Graco 258875, 258870, 258866. 258863. 3A0159E Inlet Valve Cleaning, Removal, Installation

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Inlet Valve Cleaning

Removal

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

ti14994a

ti14999a

2. Remove material cup and suction tube.

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

ti15505a

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).

Installation

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.

a

b c

d

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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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3A0159E

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Contents 3A0159E Table of Contents Extension Cords Extension Cord Gauge Extension Cord LengthFire and Explosion Hazard Equipment Misuse Hazard TrueCoat Component Identification TrueCoat Plus Component Identification Using Electrical Cords Power CordGrounding and Electrical Requirements Extension Cord RequirementsPressure Relief Procedure Trigger LockControl Lever Position Setup Installing Suction TubeCleanup/Storage Overheating ProtectionSprayer Setup Materials Starting a New Job or Refilling the CupShoulder Strap Installation Reversible Tip Selection ChartThin Medium Heavy Triggering Sprayer Aiming SprayerUnclogging Spray Tip/Guard Assembly Shutdown and Cleaning Flushing SprayerTi14991a Cleaning Sprayer Exterior StorageTips Replacement Parts and Kits Ref. PartPart Troubleshooting Problem Cause SolutionSpray Pattern Diagnostics Problem Cause Solution See Reversible Tip Selection Chart See Shutdown and Cleaning,See Install Tip/Guard Assembly, Alternate Priming Method Inlet Valve Cleaning InstallationRemoval Technical Data SprayerTechnical Data Technical Data 3A0159E Graco Standard Warranty Graco Information