K21-14182 Transformer, 120/240V, 24VAC, 20VA
4 K21-36793 Transformer, 208/230/460V, 20VA
4 K21-35077 Transformer, 575V, 24VAC
5 K74-31243 MOV Kit, L5, 1PH/3PH
6 K79-15016-1 RPM Sensor Kit
7 K001D8395MC Logic Board, 1PH/3PH, Current Sense Ready L5
8 K002A0761 Receiver Coaxial Cable, 315MHz
9 K001C8103-1 Antenna
10 K001D8396-1 Power Board, 115/230V, 1PH, L5
10 K001D8397 Power Board Kit, 3PH, L5
10 K001D8397-1 Power Board Kit, 575V, L5
11 K21-38158 Current Sense Harness, 3PH, L5
K94-36934 Main Wiring Harness, L5
K1 K72-10047 Limit Shaft Assembly Kit
K2 K72-12515-1 Limit Switch Kit
LiftMaster NEMA 4 and 4X electrical box parts diagram for GH, H, J, HJ, GT, T and APT

Electrical Box — NEMA 4 / 4X

Ref Part # Description
1 K03-35711 Contactor Relay, 24V, 2NO+2NC
2 K21-7115-1 Transformer, 115/230V, 1PH
2 K21-7460 Transformer, 240/480V, 3PH
2 K21-7460-1 Transformer, 230/460V, 3PH
2 K21-7575 Transformer, 575V, 24VAC
2 21-7575-1 Transformer, 575V, 3PH
3 K001A6837 Logic Board, L4
4 K52C0481 Bridge Rectifier Kit
5 K74-31243 MOV Kit, L5, 1PH/3PH
6 K42-31247 Terminal Block, 3 Position, 600V, 20A
7 K23-10041 Limit Switch, SPDT, 10A, 125/250VAC
8 K72-12515-1 Limit Switch Kit
9 K13-10024 Limit Nut
10 K79-15016-1 RPM Sensor Kit
11 K72-33192 Limit Shaft Kit
12 K75-35815 Enclosure, 1PH, N4
12 K75-35816 Enclosure, 3PH, N4
13 K29-ABC-2 Fuse, 250V, 2A
14 K74-19499 Antenna
15 AUXCARD Option Card Aux Relay Kit
LiftMaster contactor style control circuit electrical box parts diagram

Electrical Box — Contactor Style

Ref Part # Description
1 K03-8024-K Reversing Contactor
2 10-13900M1 E-Box — GH, GSD
3 K75-14347 E-Box Cover
4 K21-5115 Transformer, 115/240V
4 K21-5230 Transformer, 208/240V, 24VAC, 40VA
4 K21-5460 Transformer, 460V
5 K23-10916 Interlock Switch, 125/250VAC, 15A, SPDT
6 K24-24-1 Relay, 24V, 10A
7 K24-115-1 Relay, 120V, 10A
7 K24-230-5 Relay, 3PDT, 230V, 7A
8 K25-2006 Overload, 6A
8 K25-2008 Overload, 8A
8 K25-2010 Overload, 10A
8 K25-2015 Overload, 15A
8 K25-2020 Overload, 20A
9 K25-4002-5K Overload, 1.8-2.6A
9 K25-4003-K Overload, 2.6-3.7A
9 K25-4004-K Overload, 3.7-5.5A
9 K25-4008-K Overload, 5.5-8.0A
9 K25-4011-5K Overload, 8.0-11.5A
10 K42-10040 Terminal Block, 3 Position
11 K42-110 Terminal Block, 10 Position, 600V, 30A
12 25-3000-K Overload Bracket
K72-14130-1 Limit Shaft Kit — H, J, GH
K19-48033M Chain, #48 x 33, with ML