Tronair KHC-3558 Hydraulic Reservoir Coupling Kit – Select Bombardier & Embraer Aircraft
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The Tronair KHC-3558 Hydraulic Reservoir Coupling Kit is designed for use on select Bombardier and Embraer aircraft models. This kit adapts the hose to a specific aircraft reservoir bulkhead coupling.
Challenger 300/350 Coupling Info on S/B
For Challenger 300 and 350 aircraft, please review the S/B info below for the correct reservoir coupler.
- KHC-3558 – Pre S/B 100-29-05 Mod/Current Production
- KHC-1012 – Post S/B 100-29-05 Mod/Current Production
- KHC-1012-M (with Metal Dust Plug) – Post S/B 100-29-05 Mod/Current Production
| General Information | |
|---|---|
| Part # | KHC-3558 |
| Manufacturer | Tronair |
| Manual 1 | View Tronair KHC-3558 Manual |
| Shipping Information | |
|---|---|
| Product Weight | 0.5 lbs. |
| Product Dimensions | 4 x 4 x 4 in. |
| Schedule B | 7307923010 |
| ECCN | EAR99 |
| Spare Parts | |
|---|---|
| N-2052-06 | Expander, 4-6 Tube |
| N-2418-02 | Plug, Dust |
| N-2419-01 | Coupling, Quick Disconnect (Used with Phosphate Ester fluids only) |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Bombardier |
Challenger 300
NOTE
Pre-S/B 100-29-05 Mod/Current Production
,
Challenger 350
NOTE
Pre-S/B 100-29-05 Mod/Current Production
|
| Comac | ARJ21 |
| Embraer | E175-E2 , E190-E2 , E195-E2 , ERJ-170 , ERJ-175 , ERJ-190 , ERJ-195 , Lineage 1000 |
| Sukhoi | SJ100 |
PRODUCT REVIEWS
QUESTIONS & ANSWERS
The Tronair KHC-3558 hydraulic reservoir coupling kit is designed to create a secure connection between ground support hydraulic servicing equipment and an aircraft hydraulic reservoir. This connection allows technicians to safely transfer or service hydraulic fluid during maintenance procedures. By ensuring a reliable interface between equipment and aircraft systems, the coupling kit helps maintain proper hydraulic system performance and cleanliness.
Hydraulic reservoir coupling kits play an important role in maintaining the integrity of aircraft hydraulic systems. They allow technicians to service reservoirs without introducing contamination or air into the system. Proper couplings help ensure efficient fluid transfer and support safe maintenance procedures on aircraft hydraulic components.
The quick-disconnect coupling used in the KHC-3558 kit allows technicians to connect and disconnect hydraulic servicing equipment quickly. This reduces the time required to set up or remove hydraulic servicing lines during routine maintenance. It also minimizes the risk of fluid leakage during connection changes.
The quick-disconnect coupling included in the kit is designed for use with phosphate ester hydraulic fluids, which are commonly used in many aircraft hydraulic systems. These fluids provide fire-resistant properties critical to aviation applications. Using compatible couplings helps ensure proper sealing and system protection.
The kit includes a quick-disconnect coupling, a dust plug, and a tube expander component designed to support proper installation and fluid transfer connections. Each component plays a role in creating a secure and contamination-resistant hydraulic servicing interface. Together, these parts help technicians connect servicing equipment safely and efficiently.
Aircraft hydraulic systems are extremely sensitive to contamination from debris, moisture, or improper fluids. Even small contaminants can lead to premature wear, reduced system performance, or component failure. Using a dedicated hydraulic reservoir coupling kit helps maintain clean fluid transfer and protects sensitive hydraulic components.
The dust plug helps protect the hydraulic coupling when it is not connected to servicing equipment. Covering the connection point prevents dirt, debris, and moisture from entering the coupling. This simple component helps maintain system cleanliness and extends the life of the hydraulic servicing interface.
No. Tronair specifies that the coupling kit must not be modified without the manufacturer's written approval. Unauthorized modifications may void warranties and create safety risks during hydraulic servicing operations. Using only approved components helps ensure the kit functions as designed.
Using genuine Tronair replacement parts ensures compatibility with the original design and materials of the coupling system. OEM components are manufactured to meet the same specifications and performance standards as the original equipment. This helps maintain reliability and protects warranty coverage.
Technicians should regularly inspect hydraulic couplings for wear, leaks, or contamination before use. Keeping dust plugs installed when the kit is not connected helps prevent debris from entering the system. Proper storage and the use of compatible hydraulic fluids also contribute to longer service life and reliable performance.
