LiftMaster K73-33856 MHS Hoist Operator Medium Duty Door Operator Instructions
- October 30, 2023
- LiftMaster
Table of Contents
LiftMaster K73-33856 MHS Hoist Operator Medium Duty Door Operator
Product Information
K72-33856 Output Shaft Assembly Kit
The K72-33856 Output Shaft Assembly Kit is a set of replacement components for the Model MHS Operator’s output shaft. The kit includes an output shaft, flange bearings, sprockets, washers, spacers, keys, snap rings, set screws, chain, and roll pin. These components are essential to ensure the proper functioning of the output shaft in the operator.
Carton Inventory
| Item | Description | P/N | QTY |
|---|---|---|---|
| 1 | Output Shaft | 11-33852 | 1 |
| 2 | Flange Bearing | 12-10715 | 2 |
| 3 | Sprocket #48B18 X 1 Bore | 15-48B18LGE | 1 |
| 4 | Sprocket #48B24 X 1 Bore | 15-48B24LXX | 1 |
| 5 | Washer, Thick | 80-206-11 | 2 |
| 6 | Spacer, Thin | 80-206-10 | 4 |
| 7 | Key 1/4 X 1 -1/2 Long | 80-207-19 | 4 |
| 8 | Snap Ring, 1 Plated | 158A0056 | 1 |
| 9 | Dual Sprocket, #48B24/13 X 1 Bore | 15-34802 | 1 |
| 10 | HS Set Screws, 5/16-18 X 06 | 82-NH31-06 | 3 |
| Not Shown | Chain, #48 X 39 Links | 19-48039MB | 3 |
| Not Shown | Rollpin, 5/16 X 2 | 86-RP10-108 | 1 |
Installation Recommendations
- Close the door and secure it.
- Disconnect power to the operator to prevent possible serious injury or death.
- Remove the drive chain from the operator to the door.
- Remove the operator from its location.
- Refer to the owner’s manual provided by the operator for all mounting and wiring instructions.
- Reset limits after the operator is reinstalled.
- Reapply power to the operator.
- Test all safety equipment (if applicable) for proper functionality.
Product Usage Instructions
- Ensure that the door is closed and secured before beginning installation.
- Disconnect power to the operator to prevent serious injury or death.
- Remove the drive chain from the operator to the door.
- Remove the operator from its location.
- Refer to the owner’s manual provided by the operator for all mounting and wiring instructions.
- Install the components from the K72-33856 Output Shaft Assembly Kit according to the instructions provided in the owner’s manual.
- Reset limits after the operator is reinstalled.
- Reapply power to the operator.
- Test all safety equipment (if applicable) for proper functionality.
APPLICATION REQUIREMENTS
Replacement of Output Shaft and/or its components for a Model MHS Operator.
| Item | Description | P/N | QTY |
|---|---|---|---|
| 1 | Output Shaft | 11-33852 | 1 |
| 2 | Flange Bearing | 12-10715 | 2 |
| 3 | Sprocket #48B18 X 1 Bore | 15-48B18LGE | 1 |
| 4 | Sprocket #48B24 X 1 Bore | 15-48B24LXX | 1 |
| 5 | Washer, Thick | 80-206-11 | 2 |
| 6 | Spacer, Thin | 80-206-10 | 4 |
| 7 | Key 1/4 X 1 -1/2 Long | 80-207-19 | 4 |
| 8 | Snap Ring, 1 Plated | 158A0056 | 1 |
| 9 | Dual Sprocket, #48B24/13 X 1 Bore | 15-34802 | 1 |
| 10 | HS Set Screws, 5/16-18 X 06 | 82-NH31-06 | 3 |
| Not Shown | Chain, #48 X 39 Links | 19-48039MB | 3 |
| Not Shown | Rollpin, 5/16 X 2 | 86-RP10-108 | 1 |
INSTALLATION
INSTALLATION RECOMMENDATIONS
- Close the door and secure it.
- Disconnect power to the operator.
- Remove the drive chain from the operator to the door.
- Remove the operator from its location.
- Refer to the owner’s manual provided by the operator for all mounting and wiring instructions.
- Reset limits after the operator is reinstalled.
- Reapply power to the operator.
- Test all safety equipment (if applicable) for proper functionality.
WARNING
To prevent possible SERIOUS INJURY or DEATH, disconnect the electric power to operator BEFORE installing.
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