Graco 119676 Retaining Spring 3900

The Graco 119676 Retaining Spring is a genuine OEM part designed for the GMAX 3900 series sprayers. It helps secure internal components and maintain proper pressure in the system for consistent performance.

Fits GMAX 3900 and GMAX II 3900 models
Durable spring steel for reliable preload
Ensures leak-free, stable spray operation

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Description

Overview & Compatibility for Graco 119676 Retaining Spring

Compatible Machines

GMAX II Graco GMAX 3900 (GMAX3900)
Hi-Boy Graco GMAX II 3900 Airless Paint Sprayer
17E827 Graco GMAX II 3900 Standard Series Gas Airless Sprayer, Hi-Boy

Fitment note: This spring is used in the 3900-series filter/control box assembly. For other 3900 variants, match by part number 119676 in your parts diagram.

What is the Graco 119676 Retaining Spring?

The Graco 119676 Retaining Spring (3900) is an OEM spring that maintains axial preload within the filter/control box of select GMAX 3900 airless sprayers. By holding seals and components securely in place under pressure, it supports steady flow, consistent pressure, and reliable filtration performance.

Key Benefits

OEM fit and function for GMAX 3900 family units.
Helps maintain seal compression for leak-free, consistent spraying.
Durable spring steel for repeatable preload across pressure cycles.

Quick Specs

Part Number	119676
Also Called	Spring, Retaining (3900)
Outer Diameter (approx.)	~ 1-3/16"
Inner Diameter (approx.)	~ 1-7/64"
Wire / Section Notes	~ 3/64" wire; ~ 0.1385" at widest (3 coils)
Application Area	Filter / control box & related retention in GMAX 3900 assemblies

Install & Service Tips

Always depressurize and follow Graco safety procedures before service.
Inspect mating seals/O-rings and replace if worn for best results.
Verify spring sits squarely in its seat to maintain correct preload.

Frequently Asked Questions

It’s specified for GMAX 3900 family units and select 3900-series assemblies. Check your parts diagram for part 119676 to confirm fit on your exact model/variant.

Inconsistent pressure, filter cap loosening, or recurrent weeping at the filter housing after seal replacement can point to a fatigued spring.

It’s smart to inspect the filter, O-rings, and diffusion tube. Replace worn components to restore full sealing and filtration performance.

Yes—119676 is a genuine Graco OEM component designed for correct preload and long service life.

Approximate dimensions commonly referenced: OD ~ 1-3/16", ID ~ 1-7/64", wire ~ 3/64"; width at three-coil span ~ 0.1385".