081-00100 - Cleveland Wheels and Brakes Bleeder Seat

081-00100 – Cleveland Wheels and Brakes Bleeder Seat

Available now on the Airparts.aero Marketplace.

Overview

The Cleveland 081-00100 is a genuine Original Equipment Manufacturer (OEM) bleeder valve seat, a high-precision component essential for the overhaul and maintenance of numerous Cleveland brake master cylinders. This is not a simple washer; it is a replaceable, press-fit insert that provides the critical female conical sealing surface for the brake bleeder screw. Fabricated from a specific brass alloy, the 081-00100 is designed to be a sacrificial component, ensuring that any wear from repeated tightening of the steel bleeder screw occurs on this inexpensive, replaceable seat rather than on the expensive master cylinder housing.

Key Features

• Replaceable Sealing Surface: The primary engineering feature is that it provides a replaceable seat. Over time, the sealing surface can be damaged by over-torquing or contaminants. This design allows for the complete restoration of the bleed port's sealing integrity without replacing the entire master cylinder.
• Precision Brass Construction: Manufactured from a high-quality brass alloy. Brass is specifically chosen because it is softer than the steel bleeder screw, ensuring it is the component that deforms or "coins" to create a perfect seal, and that it is the primary wear item in the sealing pair. It also offers excellent corrosion resistance.
• Interference Fit Design: The outer diameter of the seat is precision-machined to create a secure interference fit when pressed into the master cylinder body. This ensures the seat remains locked in place and prevents any fluid from leaking around it.
• Perfect Sealing Angle: The internal conical seat is machined to a precise angle to perfectly match the tapered tip of the corresponding bleeder screw (P/N 079-00300), creating a reliable metal-to-metal seal capable of holding high hydraulic pressures.
• Genuine Cleveland OEM Part: As the genuine part specified by Cleveland Wheels & Brakes, it guarantees the correct material composition, dimensions, and hardness required for a certified, airworthy brake system overhaul.

Technical Specifications

• Part Number: 081-00100
• Manufacturer: Cleveland Wheels & Brakes (Parker Hannifin)
• Component Type: Press-Fit Bleeder Valve Seat
• Material: Brass Alloy
• Installation Method: Press-fit into master cylinder body bleed port.
• Mating Component: Cleveland Bleeder Screw P/N 079-00300
• Certification: FAA Production Approval

Aircraft Compatibility

The 081-00100 is the standard OEM bleeder seat for some of the most common master cylinders used across the entire general aviation fleet.

• Common Master Cylinder Models:
  • Cleveland 10-5, 10-24, 10-30, 10-35 Series
• Common Aircraft Manufacturers:
  • Cessna: 152, 172, 182, 206, 210, etc.
  • Piper: Cherokee, Warrior, Archer, Arrow, etc.
  • Beechcraft: Bonanza, Baron, etc.
  • Mooney: M20 series
  • And countless other aircraft utilizing these Cleveland master cylinders.

Applications

The 081-00100 is a critical component for the overhaul and repair of brake master cylinders:

• Master Cylinder Overhaul: A mandatory replacement item during the complete overhaul of a Cleveland master cylinder to ensure the integrity of the bleed port.
• Repair of Leaking Bleeder Valves: The primary solution for fixing a bleed port that no longer seals properly due to a damaged or corroded seat.

Why Choose 081-00100?

A leaking bleeder screw represents a critical failure in the hydraulic system, leading to a loss of fluid and braking capability. The replaceable 081-00100 seat is an intelligent design feature that makes the master cylinder indefinitely serviceable. Using a genuine Cleveland OEM part ensures that the brass alloy has the correct hardness and that the sealing surface is machined to the perfect angle. A non-certified part could be too hard (damaging the bleeder screw), too soft (deforming prematurely), or have an incorrect angle, all of which would result in a failed seal. For a flight-critical brake system, trust only genuine Cleveland components.

Order Your 081-00100 Bleeder Seats Now

Properly overhaul your aircraft's brake master cylinders with genuine OEM components. Visit Airparts.aero to order your Cleveland 081-00100 bleeder seats today.

The 081-00100 bleeder seat is a prime example of sacrificial design in engineering. The master cylinder housing is a high-value, complex machined part. By creating a sealing system where the point of highest stress and wear is a small, inexpensive, and replaceable component, the design preserves the life of the main housing. The brass material of the 081-00100 seat is chosen for its specific properties in relation to the steel bleeder screw. When torqued, the harder steel screw forces the softer brass seat to plastically deform on a microscopic level, creating a perfect impression and thus a perfect seal. This ensures that any "damage" from the sealing action is imparted onto the replaceable seat, not the screw or the master cylinder casting, allowing the primary components to last through multiple overhaul cycles.

Note: This component requires specialized tools for proper removal and installation. It must be pressed into the master cylinder body to a specific depth without being damaged. This task should only be performed by a certified A&P mechanic or at a qualified component overhaul facility in accordance with the Cleveland maintenance manual.