M1031 AEROSTAR, YORK TYPE ACCUMULATOR PISTON AND SEALS

The **Marsh Brothers M1031 Aerostar York‑type Accumulator Piston & Seal Kit** is a **certified hydraulic accumulator upgrade** designed for York‑model hydraulic accumulators installed on compatible Aerostar aircraft. This kit replaces the OEM aluminum piston and multi‑part seal assembly with a **non‑metallic AeroTough® GF piston** and advanced **AeroLas®‑Flex dynamic seals**. The non‑metallic construction eliminates metal‑on‑metal contact — preventing bore scoring or wear — while the high‑performance seals resist swelling, shrinking, or binding over a wide range of operating conditions. Additionally, the Marsh Brothers design simplifies the accumulator internals by reducing the part count from five (OEM) to three, making installation and maintenance more straightforward. --- ## Applications - Upgrade or replacement of York‑type hydraulic accumulators in Aerostar aircraft - Restoration of accumulator reliability where bore wear, seal leakage, or piston sticking is present - Preventative maintenance for aircraft intended for long-term service or high‑cycle operation --- ## Why CJ Aerospace? CJ Aerospace delivers trusted, aviation‑approved hydraulic system upgrades for general aviation aircraft. By supplying Marsh Brothers hydraulic accumulator kits, we support safer, more reliable accumulator performance and easier maintenance. - 🇦🇺 **Australian‑owned & operated** - 📦 **Local stock for fast dispatch across Australia** - 🔧 **Specialist knowledge of hydraulic systems and aircraft parts** - 🛠️ **Used by MROs and operators requiring certified upgrades for hydraulic components** > ✉️ [Contact us sales@cjaerospace.com.au](mailto:sales@cjaerospace.com.au) > Need installation guidance or compliance documentation? Contact CJ Aerospace for support.

- **Non‑metallic AeroTough® GF piston** — eliminates risk of cylinder‑bore scoring or metal abrasion - **Advanced AeroLas®‑Flex dynamic seals** — stable over wide temperature ranges; resistant to swelling, shrinking, or binding - **Reduced part count** — simplifies the accumulator internal layout (from 5 OEM parts to 3 components) - **Improved reliability and longevity** — designed to reduce seal failure, leakage, and maintenance frequency - **Certified for Aerostar hydraulic accumulators** under both U.S. (FAA) and Canadian (TCCA) Supplemental Type Certificates (STCs)