Graco Inc 311283D, 249318, 253472, 253471, 249617 Problem, Cause, Solution

Page 8

 

 

Troubleshooting

 

 

 

PROBLEM

CAUSE

SOLUTION

 

 

 

 

 

 

The sprayer overheats

Paint buildup on hydraulic compo-

Clean

 

nents

 

 

 

 

 

Oil level is low

Fill with oil.

 

 

 

Spitting from gun

Air in fluid pump or hose

Check for loose connections on

 

 

siphon assembly, tighten, then rep-

 

 

rime pump.

 

 

 

 

Loose intake suction

Tighten.

 

 

 

 

Fluid supply is low or empty

Refill supply container.

 

 

 

Excessive hydraulic pump noise

Low hydraulic fluid level

Turn sprayer OFF. Add fluid*.

 

 

 

*Check hydraulic fluid level often. Do not allow it to become too low. Use only Graco approved hydraulic fluid, page 6.

 

 

 

8

311283D

Image 8
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 TroubleshootingCAUSE 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 ti7847ti7777 101 100ti7853 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 ti7111bRemoving Belt Belt Removal and Replacement recommended methodInstalling Belt Alternate Belt Removal and Installation Replacing Oil Reservoir ti7806 ti7791ti7846 ti7786 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 Repositioning Handle Removing HandleFixed Mounting optional 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