Introduction
This manual provides essential information for the proper setup, operation, and maintenance of your Piko 36004 G Scale Motor with Worm Gear BR194. Designed for G scale model trains and dioramas, this motor offers realistic detail and robust performance. Please read this manual thoroughly before use to ensure safe and optimal functionality.

Image: The Piko 36004 G Scale Motor, featuring its metallic cylindrical body, black end cap with electrical terminals, and a brass worm gear on the shaft. This component is crucial for driving G scale model trains.
Setup and Installation
Proper installation is critical for the motor's performance and longevity. Follow these steps carefully:
- Preparation: Ensure your model train chassis or diorama component is clean and free of debris. Identify the designated mounting location for the motor.
- Mounting: Secure the Piko 36004 motor firmly into its intended position using appropriate screws or mounting brackets (not included). Ensure the motor is aligned correctly with the drive mechanism (e.g., axle, gearbox). Avoid overtightening, which can damage the motor casing or mounting points.
- Electrical Connection: Connect the motor's electrical terminals to your power source (e.g., train controller, power supply) according to the polarity requirements of your system. Typically, one terminal connects to the positive (+) and the other to the negative (-) output. Refer to your model train's wiring diagram for specific instructions. Ensure connections are secure to prevent intermittent operation or short circuits.
- Gear Engagement: Verify that the worm gear on the motor shaft properly engages with the corresponding gear on the driven component. There should be minimal backlash but no binding. Adjust motor position if necessary to achieve smooth engagement.
- Initial Test: Before full operation, perform a brief test run at low power to confirm correct rotation direction and smooth operation. If the direction is incorrect, reverse the electrical connections.
Operating Instructions
Once installed, the Piko 36004 motor is ready for operation. Adhere to the following guidelines:
- Power Supply: Use a stable DC power supply appropriate for G scale model trains. Refer to your model train system's specifications for recommended voltage and current.
- Speed Control: Control the motor speed using your model train controller. Gradually increase power to achieve desired speed. Avoid sudden, rapid changes in speed, especially when the train is heavily loaded.
- Overload Protection: Do not operate the motor under excessive load, which can lead to overheating and damage. If the motor becomes unusually hot or emits a burning smell, immediately disconnect power and investigate the cause.
- Continuous Operation: While designed for robust use, prolonged continuous operation at maximum load may cause heat buildup. Allow for cool-down periods if operating for extended durations.
Maintenance
Regular maintenance helps ensure the longevity and smooth operation of your motor:
- Cleaning: Periodically inspect the motor for dust, lint, or debris accumulation, especially around the shaft and worm gear. Use a soft brush or compressed air to gently remove any foreign material. Do not use liquid cleaners directly on the motor.
- Lubrication: The worm gear and motor shaft bearings may benefit from a very small amount of specialized plastic-compatible lubricant designed for model trains. Apply sparingly and wipe away any excess. Consult your model train's specific maintenance guide for lubrication recommendations.
- Inspection: Regularly check electrical connections for tightness and corrosion. Inspect the worm gear for wear or damage. Replace the motor if significant wear or damage is observed.
- Storage: When not in use for extended periods, store the motor in a clean, dry environment away from extreme temperatures and direct sunlight.
Troubleshooting
If you encounter issues with your Piko 36004 motor, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not run | No power, loose connection, faulty wiring, motor seized. | Check power supply. Verify all electrical connections are secure. Inspect wiring for breaks. If motor is seized, it may require replacement. |
| Motor runs slowly or inconsistently | Insufficient power, dirty contacts, binding gears, debris in motor. | Ensure adequate power supply. Clean electrical contacts. Check for proper gear engagement and lubrication. Clean motor of any debris. |
| Motor makes unusual noise | Worn gears, lack of lubrication, foreign object, motor damage. | Inspect gears for wear. Apply appropriate lubricant. Check for and remove any foreign objects. If noise persists, motor may be damaged. |
| Motor overheats | Excessive load, insufficient ventilation, prolonged operation. | Reduce load on the motor. Ensure adequate airflow around the motor. Allow motor to cool down between extended operating periods. |
If the problem persists after attempting these solutions, contact Piko customer support or a qualified technician.
Specifications
| Feature | Detail |
|---|---|
| Brand | Piko |
| Model Name | Piko |
| Item Model Number | 36004 |
| Material | Plastic |
| Manufacturer Recommended Age | 14 years and up |
| ASIN | B006PWBWCC |
Warranty Information
Piko products are manufactured to high quality standards. For specific warranty terms and conditions, please refer to the documentation included with your purchase or visit the official Piko website. Keep your proof of purchase for any warranty claims.
Customer Support
For further assistance, technical support, or inquiries regarding your Piko 36004 G Scale Motor, please contact Piko customer service. Contact details can typically be found on the official Piko website or on the product packaging.
Note: Product specifications and appearance are subject to change without prior notice for product improvement.





