Introduction
This manual provides instructions for the installation, operation, and maintenance of the AlveyTech Motor Fork Head, designed as a replacement part for electric lift chairs equipped with Okin DeltaDrive motors. This component is engineered to ensure proper function and compatibility with various lift chair models.
Product Overview
The AlveyTech Motor Fork Head is a crucial replacement component for electric lift chair actuators. It features a left-hand counter-clockwise 1-inch thread (M25x0.75) and is designed to connect the lift chair's motor to its frame, facilitating the lifting and reclining functions. This part is made from durable plastic and serves as a sacrificial component, designed to break before more expensive motor parts are damaged.

Close-up view of the AlveyTech Motor Fork Head, showing its left-hand threaded base and fork-like top.

Diagram illustrating the simple installation process and protective function of the motor fork head.
Compatibility
This motor fork head is specifically designed for use with DewartOkin DeltaDrive lift actuator motors. It is compatible with numerous electric lift chair models from manufacturers such as Golden Technologies, Pride Mobility, and Mega Motion. Always verify your motor's thread type and size before ordering to ensure correct fitment.

Image detailing the fit and compatibility of the AlveyTech Motor Fork Head with various Golden, Pride, and Mega Motion lift chair models.
Compatible Models:
- Golden Technologies: Comforter (PR501); Comforter Wide (PR501); MaxiComfort Cirrus (PR508); MaxiComfort Cloud (PR510); MaxiComfort Comforter (PR505); MaxiComfort Relaxer (PR756); Signature Burlington (PR722); Signature Regal (PR751); Signature Royal (PR752); Signature Shiatsu (PR724); Signature Transfer Lift (PR451); Signature Winston (PR410); Traditional Cambridge (PR401); Traditional Pioneer (PR643); Traditional Williamsburg (PR747); Value Capri (PR200); Value Monarch (PR355).
- Mega Motion: NM 2450.
- Pride Mobility: Classic LC-215 (CL-15/LC-15); Classic LC-220 (CL-20/LC-20); Classic LC-225; Classic LC-250 (CL-30/LC-30); Elegance LC-421 (LC-550); Elegance LC-450 (LL-450); Elegance LC-470 (LC-570/LL-570); Elegance LC-485 (LC-585); Elegance LC-510 (LL-510); Elegance LC-560 (LC-575); Heritage GL-58; Heritage LC-358 (GL-358); Infinity LC-525; Oasis LC-580; Serenity SR-358 (SR-358S/SR-358M/SR-358L).
Setup: Installation Instructions
The AlveyTech Motor Fork Head is designed for straightforward installation. Follow these steps carefully to replace your existing fork head.
Tools Required:
- Adjustable wrench or appropriate size wrench
- Gloves (recommended)
Installation Steps:
- Preparation: Ensure the lift chair is unplugged from the power source to prevent accidental operation. Position the chair to allow easy access to the motor and existing fork head.
- Removal of Old Fork Head: Carefully unscrew the old fork head from the top of the Okin DeltaDrive lift actuator motor. Note that this part features a left-hand, counter-clockwise thread, meaning you will turn it clockwise to loosen.
- Inspection: Inspect the motor's threaded shaft for any damage or debris. Clean if necessary.
- Installation of New Fork Head: Align the new AlveyTech Motor Fork Head with the threaded shaft of the Okin DeltaDrive motor. Gently thread the new fork head onto the motor shaft by turning it counter-clockwise. Ensure it is securely tightened, but do not overtighten, as this part is designed to break before the motor.
- Reassembly and Testing: Reconnect the motor to the chair's frame if it was detached. Plug the chair back into the power source and test the lift and recline functions to ensure proper operation.

Image showing the AlveyTech Motor Fork Head being installed onto a lift chair motor, with an arrow indicating the direction of attachment.
Operating Your Lift Chair with the New Fork Head
Once the AlveyTech Motor Fork Head is installed, your lift chair should operate as intended. Use your chair's standard remote control to adjust positions. This fork head facilitates the smooth extension and retraction of the lift actuator, allowing for comfortable reclining and assisted standing.

A grey lift chair in a living room setting, demonstrating its lifting function.
Maintenance and Care
The AlveyTech Motor Fork Head is designed to be a sacrificial component, meaning it is engineered to break before more expensive parts of your lift chair motor are damaged. Regular inspection and proper use can extend its lifespan and prevent premature failure.
Key Maintenance Points:
- Regular Inspection: Periodically check the fork head for any signs of wear, cracks, or damage.
- Avoid Obstructions: Ensure the lift chair's movement path is clear of any obstructions, such as walls or furniture, which can cause undue strain on the motor and fork head.
- Do Not Overload: Adhere to the weight capacity limits specified by your lift chair manufacturer. Overloading can stress the motor and its components.
- Proper Use: Avoid abrupt movements or forcing the chair into positions. Allow the motor to operate smoothly.
Troubleshooting Common Issues
If you experience issues after installing the AlveyTech Motor Fork Head, consider the following troubleshooting steps:
Fork Head Breaks Repeatedly:
- Underlying Chair Issue: If the fork head breaks shortly after installation or repeatedly, it indicates an underlying problem with the lift chair itself. This part is designed to fail to protect the motor.
- Check for Obstructions: Verify that the chair is not pressing against a wall or other immovable object during operation.
- Inspect Chair Mechanism: Examine the chair's lifting mechanism for binding, bent components, or excessive friction that could be straining the motor.
- Motor Strain: Excessive strain on the motor can lead to the fork head breaking. Ensure the chair's movement is smooth and unobstructed.
Fork Head Does Not Thread Correctly:
- Thread Direction: Remember the fork head has a left-hand, counter-clockwise thread. Ensure you are turning it in the correct direction (counter-clockwise to tighten).
- Compatibility Check: Double-check that the thread size (1" / M25x0.75) and type (left-hand) match your specific Okin DeltaDrive motor. Many motors have similar-looking fork heads but different thread specifications. Refer to your motor's specifications or the original part.
- Damaged Threads: Inspect the threads on both the motor shaft and the new fork head for any damage.
Product Specifications
| Feature | Detail |
|---|---|
| Brand | AlveyTech |
| Model Number | G45-4219 |
| OEM Part Number | GMOKI-13 |
| Material | Plastic |
| Overall Length | 2-7/16" (6.19 cm) |
| Thread Length | 7/8" (2.21 cm) |
| Thread Size | 1" (M25x0.75) |
| Thread Type | Left-Hand Counter-Clockwise |
| Fit Type | Universal Fit (for compatible Okin DeltaDrive motors) |

Detailed diagram showing the dimensions of the AlveyTech Motor Fork Head, including overall length, thread length, thread size, and diameter.