Service

Service

Refer to Parts Drawing, page 5, for following instruc- tions.

Disassembly

9.Push plunger rod (15) through seal (4). Be careful; seat (14), ball (2), and copper gasket (6) will fall out bottom.

10.Replace all parts included in service kit 243446.

11.Reassemble valve.

1.Relieve the pressure. See Pressure Relief Proce- dure on page 3.

2.Check all parts thoroughly when disassembling and carefully replace any worn or damaged parts.

3.Remove bottom seat adapter (10) from grease fun body (9).

4.Remove acorn nuts (1) and bolts (17) from trigger guard (12). Remove trigger guard (12).

5.Remove outlet adapter (7).

6.Remove hex nuts (5).

7.Remove yoke (16).

8.Remove rod guide (18) from grease gun body (9).

To reduce the risk of serious injury after servicing valve, always make sure the valve is in the closed position with trigger released.

12.With trigger in free position tighten bottom nut (5) until yoke bottoms out on rod guide (this is the max- imum flow setting. (FIG. 1) Back off nut approxi- mately 1/8 turn. Hold bottom nut in place and securely tighten top nut.

13.If additional adjustment is desired, follow adjustment procedure on page 3.

14.For specific operational problems, see Trouble Shooting.

Troubleshooting

Problem

Cause

Solution

 

 

 

 

Damaged Ball

Install Service Kit

 

 

 

Grease Flows with trigger release

Damaged Seat

Install Service Kit

 

 

Out of Adjustment

Readjust, see Adjustment, page 3

 

 

 

 

 

Missing Ball

Install Service Kit

 

 

 

 

Out of Adjustment

Readjust, see Adjustment, page 3

 

 

 

No grease flow when trigger pulled

Plugged Seat

Clean seat

 

 

 

 

Disassembled Plunger and Rod

Reassemble

 

 

 

 

Loose Bottom Adapter

Tighten adapter (FIG. 1)

 

 

 

Grease is leaking out of bottom of gun

Missing Copper Gasket

Install Service Kit

 

 

 

 

Worn Copper Gasket

Install Service Kit

 

 

 

Grease is leaking out of the top of gun

Worn Seal in top of gun

Install Service Kit

 

 

 

Short seal life

Worn plunger rod

Install Service Kit

 

 

 

 

Bent guard

Replace guard

 

 

 

Trigger will not move

Bent pivot pin

Install Service Kit

 

 

 

 

Damaged handle

Replace trigger

 

 

 

4

309032L

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Graco 24H403, 24H406, 24H399, 24H404, 24H402, 242005, 24H400 Service, Troubleshooting, Disassembly, Problem Cause Solution
Page 3 Page 5

242056, 242058, 242005, 24H399, 242057 specifications

The Graco 24H series, including models 24H400, 24H406, 24H403, 24H402, and 24H404, represents a powerful lineup in the world of airless paint sprayers. These models are designed for contractors and DIY enthusiasts who require top-notch performance and reliability for various painting tasks.

One of the main features of the Graco 24H series is their high-efficiency airless design, which allows for a consistent, smooth finish without the need for thinning paints or stains. These sprayers can handle a variety of materials, from latex paints to heavy coatings, making them incredibly versatile.

The 24H400 model boasts a robust motor that delivers pressure up to 3,600 PSI, providing the strength required to distribute paint evenly across surfaces. The inclusion of Graco’s SmartControl technology ensures a steady spray pattern and pressure control, enhancing the sprayer’s user-friendliness.

Meanwhile, the 24H406 model is equipped with additional features designed for larger jobs. It includes an extended reach and capacity, which allows for efficient coverage of larger areas, reducing the time spent on projects. This model also features a reversible spray tip, making it easy to clear clogs and maintain uninterrupted operation.

The 24H403, on the other hand, emphasizes portability without sacrificing power. With an ergonomic design and lightweight build, this model is perfect for contractors who are frequently on the move, allowing for easy transport from one job site to another.

The 24H402 model is particularly focused on residential projects. It’s engineered to handle detailed work with precision. Its fine finish tip option is ideal for achieving a professional-grade appearance on trim and smaller surfaces.

Lastly, the 24H404 offers advanced technology for spray pattern adjustment, allowing users to switch between various spray settings depending on the project requirements. This model also includes a sturdy stand for improved stability during operation.

Overall, the Graco 24H series combines efficiency, versatility, and innovative technology, making it a reliable choice for both professionals and hobbyists seeking high-quality painting solutions. Each model caters to specific needs and preferences, ensuring that users can find the perfect fit for their projects. With robust construction and advanced features, the Graco 24H series is a commendable investment for achieving a flawless finish.
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