The GRACO 18H057 Kit is a replacement assembly that includes solenoid, potentiometer (pot), trigger, and switch components. It is designed for use in GRACO airless paint sprayers, specifically for models like the Ultra QuickShot. The kit is typically constructed from durable plastics and metals to ensure reliable operation in demanding spray environments. Its primary function is to control the trigger mechanism and electrical switching within the spray gun assembly.

Key Features:

• Trigger solenoid kit
• Durable plastics and metals
• GRACO Ultra QuickShot (e.g., 20B473) and similar airless sprayers
• Ease of maintenance (kit includes all necessary components for replacement)
• Reliable electrical switching
• Designed for quick installation and replacement

Applications:
Used in GRACO airless paint sprayers for controlling the trigger mechanism and electrical functions during spray operations.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the spray equipment.
• Follow the equipment manual for detailed installation steps.
• Ensure proper alignment of the potentiometer wires and adjustment knob.
• Hand-tighten set screws and torque nuts as specified (e.g., 10 in-lbs for solenoid/trigger assembly).
• Verify all wires are routed correctly and components are fully seated in the gun housing.
• Regularly inspect for wear or damage to trigger and solenoid components.
• Replace the kit as a whole for consistent performance.
• Keep wiring channels clear and secure.