Graco 312350K Reassembling Displacement Pump to Reciprocator Series Code

Reciprocator Repair

Reassembly

1.Clean all the parts in a compatible solvent and inspect them for wear or damage. Use all parts in the repair kit, replace other parts as necessary.

2.Generously lubricate all parts with light, water-resis- tant grease.

3.Install upper ball (106), retaining washer (103) and seal (104), with lips facing up, in extension rod

(107). Screw piston (102) into extension rod (107). Torque the piston to the extension rod to 25-30 ft-lb (34-41 N.m).

4.Install lower ball (106) into end of shovel rod (108). Screw the shovel rod (108) to piston (102). torque the shovel rod to the piston to 25-30 ft-lb (34-41 N.m).

5.Install bearing (111) and seal (112) with lips facing up, in pump cylinder (109). Screw retainer seal

(113)into pump cylinder (109).

6.Screw together pump cylinder (109) and extension tube (114). Use a 7/8 inch crow foot wrench on retainer seal (113). torque to 45-55 ft-lb (61-75 N.m) (FIG. 27).

Reassembling Displacement Pump to Reciprocator

NOTE: If the last letter of the Series Code is A or B, omit Step 2. See FIG. 28 for sample Series Code label.

Series Code

FIG. 28

1.Clamp reciprocator in vise.

2.Replace nylon pellet (207) in threads on bottom of pump adapter (8) (FIG. 29).

113 109

207

8

202

FIG. 27

7.Use a wrench to screw together piston shovel (116) and shovel rod (108). Torque to 115-125 in.-lb (13-14 N.m).

FIG. 29

3.Install new gasket (202) in pump adapter (8) (FIG. 29).

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