Graco Inc 249617, 249318 Hydraulic Pump Replacement, 311283D, ti7781, ti7766, ti7777, ti7785

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2.Install new reservoir (64) in frame.

Hydraulic Pump Replacement

5.Reattach return lines (100, 101). Torque to 450 + 10 in-lb (51 + 1.1 N•m).

100

101

ti7781

3.Replace bolts (86) and nuts (84). Tighten bolts. Torque to 125 + 10 in-lb 14 + 1.1 N•m).

4.Connect coolant line to reservoir (64). Torque to 225 in-lb (14.1 N.m).

ti7766

ti7777

6.Reattach suction hose (153). Toque to 600 + 10 in-lb (68 + 1.1 N•m).

153

ti7785

311283D

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Contents Repair Related ManualsKorean patent 4000 psi 27.6 MPa, 275.8 bar Maximum Working PressureFIRE AND EXPLOSION HAZARD SKIN INJECTION HAZARDPRESSURIZED EQUIPMENT HAZARD RECOIL HAZARDEQUIPMENT MISUSE HAZARD MOVING PARTS HAZARDPRESSURIZED ALUMINUM PARTS HAZARD SUCTION HAZARDComponent Identification Component Identificationti7133 ti7107bPressure Relief Procedure OperationGeneral Repair Information GroundingMaintenance ProcedureSpark Plug FrequencyPROBLEM SOLUTIONCAUSE TroubleshootingPROBLEM Displacement Pump Replacement Removal2. Relieve pressure, page Displacement Pump ReplacementInstallation ti77797. Install clip pin 121 to secure 8. Install filter housing 110, page 110121 125 9. Connect suction hose 147 to pump outletPump Power Head Replacement 1. Relieve pressure, pagePump Power Head Replacement ti7847101 100 ti7853ti7777 Hydraulic Motor 1 450 in-lb 51 N.m 2 600 in-lb 68 N.m 3 60 in-lb 7 N.m4 930 in-lb 105 N.m Torqued in 3 steps Hydraulic MotorFilter Housing Replacement Filter Housing Replacementti7845 ti7850Hydraulic Pump Replacement 2. Drain oil, Changing Hydraulic Oil procedure, pageChanging Hydraulic Oil Draining Oilti7796 ti7795ti7783 ti780711. Remove hydraulic pump ti7810 ti7767ti7889 ti7812 ti7111bBelt Removal and Replacement recommended method Installing BeltRemoving Belt Alternate Belt Removal and Installation Replacing Oil Reservoir ti7791 ti7846 ti7786ti7806 ti7781 ti7766Drain Plug 8. Replace cap ti7784Changing Hydraulic Fluid Filter Cooler Replacement Cooler Replacementti7799 ti78024. Replace bar and screws. Torque to 25-30 in-lb 2.8-3.4 N.m Motor Replacement InstallationReplacing Motor Fan Removalti7797 Removing Handle Fixed Mounting optionalRepositioning Handle Securing Unit to Vehicle Bed Technical Data DimensionsSprayer Sound LevelsWarranty mm This manual contains EnglishWarranty Graco reserves the right to make changes at any time without notice