Graco Series D, 223177 important safety instructions 22n 21n 12n

Service

5.Place a washer (20) on each of the three screws

(19).Assemble the piston as shown for your pump model (see Fig. 4). Place the piston valve seat

(13)in the center of the piston assembly so its lip bottoms out. Continue stacking the parts on the screws (19) as shown. Place the piston ball (22) on the seat (13).

6.Place a piston spacer (42) on each of the screws

(19).Apply thread sealant to the screws and screw the piston assembly into the lower cap (10). Torque the screws (19) to 240–300 in-lb (27–34 N.m). See Fig. 4.

7.Carefully guide the cylinder (9) over the piston assembly and displacement rod until it seats in the outlet housing (24). See Fig. 2.

8.Apply thread sealant and screw the retainer and seat assembly (16) into the intake valve housing

(14).Install the gasket (17*) on the intake valve housing.

9.Place the intake valve ball (15) on the seat of the retainer and seat assembly (16). Install the ball stop pin (18) in the same set of holes from which it was removed. (To readjust ball travel, see Piston and Intake Valve Adjustment on page 4.)

10.Lubricate the tie bolts (30) and install a lockwasher

(31)on each. Install the tie bolts through the intake valve housing (14) and up into the outlet housing

(24).Torque oppositely and evenly to 20–24 ft-lb (27–33 N.m).

11.Torque the packing nut/wet-cup (1) 20–24 ft-lb (27–33 N.m); do not overtighten or you may dam- age the packings. Reconnect the displacement pump to the motor as explained in your separate pump manual. Reconnect the ground wire if it was disconnected during service.

12.Fill the packing nut/wet-cup (1) 1/2 full of Graco Throat Seal Liquid or a compatible solvent. Recon- nect all hoses and return the pump to operation.

1Apply thread sealant and torque to 240–300 in–lb (27–34 N.m).

42

22n

21n

39*

11*

12n

13

11*

39*

21n

20

19 1

06076

Fig. 4

8307983