Diffuser Seat Replacement

•See Accessories, page 34.

• Clean parts with a solvent that is compatible with the parts and the fluid being sprayed.

1.Perform Pressure Relief Procedure, page 12.

2.Remove gun from manifold.

3.Remove the air cap retaining ring (8), air cap (30), and spray tip (9).

4.Trigger the gun (or remove cap (27) and springs (28, 29)) to pull the needle housing off the seat while you unscrew the diffuser (10) from the gun body (1).

5.Inspect the o-rings (10d, 10e, 10f) in place. Care- fully remove the o-rings from the diffuser housing (10) and replace if necessary.

6.Remove the seat nut (10c), seat (10b) and seat gas- ket (10g) (Carbide seat only) using a 7/32 in. hex wrench.

7.Inspect the seat (10b) and seat gasket (10g) and replace if necessary.

8.Reinstall the seat gasket (10g) (Carbide seat only), seat (10b), and seat nut (10c). Torque to 45-50 in-lb (5.1-5.7 N•m). Be sure not to overtighten the nut.

When reinstalling the carbide seat, the tapered end of the seat (red side) must point toward the gun tip.

The plastic seat, standard in Model 288044, can be reinstalled in either direction. However, do not reverse the direction of the seat if it is worn; it must be replaced.

Reassembly

1.Non-circulating guns only: Lubricate the backup o-ring (7†) and o-ring (6†) and install them on the fluid outlet port plug (5). Install the plug in the fluid outlet port of the fluid housing (2). See FIG. 18.

2.All guns: Reinstall the gasket (4) in the fluid housing

(2).

3.Install the o-rings (22*, 23*) on the piston (20). Install two o-rings (25*, 26*) on each of the piston stems. Lubricate all the o-rings, the piston, and the piston stems.

Service

4.Align the gasket (15*) as shown in the exploded view in Fig. 8.

If replacing gasket (15), place the gasket on the pis- ton housing (1), then install the fluid housing (2). Torque the two screws (18) to 30 in-lb (3.4 N•m)

5.Insert the piston (20) into the piston housing (1).

6.Remove the protective paper from the sticky side of the gasket (16*) and adhere the gasket to the bot- tom of the piston housing (1), making sure the three holes in the gasket are properly aligned with the matching holes in the housing.

CAUTION

Be sure to keep the needle straight when installing it in the piston housing. If the needle is bent it must be replaced.

7.Insert the needle assembly (14) into the front of the fluid housing (2). Tighten to 50-60 in-lb (5.7-6.8 N•m).

8.Lubricate the threads of the diffuser-seat (10). Screw it into the fluid housing (2) and torque to 65 in-lb (7.3 N•m).

9.Install the needle stop (21) on the needle. Coat the setscrew (19) with semi-permanent anaerobic seal- ant and install the screw into the needle stop.

Torque to 4-5 in-lb (0.45-0.56 N•m). Pull on the nee- dle to make sure it seats fully.

10.Install the springs (28, 29).

11.Lubricate the threads of the piston housing (1). Screw the cap (27) onto the housing until it bottoms out.

12.Model 288053: Install the RAC housing (11) and RAC spray tip (9) in the RAC air cap assembly (30). Position the blue tip guard as desired and screw the air cap assembly onto the gun until it bottoms out. See Parts, page 25.

Assemble the standard tip and air cap.

13.Reinstall the gun on the manifold with the four screws (17). Torque to 65 in-lb (7.3 N•m).

311052H

23

Page 22 Page 24
Page 23
Image 23
Graco 288046, Series B important safety instructions Diffuser Seat Replacement, Reassembly
Page 22 Page 24

288046, Series B specifications

Graco Series B, 288046 is a top-tier product designed to meet the rigorous demands of various applications in industries such as manufacturing, automotive, and construction. Renowned for its reliability and efficiency, this product stands out due to its innovative features and robust technology.

One of the standout features of the Graco Series B, 288046 is its advanced air-powered design. This design allows for smooth and consistent fluid transfer, minimizing downtime and enhancing productivity. The air-driven operation not only offers greater control over the flow rates but also ensures that the system can operate in situations where electric power may be unavailable or impractical. This versatility makes it ideal for various work environments.

The Series B is equipped with a high-performance motor that delivers exceptional power output while maintaining energy efficiency. This feature is particularly advantageous for businesses looking to reduce operational costs without compromising on performance. The motor is engineered to handle different fluid viscosities, making the Series B versatile for use with a wide range of materials, including paints, adhesives, and sealants.

Durability and ease of maintenance are key characteristics of the Graco Series B, 288046. Constructed from high-quality materials, the product is built to withstand harsh conditions, ensuring a long-lasting lifespan. Additionally, its modular design simplifies maintenance and repairs, allowing for quick replacements of components and minimal disruption to operations.

Safety is another paramount consideration incorporated into the Series B design. It features comprehensive safety mechanisms that protect users and equipment alike, reducing the risk of accidents during operation. This is especially crucial in environments where workers are regularly handling hazardous materials.

Graco also emphasizes user-friendly functionality. The Series B showcases intuitive controls, enabling operators to quickly familiarize themselves with the system and operate it efficiently. The product also includes adjustable pressure settings, allowing for precise application suited to specific tasks.

In conclusion, the Graco Series B, 288046 is an exemplary solution for companies seeking a reliable, efficient, and safe fluid handling system. With its advanced technologies, user-friendly features, and robust construction, it offers unmatched performance across various industries, ensuring optimal productivity and safety.
Top Page Image Contents