Description
The Woodward 8290-133 serves as a specialized actuator drive within the Electrically Powered Governor (EPG) series, specifically engineered to interface with the 4024 model. This unit is designed to accommodate the larger terminal lever requirements featuring .500-36 serrations, ensuring a robust mechanical connection for precise fuel control. As a key component of the Woodward 8290-133 lineup, this model is built for high-performance applications where mechanical stability and accurate positioning are paramount.
Product Specifications
- Compatible Model: 4024 Series
- Terminal Lever Specification: .500-36 Serrations
- Wiring Limitations: 22 ft (12 AWG) / 8 ft (14 AWG)
- Operating Temperature: -40 °C to +95 °C
- Dimensions: 180 mm × 150 mm × 130 mm (approximate)
- Weight: 3.4 kg
- Country of Origin: United States
Frequently Asked Questions
💡 Why is the terminal lever specification (.500-36 serrations) critical? The .500-36 serration pattern is a precise mechanical interface. It ensures that the linkage between the actuator drive and the fuel control lever remains slip-free under the vibration and torque loads typical of prime mover operation. Using a lever with incorrect serrations will lead to mechanical play, resulting in unstable engine speed regulation.
🛠 What is the reason for the restricted wiring lengths (22 ft / 8 ft)? The 4024 actuator drive configuration is highly sensitive to electrical resistance. These specific length constraints are calculated to prevent voltage drop and signal delay. Exceeding these limits can compromise the actuator’s response time during transient loads, potentially causing the engine to hunt or oscillate.
⚡ Is this actuator drive compatible with other EPG series models? The 8290-133 is specifically optimized for the 4024 model’s electrical and mechanical demands. While it functions within the EPG ecosystem, it should not be swapped with drives intended for different actuator types without verifying the specific current draw and feedback requirements.
🔋 What maintenance is recommended for the serrated connection? Periodically inspect the lever and serrated shaft for signs of wear or movement. Ensure the mounting bolt is torqued to the manufacturer’s specification to prevent the interface from degrading over time, which maintains the integrity of the governor’s control loop.
Recommended Woodward Actuator Series Models
- 8256-010 (Clockwise Rotation)
- 8256-011 (Counter-Clockwise Rotation)
- 8256-016 (Standard EPG Actuator)
- 8256-017 (Compatible EPG Actuator)
- 8256-021 (Compatible EPG Actuator)
- 8256-022 (Compatible EPG Actuator)
- 8256-032 (Load-Sharing Actuator)
- 8256-080 (CCW with Spring Return)
- 8256-087 (Sealed Position Feedback)
- 8290-001
