Graco 15D366 Hopper Bracket Isolator Pad

Graco 15D366 Hopper Bracket Isolator Pad — Detailed Description

The Graco 15D366 is a genuine OEM isolator pad designed for use on the hopper bracket of specific Graco texture or airless sprayer systems. This small but critical component reduces vibration, prevents metal-to-metal contact, and helps protect both the hopper and the machine’s frame during operation.

Main Features & Benefits

• High-quality isolation pad that minimizes vibration transmission.
• Durable material helps extend the life of the hopper bracket and mounting points.
• OEM part ensures perfect fit and compatibility with designed Graco sprayers.
• Easy to install — typically placed between hopper bracket and frame.
• Cost-effective replacement part to avoid premature wear on more expensive components.

Compatibility & Usage

The 15D366 pad is listed in Graco parts manuals for several sprayers, confirming its use in systems where hopper vibration needs to be controlled:

• Appears in the Graco RTX5000 / RTX5500 sprayer parts list. 
• Referenced in Graco’s service/parts manual as a part that mounts under the hopper bracket. 

Technical Details

Installation & Maintenance

1. Turn off and depressurize the sprayer before performing any maintenance.
2. Remove the hopper or loosen the bracket to access the pad location.
3. Replace the old pad with the 15D366 isolator pad, ensuring correct alignment under the bracket.
4. Tighten bracket bolts to the recommended torque while keeping the pad properly seated.
5. Inspect periodically for compression, tearing, or degradation — replace if worn.

Why Replace It?

• Over time, vibration during spraying can compress or damage the pad, reducing its effectiveness.
• A worn isolator pad may allow excessive movement, which can lead to metal fatigue on the hopper bracket or frame.
• Replacing with a genuine OEM pad ensures the structural integrity and longevity of your sprayer setup.

Frequently Asked Questions