Graco Inc 308870 dimensions Displacement Pump, Removal, Repair, Installation

Displacement Pump

Removal

1.Flush pump.

2.Fig. 16. Cycle pump with piston rod (222) in lowest position.

3. Relieve pressure; page 4.

4.Fig. 16. Remove suction tube (30) and hose (33).

222

33

5.Fig. 17. Use screwdriver to push out pump pin (101).

230

101

Fig. 17 9019A

6.Fig. 18. Loosen locknut by hitting firmly with a 20 oz (maximum) hammer. Unscrew pump.

Fig. 16

Repair

30 9024A

Fig. 18 9022A

See manual 308798 for pump repair instructions.

Installation

WARNING

If pin works loose, parts could break off due to force of pumping action. Parts could project through the air and result in serious injury or prop- erty damage. Make sure pin (101) and retaining clip (230) are properly installed. Clip must engage groove in pin.

CAUTION

If the pump locknut loosens during operation, the threads of the bearing housing will be damaged. Make sure locknut is properly tightened.

1.Fig. 19. Pull piston rod out 1.0 in. Screw in pump until holes in housing plates and piston rod align.

1.0 in.

Fig. 19 9020A

2.Fig. 17. Push pin (101) into hole until retaining clip (230) engages pump pin groove.

Fig. 20. Screw jam nut down onto pump until nut stops. Screw pump up into pump plate until it stops. Back off pump one full turn and align pump outlet to back. Tighten jam nut by hand, then tap 1/8 to 1/4 turn with a 20 oz (maximum) hammer to approximately 75" 5 ft–lb (102 N￿m).

Fig. 20 9021A

Fig. 21. Fill packing nut with Graco TSL until fluid flows onto the top of seal.

Fig. 21		9023A
	￿08870	15