Inlet Valve Cleaning, Removal | Graco 258880, 258864 specification

Inlet Valve Cleaning

1.Engage trigger lock and pull relief valve UP to release pressure.

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2. Remove material cup and suction tube.

3.Hold sprayer upside-down and use wrench or socket to loosen and remove inlet fitting, inlet valve, and spring.

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NOTE: Make sure the spring also comes out. Use needle-nose pliers to remove if needed. Inlet cavity should be completely empty (as shown below).

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Inlet Valve Cleaning

4.Clean as much excess material from pump cavity as possible. Make sure you also clean spring (a), o-ring (c), and top of inlet fitting (d).

NOTE: Before installing, make sure o-ring (c) is installed on inlet valve (b).

1.Place inlet valve (b) with spring (a) on top of inlet fit- ting (d). Push inlet fitting up into pump cavity.

b c

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2.Hold inlet in place and turn sprayer upside-down. Remove inlet fitting and visually check to see that inlet valve has seated correctly.

3.Replace inlet fitting and use wrench and socket to tighten to 10 ft-lb.

NOTICE

Do NOT over-tighten inlet fitting. Damage to the equipment will occur.

4.Use your Fine-Finish Optimizer cleaning tool to lightly push on inlet valve to make sure it moves up and down freely.

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