Repair, Replacing Pilot Valves | Graco 3A1334E guide

Repair

Replacing Pilot Valves

Reference letters shown in the following instructions refer to Typical Installation diagram, page 7. Part num- bers refer to the Parts pages beginning on page 15.

1.Stop pump at the middle of its stroke.

2.Relieve pressure, page 11.

3.Disconnect the air line (M).

4.Use a 10 mm socket wrench to remove the old pilot valve (20).

5.Lubricate o-rings and install the new pilot valve (20). Torque to 95-105 in-lb (11-12 N.m).

3A1334E

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Graco 3A1334E important safety instructions Repair, Replacing Pilot Valves

Contents

Manual Number Language Important Safety InstructionsRelated Translated Manuals Oil Pump Models Pumps Grease Pump Models Skin Injection Hazard Equipment Misuse Hazard Installation Grounding Key FIG Typical InstallationStationary Mountings Stationary Mounting Layout Installation GuidelinesInstalling Outlet Hose FIG Pump Mounting Air Line and Accessories Follow Plate Grease Models Only Thermal Relief Theory of Operation OperationThermal Induced Pressure Relief Oil pumps only Start-up Pressure Relief ProcedureDetermining Output Pressure Using the Air Regulator Is for Oil Pumps Only Relieve pressure, Operation Repair Replacing Pilot Valves Parts Description Qty Kit No Description Qty Throat and Piston Seal Replacement Kit 24H853 FIGRelated Oil Pump Kits Kits 21 20 Grease Pump Models 24G600 24G608 MUFFLER, 3/8 Related Grease Pump Kits Throat and Piston Seal Replacement Kit 24H854 FIGRing and Seal Replacement Kit 24H856 FIG Kits, Air Valve Seal Kit 24H851 Oil or Grease Pump Air Valve Repair and Replacement KitsReplace Seals or Rebuild Air Valve Kits Air Valve Repair Kit 24H798 Pilot Valve Replacement Kit 24H749 Oil Models TroubleshootingProblem Cause Solution Replace gasket Grease Models Relieve pressure Technical Data 31 or 51 Oil Models Dimensions Performance Curve Oil Models Grease Models Performance Curve Tested with ISO 46 Hyd Oil Dimensions 3A1334E Graco Standard Warranty Graco Information