Repair

NOTE: To repair the agitator, see your separate agitator manual.

NOTE: Repair Kit 24J886 is available. Order the kit separately. Kit parts are marked with an asterisk, for example (3*). For the best results use all the parts in the kit.

NOTE: Use multi-purpose lithium based grease where ever lubrication is required. Order Part No. 111920.

1.Disconnect the main air line to the speed controller.

2.Disconnect the tube (27) connecting the speed controller and air motor.

3.Unscrew the adjustment nut (15) from the upper housing (2). Turn the knob (16) fully clockwise (inward) to access the o-ring (18) on the bottom plate of the seat (14). Remove the o-ring and replace with the new o-ring (18*). Lubricate the o-ring.

4.Remove the large o-ring (19) on the upper housing (2). Replace with a new o-ring (19*). Lubricate the o-ring.

5.Unscrew the upper housing (2) from the lower housing (1). The drive shaft (4) and cam arms (8) may come out of the lower assembly.

6.Remove the two ball bearing assemblies (3, 20) from the drive shaft (4). Replace with the new ball bearing assemblies. Install the larger ball bearing assembly (3) on the bottom of the shaft. Install the smaller ball bearing assembly (20*) on the top of the shaft, above the large washer (12).

NOTE: The ball bearing assemblies each consist of one bearing and two washers. Place one washer above the bearing and the other washer below the bearing before installing the assembly.

7.Push the needle (13) out of the upper housing

(2) from the top. Using an o-ring pick, remove the u-cup (11) and o-ring (33) from the upper housing. Lubricate the new o-ring (33*) and u-cup (11*) and install in the upper housing. The lips of the u-cup must face up.

8.Lubricate the new needle (13*) and install in the upper housing (2) from the bottom, being sure to align the ﬂat face on the needle with the mating ﬂat surface in the housing.

9.Ensure that the cam arms (8) align with the groove on the bottom side of the large washer

(12). Install the drive shaft (4) and cam arm assembly into the lower housing (1), making sure the bearing (3*) seats fully in the recess of the housing.

10.Screw the upper housing (2) fully onto the lower housing (1).

11.Turn the adjustment knob (16) all the way counterclockwise (outward). Screw the adjustment nut (15) fully onto the upper housing

(2).

12.Connect the air tubing (27) between the speed controller tube connector (29) and the air motor tube connector (21).

13.Return the unit to service. Connect the main air line to the quick-disconnect ﬁtting (28) on the speed controller.

ti17005a

3A1315A

24G621, 3A1315A specifications

The Graco 3A1315A and 24G621 are innovative sprayers designed to meet the diverse needs of professionals in the painting and finishing industries. Both models come from Graco, a trusted name recognized for its high-quality painting equipment and solutions.

The Graco 3A1315A is noteworthy for its robust construction and efficient performance. This airless paint sprayer is engineered with advanced technology that delivers a consistent spray pattern, making it ideal for a variety of applications such as spraying walls, ceilings, and exteriors. One of its main features is the ProConnect system that allows for easy pump replacement on the job. This reduces downtime significantly, allowing users to maintain productivity. Additionally, it is equipped with a precision spray tip that can easily be swapped out, providing flexibility for different coatings and finishes.

Another appealing aspect of the 3A1315A is its lightweight design, which enhances portability. Despite its lightweight nature, it doesn’t compromise on power—capable of handling thick materials such as latex paint and stains. The adjustable pressure control allows users to customize the flow to suit their specific spraying needs, from fine finishing to heavier applications. Furthermore, the 3A1315A features a durable frame and components designed to withstand the rigors of professional use, ensuring reliability in any environment.

The Graco 24G621, on the other hand, excels in versatility and ease of use. This model is also an airless paint sprayer, featuring an ergonomic design that reduces user fatigue over long periods of operation. The 24G621 is equipped with a Rapid Clean system, simplifying the cleaning process after use, which is essential for maintaining sprayer performance and longevity.

Key technologies in the 24G621 include its powerful motor that ensures consistent spray pressure, allowing users to tackle both small and large projects with ease. It comes with a suction tube that allows for vertical or horizontal spraying, enhancing its utility for various jobs. Furthermore, the model offers a reversible spray tip, allowing users to quickly clear any clogs without stopping work, thereby maximizing efficiency.

In conclusion, both the Graco 3A1315A and 24G621 are exceptional airless paint sprayers that cater to the needs of professionals seeking efficiency, flexibility, and reliability. With their advanced features and user-friendly designs, these models stand out as top choices in the market, making them ideal for a range of painting tasks. Whether for residential or commercial projects, Graco continues to deliver quality solutions that meet the demands of today’s professionals.