Graco Inc 308639L important safety instructions Ball Check Valve Repair

Page 14

Service

Ball Check Valve Repair

Tools Required

DTorque wrench

D15-mm socket wrench

DO-ring pick

NOTE: A Fluid Section Service Kit is available. See the Repair Kit Matrix on page 21 to find the correct kit for your pump. Parts included in the kit are marked with an asterisk in the Parts Drawing on page 22, for example (201*). Use all the parts in the kit for the best results.

NOTE: To ensure proper seating of the balls (201), always replace the seats (101) when you replace the balls.

Disassembly (See Fig. 6)

1.Relieve the pressure.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 9.

WARNING

Some of the pump parts and assemblies are heavy. Use proper lifting equipment and techniques.

2.Using a 15-mm socket wrench, remove the bolts

(54)holding the outlet manifold (50) to the fluid covers (51).

3.Remove the seats (101), balls (201), and o-rings

(102)from the fluid covers (51).

4.Remove the inlet manifold bolts (54).

5.Remove the seats (101), balls (201), and o-rings

(102)from the fluid covers (51).

Reassembly (See Fig. 6)

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. 6. Be sure all parts are assembled

 

exactly as shown.

1Torque to 55 to 60 ft-lb (75 to 81 NSm). See Torque Sequence, page 25.

2The ball seat is on the same side as the step for the o-ring (102).

3To ensure proper seating, visually check that the manifold (50 or 53) is centered on the fluid covers (51) before you tighten the screws (54).

54 1

50 3

201

102

101 2

51

54 1

201

102

101 2

53 3

NOTE: To ensure proper seating, visually check

that the manifold (50 or 53) is centered on the fluid

covers (51) before you tighten the screws (54).

Fig. 6

06325

14 308639

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Contents Instructions Parts List ContentsEquipment Misuse Hazard 308639Hazardous Fluids Tightening Screws Before First Use Grounding InstallationGeneral Information Hazardous FluidsFLOOR-MOUNT Typical Installation KEYFluid Lines MountingsAir Line Fluid Outlet LineAir Exhaust Ventilation Changing Manifold OrientationFluid Pressure Relief Valve Toxic Fluid HazardVenting Exhaust AIR Operation Pressure Relief ProcedureStarting and Adjusting the Pump Flush the Pump Before First UseLubrication MaintenancePreventive Maintenance Schedule Flushing and StorageTroubleshooting Problem Cause SolutionDisassembly See Fig Relieve the pressure ServiceRepairing the Air Valve Tools RequiredReassembly Ball Check Valve Repair Diaphragm Repair Disassembly Relieve the pressure Removing and Replacing Bearings and Air Gasket on302 301 Removing and Replacing Bearings and Air Gasket See Fig Detail of Bearings Through hole must be on bottom232505, Aluminum 3275 Pump, Series C Pump MatrixHusky 3275 Pumps, Series C 24D619, Aluminum 3275 Pump, Series aRepair Kit Matrix For Husky 3275 Pumps, Series CParts Drawing 303 301 302 61 2 114 201 102 101 201* 102Fluid Section Parts List Matrix Column Parts ListsAir Motor Parts List Matrix Column Digit Description QtyBall Parts List Matrix Column Technical DataSeat Parts List Matrix Column Diaphragm Parts List Matrix ColumnTorque Sequence Pump Mounting Hole Pattern Dimensional DrawingsFront View Side ViewFluid Pressure Curves Performance ChartsFluid Outlet PRESSURE--psi MPa, bar AIR CONSUMPTION--scfm cubic meters/min Air Consumption Curves308639 Toll Free, 612-623-6921, 612-378-3505 Fax Graco WarrantiesGraco Information Graco Headquarters Minneapolis
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