Graco 312350K important safety instructions Displacement Pump Repair, Relieve pressure

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Reciprocator Repair

17.If tie rods (38) were removed, reinstall them with short threaded end up. The other end should be screwed about 9/16” into bottom cylinder cap (32).

NOTE: When reinstalling cylinder (25), be sure port in top cylinder cap (31) and port in the bottom cylinder cap

(32)are in line with each other. Be sure o-rings (13) are in place in the top and bottom and cylinder caps (31 and 32).

18.Place cylinder (25) on cylinder cap (32).

19.Install o-ring (49) in deep, lower groove of piston (22). Install seal (23) over o-ring. Install piston bear- ing (24) around upper groove of piston. Holding pis- ton bearing in place to avoid damage, slide cylinder over piston and press it down.

20.Install cap plate (30).

21.Install capscrew (3), o-ring (39) and washer (2). Install lockwashers (37) and nuts (36). Torque nuts to 28 to 32 ft-lb (38 to 43 N.m).

22.Reinstall fluid tube (45) and fittings (1). Torque fit- tings to 28 to 32 ft-lb (38 to 43 N.m).

NOTE: Make sure the displacement rod (35) on the assembled reciprocator is exposed so the pump can be connected to it.

Displacement Pump Repair

Disassembly

•Be sure you have all necessary parts on hand before you start. If using a repair kit, use all parts in the kit for the best results.

•Displacement Pump Repair Kit 241623 is available. Parts included in the kit are marked with a dagger

(†) symbol in the parts drawing and list, page 25.

1.If possible, flush pump.

2.Relieve pressure, page 7.

3.Follow instructions for Removing Displacement Pump from Reciprocator, page 9.

NOTICE

To avoid damaging shovel tube, do not use slots in tube to tighten or loosen tube.

4.Clamp pump in vise.

5.Use wrench to screw shovel tube (117) off pump cylinder (109).

6.Use a wrench to screw piston shovel (116) off of shovel rod (108).

7.Use strap wrench on pump cylinder (109) to screw it out of extension tube (114).

8.Use a 7/8 inch crow foot connector wrench to screw retainer seal (113) out of pump cylinder (109). Remove bearing (111) and seal (112).

9.Screw the shovel rod (108) out of the piston (102). Remove lower ball (106).

10.Screw piston (102) out of extension rod (107). Remove upper ball (106†), retaining washer (103) and seal (104).

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312350K

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Contents Important Safety Instructions Dyna-StarFire and Explosion Hazard Skin Injection Hazard Hydraulic Power Supply InstallationPump Accessories Hydraulic LinesPressure Relief Procedure GroundingTypical Installation KeyStarting Pump OperationBefore Starting Pump ShutdownTroubleshooting Problem Cause SolutionRelieve pressure, page 5. Check Pump Leaks at the Fluid Fittings ServiceRemoving Displacement Pump from Reciprocator Relieve pressure,Replacing Throat Seals Remove retainer nut 11 and seal 44 from top of pump adapter Reassembly Service Reciprocator Repair Drain oil out of reciprocator Relieve pressure,Reciprocator Repair Reassembly Assembly a Assembly B Displacement Pump Repair Reassembling Displacement Pump to Reciprocator Series Code Reciprocator Repair Displacement Pump Parts Description QtyAssembled / Cutaway View Reciprocator Parts Reciprocator PartsReciprocator Parts Pump Parts FIG Ref No Part No. Description QtyTechnical Data Typical Fluid Outlet PressureDyna-Star Pump Dimensions and Mounting Hole Layout Graco Standard Warranty Graco Information

312350K specifications

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In terms of maintenance, the Graco 312350K is designed for convenience. It features a quick-change filter that helps keep the paint running smoothly, reducing clogs and interruptions during the job. This means that users can focus more on their work and less on upkeep and troubleshooting.

The sprayer also accommodates a variety of paint types, including latex, oil-based paints, and stains, showcasing its flexibility for different projects. With a high painting capacity, the Graco 312350K is particularly suited for larger areas, saving time while still delivering a professional-quality finish.

Overall, the Graco 312350K is an exceptional tool that combines advanced technology with user-friendly features, making it an excellent choice for anyone looking to achieve a flawless paint job. Whether for home improvement projects or professional applications, the Graco 312350K delivers reliability, efficiency, and quality.
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