SprayTECH GPX 750 0509004 Owner'S Manual Download Page 1

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Printed in the U. S. A.

GPX 750

G a s Pi s to n Pu m p

SprayTECH

1770 Fernbrook Lane
Minneapolis, MN 55447

Technical Assistance: 1-800-292-4637

Order Entry: 1-800-443-4500

Fax: 1-800-525-9501

w w w. s p r ay t e ch i n c . c o m

Owner’s Manual

Model Number 0509004

Summary of Contents for GPX 750 0509004

Page 1: ...No 0509811A Printed in the U S A GPX 750 Gas Piston Pump SprayTECH 1770 Fernbrook Lane Minneapolis MN 55447 Technical Assistance 1 800 292 4637 Order Entry 1 800 443 4500 Fax 1 800 525 9501 www spraytechinc com Owner s Manual Model Number 0509004 ...

Page 2: ...knob must be turned to PRIME to relieve the pressure Refer to the PRESSURE RELIEF PRESSURE described in the pump manual ALWAYS keep the tip guard in place while spraying The tip guard provides some protection but is mainly a warning device ALWAYS remove the spray tip before flushing or cleaning the system The paint hose can develop leaks from wear kinking and abuse A leak can inject material into ...

Page 3: ... a paint hose Replace it with another grounded high pressure hose All hoses swivels guns and accessories must be rated at or above 3300PSI 228 BAR Do not spray outdoors on windy days Wear clothing to keep paint off skin and hair Always unplug cord from outlet before working on equipment Do not use this equipment to spray water or acid Do not lift by cart handle when loading or unloading CAUTION Ga...

Page 4: ...system with mineral spirits before you begin spraying Always keep the trigger lock on the spray gun in the locked position while preparing the system 1 Place the siphon tube into a container of mineral spirits that has a flash point of 60ºC 140ºF or above 2 Place the return hose into a metal waste container 3 Turn the pressure control knob fully counterclockwise to its lowest pressure setting 4 Mo...

Page 5: ...way from the gas tank WARNING WARNING NOTE Make sure that the spray gun does not have a tip or tip guard installed c Close the engine choke lever d Holding the frame with one hand pull the starter rope rapidly and firmly Continue to hold the rope as you let it return Pull and return the rope until the engine starts 7 Turn on the sprayer by moving the pump ON OFF switch to the ON position 8 Slowly ...

Page 6: ...cs or high solid coating remove the gun filter and high pressure filter screens WARNING 6 SprayTECH All rights reserved Keep the spray gun perpendicular to the surface otherwise one end of the pattern will be thicker than the other The spray gun should be triggered by turning it on and off with each stroke This will save paint and avoid paint buildup at the end of the stroke Do not trigger the gun...

Page 7: ...vent coming out of the gun is clean NOTE For long term or cold weather storage pump mineral sprits through the entire system WARNING WARNING CAUTION WARNING SprayTECH All rights reserved 7 17 Follow the Pressure Relief Procedure found in the Operation section of this manual 18 Store the sprayer in a clean dry area Do not store the sprayer under pressure Cleaning the Spray Tip 1 Flush the gun with ...

Page 8: ... plug Gap the plug 0 025 0 030 0 7 0 8 mm Make sure to use a spark plug wrench when installing and removing the plug NOTE For detailed engine specifications and maintenance refer to the separate engine manual supplied with this sprayer WARNING 8 SprayTECH All rights reserved Replacing the Filter 1 Loosen and remove the filter body by hand 2 Remove the filter and core spring from the filter housing...

Page 9: ...ing tab on the EPC board connector will mate with the slot on the potentiometer wires connector The connector on the end of the potentiometer wires and the connector on the EPC board will mate only one way Do not force the connectors together 14 Carefully place the EPC assembly over the EPC housing taking care not to pinch any wires 15 Install the four screws that secure the EPC assembly to the EP...

Page 10: ...d The slider assembly also should be replaced if the connecting rod bearing shows signs of wear c Any parts that will be reused should be cleaned thoroughly including the connecting rod Also clean the crankshaft pin that the connecting rod bearing rides on d If the slider bushing requires replacement a press must be used Position the pump housing so that the bushing is facing the arbor on the pres...

