quakadjs 31036
quakadjs 31036 Furnace Motor Instruction Manual
For Atwood Hydro Flame RV Furnaces (Models 37357, 7912-II, 7900-II)
Brand: quakadjs | Model: 31036
Introduction
This instruction manual provides essential information for the proper installation, operation, maintenance, and troubleshooting of the quakadjs 31036 Furnace Motor. This motor is designed as a replacement component for various Atwood Hydro Flame RV furnace models, including 37357, 7912-II, and 7900-II. Please read this manual thoroughly before attempting any installation or service to ensure safe and correct usage.
Safety Information
Warning: Always disconnect power to the RV furnace before attempting any installation, maintenance, or repair. Failure to do so can result in electric shock, personal injury, or damage to the equipment. Installation should only be performed by qualified personnel or individuals with a thorough understanding of RV electrical and heating systems.
- Ensure the replacement motor matches the specifications of the original part.
- Wear appropriate personal protective equipment (PPE), such as gloves and eye protection.
- Verify all electrical connections are secure and correctly wired according to the furnace manufacturer's specifications.
- Do not operate the furnace if any components are damaged or improperly installed.
Package Contents
Upon opening the package, verify that the following item is present and undamaged:
- 1 x quakadjs 31036 Furnace Motor

Image 1: Front view of the quakadjs 31036 Furnace Motor. This image displays the motor body, dual shafts, and attached wiring with connectors.
Setup and Installation
This section outlines the general steps for replacing an RV furnace motor. Refer to your specific RV furnace model's service manual for detailed, model-specific instructions and diagrams.
- Disconnect Power: Turn off the RV's main power supply and disconnect the 12V DC power to the furnace.
- Access Furnace: Locate and access the RV furnace. This may involve removing exterior access panels or interior covers.
- Identify Motor: Identify the existing furnace motor. Note the orientation of the motor, blower wheel, and combustion air wheel.
- Disconnect Wiring: Carefully disconnect the electrical wiring from the old motor. Note the color coding and connection points.
- Remove Old Motor: Unfasten any mounting screws or clamps securing the old motor. Carefully remove the motor, along with the attached blower and combustion air wheels if they are to be transferred.
- Transfer Components (if applicable): If your new motor does not come with wheels, carefully remove the blower wheel and combustion air wheel from the old motor shaft and transfer them to the new quakadjs 31036 motor, ensuring they are securely fastened and correctly oriented.
- Install New Motor: Position the new quakadjs 31036 motor in the furnace housing. Secure it with the appropriate mounting hardware. Ensure the motor is stable and aligned correctly.
- Connect Wiring: Connect the electrical wiring to the new motor, matching the connections noted during removal. Ensure all connections are tight and secure.
- Verify Rotation: Before fully reassembling, briefly restore power to the furnace (if safe to do so) to verify the motor spins freely and in the correct direction. Immediately disconnect power after verification.
- Reassemble Furnace: Reinstall any removed panels or covers.
- Restore Power: Restore 12V DC power to the furnace and the RV's main power supply.

Image 2: Angled view of the quakadjs 31036 Furnace Motor, highlighting the wiring connections and shaft ends. This image shows the motor from a slightly different perspective, emphasizing the electrical terminals.
Operating Principles
The quakadjs 31036 furnace motor is a critical component of your RV's heating system. Once the furnace control board initiates a heating cycle, it sends 12 Volts DC power to this motor. The motor then begins to rotate, driving two primary components:
- Blower Wheel: This wheel circulates warm air from the heat exchanger throughout the RV's ductwork.
- Combustion Air Wheel: This wheel draws in outside air for combustion and expels exhaust gases.
The simultaneous movement of both wheels ensures proper airflow for both heating and safe exhaust ventilation. The motor is designed for continuous duty within its specified operating parameters.

Image 3: Side view of the quakadjs 31036 Furnace Motor, showing the product label with specifications like "76ZYT-NBK036" and "12VDC 2450rpm". This image provides a clear view of the motor's identification label.
Maintenance
The quakadjs 31036 furnace motor is designed for reliable and long-lasting performance. While it generally requires minimal maintenance, periodic inspection can help ensure optimal operation and extend its lifespan.
- Annual Inspection: During your RV's annual furnace service, have the motor inspected for any signs of wear, corrosion, or unusual noise.
- Cleanliness: Ensure the area around the motor, blower wheel, and combustion air wheel is free from dust, debris, and obstructions. Accumulated dirt can reduce efficiency and cause premature wear.
- Wiring Check: Periodically check all electrical connections to the motor for tightness and integrity.
- Lubrication: This motor is typically sealed and does not require external lubrication. Do not attempt to lubricate sealed bearings unless specifically instructed by the manufacturer.
Troubleshooting
If your RV furnace is not operating correctly, and you suspect the motor is the cause, consider the following common issues. Always ensure power is disconnected before inspecting components.
- Motor Not Starting:
- Check for proper 12V DC power supply to the furnace and motor.
- Verify all electrical connections are secure and free from corrosion.
- Inspect the furnace's control board for faults (consult a qualified technician).
- Unusual Noise from Motor:
- Listen for grinding, squealing, or rattling sounds. This could indicate worn bearings or an obstruction.
- Check for debris caught in the blower or combustion air wheels.
- Ensure the motor is securely mounted and not vibrating against the housing.
- Weak Airflow:
- Inspect the blower wheel for excessive dirt or damage.
- Ensure the motor is reaching its specified RPM.
- Check for obstructions in the RV's ductwork.
If troubleshooting steps do not resolve the issue, it is recommended to consult a certified RV technician.

Image 4: Another side view of the quakadjs 31036 Furnace Motor, showing both shaft ends and the wiring. This image provides a comprehensive view of the motor's physical structure.
Specifications
| Feature | Detail |
|---|---|
| Brand | quakadjs |
| Model Number (Motor) | 31036 |
| Compatible Furnace Models | Atwood Hydro Flame 37357, 7912-II, 7900-II 16 & 20, FA 79D, FA 79P, FA 76D, 76ZYT-NBK036 |
| Voltage | 12 Volts DC |
| Speed | 2450 RPM |
| Motor Body Dimensions | Approximately 3" Diameter x 3" Length |
| Shaft Dimensions | 1" Length x 5/16" Diameter (each shaft) |
| Product Dimensions (Overall) | 4"W x 6"H (approx. 4 x 4 x 6 inches) |
| Weight | 1.6 Pounds |
Warranty Information
Specific warranty details for the quakadjs 31036 Furnace Motor are typically provided at the point of purchase or by the manufacturer. Please retain your proof of purchase. For warranty claims or inquiries, contact the seller or quakadjs directly.
Customer Support
For technical assistance, installation questions, or other support needs regarding your quakadjs 31036 Furnace Motor, please contact the seller or the manufacturer, quakadjs. Refer to your purchase documentation for contact information.