7583740 - PTI Technologies FAA-PMA Filter Element

7583740 – PTI Technologies FAA-PMA Hydraulic Filter Element

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The PTI Technologies 7583740 is a high-performance, FAA-PMA certified hydraulic filter element engineered as a direct replacement for the Boeing OEM part number 1-758374001-1. This element is a critical component in the contamination control strategy for high-pressure aircraft hydraulic systems, specifically designed to protect sensitive flight control actuators, servo-valves, and pumps from microscopic particulate matter. By removing contaminants generated internally (wear debris) and introduced externally, the 7583740 ensures the operational reliability and longevity of the entire hydraulic circuit.

Manufactured by PTI Technologies, a division of Parker Hannifin, this filter element utilizes advanced synthetic filter media to achieve superior filtration efficiency, high dirt-holding capacity, and low differential pressure. Its robust construction is designed to withstand the extreme pressure cycles, high flow rates, and temperature variations inherent in modern aircraft hydraulic systems. As an FAA-PMA approved part, it has demonstrated a level of performance and quality that is equivalent to or exceeds that of the original equipment manufacturer's part, offering a certified and cost-effective solution for fleet maintenance.

Key Features

• FAA-PMA Certified: Fully certified by the FAA as a direct replacement for Boeing P/N 1-758374001-1, ensuring airworthiness and compliance.

• Advanced Synthetic Media: Employs a proprietary multi-layer, pleated micro-glass filter media for exceptional particle capture efficiency and extended service life.

• High Dirt-Holding Capacity (DHC): The pleated design maximizes the effective filtration surface area, allowing the element to retain a large volume of contaminants before reaching its change-out pressure differential.

• Low Differential Pressure: Engineered for minimal flow restriction (ΔP), optimizing hydraulic system efficiency and reducing the load on system pumps.

• Collapse-Resistant Construction: Features a robust core tube and high-strength end caps to maintain structural integrity under high-pressure surges and full-clog scenarios, preventing media collapse and downstream contamination.

• Superior Sealing: Equipped with high-grade fluorocarbon (Viton®) seals for excellent compatibility with aircraft hydraulic fluids (e.g., MIL-PRF-83282, Skydrol) across a wide operating temperature range.

Technical Specifications

• Part Number: 7583740

• Component Type: Hydraulic System Filter Element

• OEM Manufacturer: PTI Technologies (A Parker Hannifin Company)

• FAA-PMA Status: Approved replacement for Boeing P/N 1-758374001-1.

• Filtration Media: Proprietary Synthetic Micro-glass Fiber

• Micron Rating: Engineered to meet or exceed the OEM filtration efficiency specifications (consult CMM for absolute rating).

• Materials:

  • End Caps: Anodized Aluminum

  • Core Tube: Corrosion-Resistant Steel (CRES)

  • Seals: Fluorocarbon (Viton®)

• Collapse Pressure Rating: Designed to meet the OEM specification, typically rated for a differential pressure exceeding 3000 psid.

• Governing Specifications: Manufactured under an FAA-approved quality system to meet or exceed all performance parameters of the original Boeing part.

Aircraft Compatibility

The 7583740 filter element is certified for installation in the hydraulic systems of the following aircraft models:

• Boeing:

  • 737-300, -400, -500 (Classic Series)

  • 737-600, -700, -800, -900 (Next Generation Series)

Crucial Note: Verification against the specific aircraft's current Illustrated Parts Catalog (IPC) and Component Maintenance Manual (CMM) is mandatory to ensure correct part number applicability and installation eligibility.

Applications

This filter element is installed within the pressure filter modules of the main hydraulic power systems. Its primary applications include:

• System A Pressure Filter

• System B Pressure Filter

• Standby Hydraulic System Pressure Filter

It is positioned downstream of the primary engine-driven pumps (EDPs) and AC motor pumps (ACMPs) to provide continuous filtration of the fluid being delivered to the entire hydraulic network.

Why Choose 7583740?

Choosing the PTI 7583740 is a decision for certified reliability and intelligent economics. As an FAA-PMA part, it has undergone a rigorous approval process, proving its design, materials, and manufacturing processes result in a component that is a safe and effective substitute for the airframe OEM part. Using uncertified filters exposes the aircraft to significant risk, including filter media migration, element collapse under pressure, and poor filtration efficiency, which can lead to silting of servo-valves, premature pump failure, and potential loss of flight control. The PTI 7583740 delivers the OEM-level performance required for flight safety and system integrity, backed by the full authority of the FAA.

The performance of a hydraulic filter like the 7583740 is technically quantified by its Beta Ratio (βx​(c)), a multipass test value defined by ISO 16889. This ratio represents the number of particles upstream of a given size 'x' (in microns) divided by the number of particles downstream of that same size. A rating of β5​(c)=200, for example, indicates that for every 200 particles 5 microns or larger challenging the filter, only one passes through, yielding a 99.5% particle capture efficiency for that size. This precise, repeatable metric is far superior to ambiguous "nominal" ratings. The PTI 7583740's multi-layer, synthetic media leverages a composite structure where different layers perform distinct functions: outer layers capture larger particles via direct interception and inertial impaction, while the dense inner layers capture finer particles through the mechanism of diffusion. This depth filtration approach prevents surface-level clogging, maximizes the element's dirt-holding capacity, and maintains a low pressure drop (ΔP) over its service life, which is critical for protecting the extremely fine tolerances (often 1-4 microns) found in modern hydraulic servo-valves from abrasive wear and stiction.

Note: This filter element is a critical component for maintaining hydraulic system cleanliness and ensuring flight control reliability. Its replacement is mandated by the aircraft maintenance program, typically prompted by a clogged filter indicator (a differential pressure indicator pin). Installation must be performed by a certified A&P mechanic in strict accordance with the Aircraft Maintenance Manual (AMM). Ensure proper o-ring lubrication and torque values are used, and that the hydraulic system is properly serviced and purged of air after installation.

Documentation

Public-facing PMA supplements and technical data sheets may be available. All final determinations of airworthiness and installation eligibility must be made from the FAA's official regulatory documentation and the applicable aircraft maintenance manuals.

Alternate Part number:   AC930E11, EE4-2032, QA0883
FAA Eligibility:   [ Click here ]

Product Overview:

A filter having inlet and outlet connections and designed to be connected in a pipe, tube or hose line. For spin-on, base-mounted filtering devices with integral outer casings, see filter element, fluid. Excludes air conditioner.

Product Features:

Aircraft Eligibility:

• BO 105 Series
• MBB-BK117 A-1
• MBB-BK117 A-3
• MBB-BK117 A-4
• MBB-BK117 B-1
• MBB-BK117 B-2
• MBB-BK117 C-1

This may not be a complete list.