Page 11: ... SprayTECH Authorized Service Center for re calibration EPC Housing EPC Assembly Screw EPC Assembly EPC Board WARNING CAUTION NOTE While sliding the pump housing into place the crankshaft pin will begin to protrude from the bearing in the center of the pump housing Position the slider assembly so that as the crankshaft pin protrudes from the main bearing it engages the connecting rod bearing Repla...

Page 12: ...uid Hose Fitting Cart 12 SprayTECH All rights reserved 7 Slide the pump and gear housings away from the engine to disengage them from the clutch housing 8 Locate the clutch armature assembly on the end of the engine shaft Note the two set screws as well as the unused threaded hole in the taper lock bushing at the center of the clutch hub 9 Using an 1 8 hex wrench remove the two set screws from the...

Page 13: ...ling the Clutch Rotor Assembly Clutch Field and Drive Shaft Assembly 1 If the drive shaft grease seal was removed press a new seal into the bore from which the old seal was removed 2 From the clutch side of the gear housing insert the drive shaft assembly into the bore through the grease seal and through the ball bearing on the gear side of the gear housing 3 From the gear side of the gear housing...

Page 14: ...h the port and into the gap between the clutch armature and the clutch rotor The 016 feeler gauge should fit in the gap The 035 feeler gauge should not fit in the gap b Pull the engine pull cord several times to rotate the clutch armature checking the gap with each feeler gauge between each pull c If the 016 gauge does not fit or the 035 gauge does fit at any checkpoint the gap must be readjusted ...

Page 15: ...o ring outlet valve seal and outlet valve ball that came with the repacking kit Apply blue Loctie to the threads of the outlet valve retainer Torque the outlet valve retainer to 150 in lbs Never use a wrench on the piston rod itself This could cause damage to the piston and cause leakage 15 Insert the new piston guide into the retainer nut Thread the retainer nut into the fluid section housing unt...

Page 16: ...tion following the Servicing the Fluid Section procedure in the Maintenance section of this manual 9 Reverse or replace the valve seats following the Servicing the Fluid Section procedure in the Maintenance section of this manual 1 Repack the pump following the Servicing the Fluid Section procedure in the Maintenance section of this manual 2 Replace the piston rod following the Servicing the Fluid...

Page 17: ...1 Replace hose with a minimum of 50 of 1 4 grounded textile braid airless paint spray hose 2 Replace the spray tip following the instructions that came with the spray gun 3 Rotate the pressure control knob counterclockwise to decrease spray pressure 1 Replace the spray tip with a new or smaller spray tip following the instructions that came with the spray gun 2 Rotate the pressure control knob to ...

Page 18: ...VERTISSEMENT DANGER RISQUES D EXPLOSION OU D INCENDIE Les vapeurs dégagées par le solvant ou la peinture sont explosives et inflammables et peuvent causer des corporels sérieux ou dommages matériels MESURES PRÉVENTIVES Veiller à éviter toute accumulation de vapeurs inflammables en vous assurant que la zone où la pulvérisation a lieu est suffisamment ventilée Veiller à éviter la présence de toute s...

Page 19: ...Si le flexible a subi l un des dommages précités remplacez le immédiatement Ne jamais réparer un flexible d alimentation en peinture Le remplacer par un autre flexible mis à la terre Tout flexible raccord orientable pistolet et accessoire utilisé avec cet appareil doit pouvoir fonctionner à une pression égale ou supérieure à 3 200 lb po2 228BAR Ne jamais pulvériser lorsqu il vente Porter des vêtem...

Page 20: ...R Debe proveerse un escape y aire fresco para hacer que el aire que está dentro del área de atomización se mantenga libre de acumulaciones de vapores inflamables Evite todas las fuentes de ignición como son las chispas electrostáticas llamas abiertas flamas de piloto objetos calientes cigarros y chispas que se generan al conectar y desconectar las extensiones o de apagadores de luz que estén funci...

