Graco 24G621, 3A1315A important safety instructions Repair

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 7