Graco DS5, D82, D72, D85, DR2, DR5, DS2, D81, D75 important safety instructions Ball Check Valve Repair

Service

Ball Check Valve Repair

Tools Required

DTorque wrench

D10 mm socket wrench

DO-ring pick

Reassembly

1.Clean all parts and inspect for wear or damage. Replace parts as needed.

2.Reassemble in the reverse order, following all notes in Fig. 11. Assemble the ball checks exactly as shown. The arrows (A) on the fluid covers (101) must point toward the outlet manifold (103).

Disassembly

1

Torque to 80 to 90 in-lb (9 to 10 N-m). See Torque Se- quence, page 30.

NOTE: A Fluid Section Repair Kit is available. Refer to page 25 to order the correct kit for your pump. Parts included in the kit are marked with an asterisk, for example (201*). Use all the parts in the kit for the best results.

NOTE: To ensure proper seating of the balls (301), always replace the seats (201) when replacing the balls.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 11.

1.Relieve the pressure. Disconnect all hoses.

2.Remove the pump from its mounting.

3.Using a 10 mm socket wrench, remove the four bolts (106) holding the outlet manifold (103) to the fluid covers (101). See Fig. 11.

4.Remove the seats (201), balls (301), and o-rings (202) from the manifold.

NOTE: Some models use two o-rings (202), some models use four o-rings (202), and some models do not use o-rings.

5.Turn the pump over and remove the inlet manifold (102). Remove the seats (201), balls (301), and o-rings (202) from the fluid covers (101).

2Arrow (A) must point toward outlet manifold (103).

3Not used on some models.

4Beveled seating surface must face ball (301).

106 1

103

301*

201* 4

202* 3

A 2

101

301*

201* 4 202* 3

102

Fig. 11 112 1 04157B

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