Built before 2005? Different side plates, clutch shaft and output shaft — see H Model Hoist Operator Parts — Prior to 2005
Genuine LiftMaster replacement parts for the H series industrial-duty hoist operator, 2005 to current production. The H5011 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.
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 H5011 is 1/2 HP at 115V single phase and H5023 is 1/2 HP at 208/230V three phase. The H is handed — frame plate kits and frame rails come in left and right versions that do not interchange.
1/2 HP — most common: H5011 (115V, 1PH), H5021 (230V, 1PH), H5023 (208/230V, 3PH), H5043 (460V, 3PH), H5053 (575V, 3PH), H5025 (230V, 50Hz), H5038 (380V, 3PH, 50Hz)
1/3 HP: H3311, H3321, H3323, H3325, H3338, H3343, H3353
3/4 HP: H7511, H7521, H7523, H7525, H7538, H7543, H7553
1 HP: H1011, H1021, H1023, H1043, H1053
Logic 5.0 units: H501L5, H503L5, H505L5, H331L5, H333L5, H751L5, H753L5, H755L5, H101L5, H103L5, H105L5
| Ref | Part # | Description |
|---|---|---|
| 1 | K11-19471 | Clutch Shaft, H |
| 2 | K12-19504 | Flange Bearing, 1" |
| 3 | K15-19481 | Sprocket, 48B14T, 1-1/2" B |
| 4 | 15-50B12LGH | Sprocket, 50B12T, 1" B x 1/4" |
| 5 | K18-11379 | Compression Spring |
| 6 | K72-12789 | Hand Chain Shaft Kit |
| 7 | K75-19985 | Pulley Assembly |
| 8a | K12-10883 | Nylon Bearing |
| 8b | K12-10882 | Bushing, 3/4" x 1" x 5/8" |
| 8c | K80-10883 | Washer, 3/4" x 2-1/2" |
| 9 | K15-19478 | Sprocket, 48B32T, 1-1/2" B |
| 10 | K16-5L304 | V Belt, 30-1/32" |
| 11 | K75-19978-L | Frame Plate Kit, Left Hand |
| 12 | K75-19978-R | Frame Plate Kit, Right Hand |
| 13 | K75-19981 | Arm Kit, H |
| 14 | K23-10916 | Interlock Switch, 125/250VAC, 15A, SPDT |
| 15 | K17-6014 | Pulley, 2" OD, 5/8" B |
| 16 | K39-10167 | Clutch Disc |
| 17 | K12-10891 | Ball Bearing, 1" |
| 18 | — | Motor — see Motor Replacement Kits below |
| — | K19-48047M | Chain, #48 x 47 |
| Ref | Part # | Description |
|---|---|---|
| K1 | K72-19979 | Clutch Shaft Kit, H Post-2005 |
| K2 | K72-19974 | Output Shaft Kit, H, J |
| — | K71-B120H | Internal Brake Solenoid, 120V with Cable |
| — | K71-B240H | Internal Brake Solenoid, 240V with Cable |
| — | K71-B575H | Internal Brake Solenoid, 575V with Cable |
| — | K73-HFRAME-L | Frame Kit, H, Left Hand |
| — | K73-HFRAME-R | Frame Kit, H, Right Hand |
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. If the label is unreadable, find your model number in the first column. TEFC motors are the NEMA 4/12 enclosure versions.
| Model | Volts | Ph | Part # |
|---|---|---|---|
| H501L5 | 115/230 | 1 | K20-1050B-2LP-H24 |
| H503L5 | 230/460 | 3 | K20-3050B-4P-H24 |
| H505L5 | 575 | 3 | K20-3050M-5-H25 |
| H331L5 | 115/230 | 1 | K20-1050B-2LP-H24 |
| H333L5 | 230/460 | 3 | K20-3050B-4P-H24 |
| H751L5 | 115/230 | 1 | K20-1075B-2LP-H24 |
| H753L5 | 230/460 | 3 | K20-3075B-4P-H24 |
| H755L5 | 575 | 3 | K20-3075M-5-H25 |
| H101L5 | 115/230 | 1 | K20-1100B-2LP-H24 |
| H103L5 | 230/460 | 3 | K20-3100B-4P-H24 |
| H105L5 | 575 | 3 | K20-3100M-5-H25 |
Electrical box parts. The H shares its control boxes with the J and HJ, and those boxes use different parts from the T and GT versions — check the part numbers below rather than assuming. The H was also offered in a NEMA 4/4X enclosure and, on early units, the contactor-style box.
| Ref | Part # | Description |
|---|---|---|
| 1 | K13-10024 | Limit Nut |
| 2 | K23-10041 | Limit Switch, SPDT, 10A, 125/250VAC |
| 3 | K75-35626 | E-Box Cover — J, H, HJ |
| 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 | K72-14130-1 | Limit Shaft Kit — H, J, GH |
| K2 | K72-12515-1 | Limit Switch Kit |
| Ref | Part # | Description |
|---|---|---|
| 1 | K13-10024 | Limit Nut |
| 2 | K23-10041 | Limit Switch, SPDT, 10A, 125/250VAC |
| 3 | K75-36913 | Cover for Current Sense Kit — H, J, 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 | K72-14130-1 | Limit Shaft Kit — H, J, GH |
| K2 | K72-12515-1 | Limit Switch Kit |
| 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 |
| Ref | Part # | Description |
|---|---|---|
| 1 | K03-8024-K | Reversing Contactor |
| 2 | 10-10020M1 | E-Box — H, J, T |
| 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 |