Graco 205626 important safety instructions Displacement Pump Service, Intake Valve. See Fig

Displacement Pump Service

Disassembly

NOTE: Be sure you have all necessary parts on hand. Repair Kit 238751 includes repair parts for the air motor and pump. Use all parts in the kit for the best results. Parts included in the kit are marked with one asterisk, for example (19*), in the text and drawings. See the Parts List on page 14.

1. Flush the pump.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 7.

2.Relieve the pressure.

3.Disconnect the hoses, remove the pump from its mounting, and clamp the air motor base (28) in a vise horizontally by closing the vise jaws on the flange.

Intake Valve. See Fig 6.

1.	Relieve the pressure.
2.	Unscrew the valve housing (111). Remove the
	o-ring (105*), retainer (112), and ball (104).

Displacement Pump. See Fig 6.

NOTE: Clean and inspect all parts for wear or damage as you disassemble them. Replace parts as needed. For best results, always replace all the o-rings and packings when you disassem- ble the pump.

1.Relieve the pressure.

2.Follow steps 1 to 7 of Disassembly on page 9.

3.Carefully inspect the smooth inner surface of the fluid cylinder (110) for scoring or scratches. Such damage causes premature seal wear and leaking. Replace the cylinder as needed.

Reassembly

Do steps 16 through 26 in Air Motor and Throat Service on page 12.

110

112 104

105*

111

Fig. 6

06039

3. Inspect the parts for wear or damage. If the ball is

nicked, replace it. Put grease on the male

threads, and reassemble.

*Included in Pump Repair Kit 238751, which may be purchased separately. The Parts List on page 14 includes all parts in kit.

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