Page 21: ...tolas y accesorios que se usen con esta unidad deben tener una capacidad de presión de 3300 lb pulg2 228 BAR o mayor No atomice en días con viento Use ropa que evite el contacto de la pintura con la piel y el cabello Seguridad del motor de gasolina El escape del motor de esta unidad contiene productos químicos que el Estado de California reconoce que causan cáncer defectos congénitos u otros daños...

Page 22: ...crew 1 6 0509634 Port plug 1 7 0509924 Front cover 1 8 0509552 Screw 4 9 0509636 Plug nylon 2 10 0509142 Fluid section assembly 1 11 0509633 Socket screw 2 Item Part Description Quantity 12 0509543 Siphon tube 1 13 0507738 Hose clip 1 14 5006536 Inlet screen 1 15 Filter assembly 1 16 5000527 Fitting 3 8 1 17 Cart assembly 1 18 0509551 Lock nut 4 19 0507786 Lock washer 2 20 0507787 Hex screw 2 21 0...

Page 23: ...31 Grommet liquid tight 1 Item Part Description Quantity 26 0509646 Bearing 1 27 0509141 Gear housing includes items 26 30 and 31 1 28 0509614 Set screw cone point 4 29 0509613 Set screw cup point 4 30 0509647 Grease seal 1 31 0509645 Retaining ring 1 32 0509603 Thrust washer 1 2 1 33 0509606 Output gear assembly 1 34 0509599 Thrust washer 5 8 1 35 0509607 Crankshaft assembly 1 36 0509600 Thrust w...

Page 24: ...588 Piston 1 10 0509586 Outlet valve seal 1 11 0509598 Outlet cage 1 12 50164 Outlet valve ball 1 13 0509597 Outlet valve seat 1 14 0509587 O ring 1 15 0509596 Outlet valve retainer 1 16 0509590 Piston bushing 1 17 0509591 Inlet cage 1 18 0509583 Inlet valve ball 1 19 0509581 Inlet valve seal 1 20 0509592 Inlet valve seat 1 21 0509582 O ring Teflon 1 22 0509593 Inlet valve housing 1 23 0509151 Pis...

Page 25: ...85571 Plug 2 10 0295606 Lock washer 4 11 0295608 Screw 4 12 0509575 Cart includes item 9 1 13 0509624 Wheel 2 10 11 12 13 7 2 3 4 5 6 8 9 1 Filter Assembly Item Part Description Quantity 1 0294124 Filter body 1 2 14069 Filter 50 mesh 1 3 9894245 Core spring 1 4 14072 O ring Teflon 1 5 0507737 Transducer 1 6 0507739 Plug 3 8 1 7 5000527 Outlet fitting 3 8 1 8 0507738 Plug 1 4 1 9 0507793 Fitting 1 ...

Page 26: ...1 9 0507747 Spring 1 10 0507742 Valve retainer 1 11 0507735 Cam base 1 12 5006543 Groove pin 1 13 0507662 Valve handle 1 1 2 3 4 5 6 7 8 9 10 11 12 13 Electrical Schematic Labels Part Description 0509519 Logo label front 0295840 Warning label explosion 0295841 Warning label injection 0295805 Shock hazard label 0509819 No Oil label 0089799 Potentiometer 0507973 Transducer 0507737 E P C Board 050955...

Page 27: ...2235 12 Roller Cover 1 2 Nap 0152236 12 Roller Cover 3 8 Nap 0152237 12 Roller Cover 3 4 Nap 0152238 12 Roller Cover 1 1 4 Nap 0152700 Adapter Power Roller Extension 0270145 G 10 Four Finger Airless Spray Gun no tip 0093930 Anti Seize Compound 0152909 R 10 Telescoping Roller 9 3 8 Nap 0152900 R 10 Telescoping 12 Roller 3 8 Nap 0502007 G 10 Four Finger Airless Spray Gun with 517 Reversible Tip 0502...

Page 28: ...t be deemed to have failed of their essential purpose so long as SprayTECH is willing to repair or replace parts or to refund the purchase price as set forth above What Is Not Covered By This Warranty This warranty does not cover defects or damages caused by the use or installation of repair or replacement parts or accessories not manufactured by SprayTECH repair performed by anyone other than a S...

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