Tronair AGE13604A Ground Test Motor Tool for Ram Air Turbine (RAT)
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Powered by a suitable hydraulic cart, the Tronair AGE13604A Ground Test Motor Tool is used to back-drive the ram air turbine (RAT) during ground checkout.
The hydraulic motor provides power and speed capabilities consistent with the requirements of the ground test procedures. Ground tests are to be performed in accordance with the aircraft's AMM and the RAT manufacturer's instructions.
The Ground Test Motor Tool consists of a hydraulic motor, adapter plate, splined adapter shaft, two hoses with couplings for connecting to a hydraulic cart, a strap-and-hook assembly for supporting the hose by the fuselage, and a heavy-duty storage case.
Specifications
- Required HPU: 5731 Series
- Hydraulic Cart Requirements: 20 gpm @ 3,000 PSI (76 lpm @ 207 bar)
- Maximum Pressure: 3,150 PSI (218 bar)
- Pressure Supply Hose: 20 ft (6.1 m)
- Return Hose: 20 ft (6.1 m)
- Operating Temperature: -10°F to 120°F (-23°C to 49°C)
- Case Dimensions: 35" L x 31" W x 17" H (88.9 x 78.7 x 43.2 cm)
- Weight (Motor/Adapter/Spline/Fitting): Approx. 9 lbs (4 kg)
- Certification: CE marked
| Alternate Models | |
|---|---|
| 13-6604-6600 | Previous Model Number |
| General Information | |
|---|---|
| Part # | AGE13604A |
| Manufacturer | Tronair |
| Shipping Information | |
|---|---|
| Shipping Weight | 225 lbs. |
| Shipping Dimensions | 40 x 36 x 22 in. |
| Freight NMFC | 133300 |
| Schedule B | 8411824010 |
| ECCN | EAR99 |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Comac | ARJ21 |
| Embraer |
,
,
,
,
,
,
,
Lineage 1000
NOTE
Use in conjunction with the KHC-3747 Hydraulic Coupling Kit.
|
| Sukhoi | SJ100 |
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QUESTIONS & ANSWERS
The AGE13604A is designed to back-drive the Ram Air Turbine (RAT) during ground checkout procedures. Instead of relying on in-flight deployment, it allows technicians to test and verify RAT functionality while the aircraft is on the ground. This helps confirm that the RAT will deploy and operate correctly in an emergency, ensuring compliance with airframer maintenance manuals and manufacturer guidelines.
The AGE13604A ground test motor should only be operated by trained and qualified aircraft technicians. Both installation and operation require familiarity with hydraulic systems and the RAT manufacturer’s instructions. Maintenance tasks should also be performed by experienced personnel, as improper handling could compromise safety or damage the unit.
The test motor is powered by a hydraulic cart capable of supplying 20 gallons per minute at 3,000 PSI. To prevent equipment damage, the maximum supply pressure must not exceed 3,150 PSI. Aviation phosphate ester hydraulic fluids (Type IV or V) are required for proper operation.
Installation involves securing the test motor's splined shaft into the RAT generator shaft using three captive fasteners tightened to the specified torque. A support strap and hook assembly must also be attached to the RAT compartment to support the hoses. Proper alignment and connection of the pressure and return hoses to the hydraulic cart are critical for safe use.
Operators must always follow the airframe and RAT manufacturer’s instructions and Tronair’s safety guidelines. They should also wear personal protective equipment, such as hearing protection, gloves, and safety glasses. The unit should only be operated within its approved temperature range of -10°F to +120°F, and safeguards against hazards must be provided according to applicable regulations.
Before operating the ground test motor, technicians must confirm that all fasteners are tightened, hydraulic couplings are properly engaged, and hoses are securely supported. The return valve on the hydraulic power cart should be fully open prior to applying supply pressure. These steps help prevent leaks, unstable operation, or potential RAT or equipment damage.
To stop the AGE13604A, technicians should gradually reduce and then remove the supply of pressurized fluid from the hydraulic motor. The bypass valve on the hydraulic power unit should always be opened before stopping the motor. In emergencies, the hydraulic cart’s emergency stopping procedures and the RAT manufacturer’s ground checkout instructions should be followed.
The AGE13604A comes with a durable shipping and storage case equipped with three side handles for easier handling. While the case can be rolled, it is not designed for overhead lifting. Storage should be indoors in a dry environment to protect the precision hydraulic components from moisture damage.
The AGE13604A requires minimal scheduled maintenance but should be inspected regularly for wear and leaks. Key inspection points include the splined adaptor shaft and hose connections. Although no recurring service intervals are mandated, hydraulic motor rebuild services are available when necessary.
Recommended spare parts include the adapter shaft, pressure and return hoses, a retaining clip, and the hydraulic motor. Keeping these parts in stock ensures quick replacement in case of damage or wear. Operators should always use OEM parts to maintain safety and compliance.
Tronair warrants the AGE13604A against defects in manufacturing or materials for one year from shipment. Replacement parts carry a 90-day warranty. Unauthorized modifications, misuse, or ignoring warnings in the manual will void the warranty, and customers must obtain a Return Material Authorization (RMA) before sending items back for service.




