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Instructions – Parts List
GH 733 Hydra–Spray
Sprayer
307616Z1
3500 psi (240 bar, 24 MPa) Maximum Working Pressure
Model 231733, Series E
Sprayer only. Has Severe-Duty* Displacement Pump
Model 230975
Includes Sprayer 231733, Hose, Swivel, Gun,
RAC X, DripLess Tip Guard and SwitchTip
*Severe-duty displacement pumps have an abrasion and corrosion-resistant displacement rod and
sleeve. Refer to the Technical Data in manual 311762.
Important Safety Instructions
Read all warnings and instructions
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Table of Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Complete Sprayer Parts Drawing . . . . . . . . . . . . . . . . 17 Component Identification . . . . . . . . . . . . . . . . . . . . . . . . 5 GH733 Sprayer Parts Drawing . . . . . . . . . . . . . . . . . . 18 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 GH733 Sprayer Parts List . . . . . . . . . . . . . . . . . . . . . . 21 Flushing . . . . . . . .
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WARNING SKIN INJECTION HAZARD Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also cause serious injury. Fluid injected into the skin may look like just a cut, but it is a serious injury. Get immediate surgi- cal treatment. Do not point the gun at anyone or at any part of the body. Do not put your hand or fingers over the spray tip. Do not
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WARNING FIRE AND EXPLOSION HAZARD Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result in a fire or explosion and serious injury. If there is any static sparking or you feel an electric shock while using this equipment, stop spray- ing immediately. Do not use the equipment until you identify and correct the problem. Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being sprayed. Keep the spray
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Component Identification HYDRAULIC RETURN LINE TO MOTOR HYDRAULIC SUPPLY LINE TO MOTOR MOTOR RESET BUTTON HYDRAULIC MOTOR HYDRAULIC RESERVOIR GASOLINE SUCTION TUBE FILL CAP OUTLET FITTING PRESSURE HYDRAULIC DRAIN VALVE PUMP DISPLACEMENT PUMP 9089d PRESSURE SUCTION HOSE CONTROL KNOB Fig 1 Setup 1. Connect the Hose and Gun c. Don’t use thread sealant on the swiveling nut of the hose couplings, and don’t install the a. Remove the plastic cap plug from the outlet spray tip yet. tee and screw an ac
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Setup 3. Check the Hydraulic Oil Level GASOLINE FILL CAP a. Unscrew the hydraulic oil fill cap. See Fig 2. The dipstick is attached to the cap. The oil should be up to the full line on the dipstick. OIL DIPSTICK CAUTION To prevent damage to the cooling system and hydraulic pump, use only Graco Hydraulic Oil, 169236 (5 gal./20 liter) or 207428 (1 gal/3.8 liter). Other types of hydraulic oil may damage the hydrau- lic components. b. Add oil as needed to the proper level. A completely full hydrauli
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Setup 5. Fill the Fuel Tank 6. Grounding WARNING WARNING FIRE AND EXPLOSION HAZARD FIRE AND EXPLOSION HAZARD To reduce the risk of static sparking, fire Fuel spilled on a hot surface can cause or explosion which can result in serious a fire or explosion and serious bodily bodily injury and property damage, injury and property damage. Shut off ground the sprayer, all system components, and engine and let it cool before filling the the object being sprayed as instructed under FIRE tank. Carefully
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Flushing When to Flush 4. Changing from oil–base to water–base paint. Flush with mineral spirits, followed by soapy water, 1. New sprayer. Your new sprayer was factory tested then a clean water flush. with lightweight oil which was left in to protect 5. Storage. pump parts from corrosion. Water–base paint: flush with water, then mineral Before using oil–base paint, flush with mineral spirits and leave the pump, hose and gun filled spirits only. with mineral spirits. Follow the Pressure Relief Be
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Flushing 12. Circulate the solvent until the system is thoroughly flushed. WARNING 13. Release the trigger and engage the gun safety FIRE AND EXPLOSION HAZARD latch. To reduce the risk of static sparking and splashing when flushing, always remove 14. If you are going to start spraying, place the the spray tip from the gun and hold a pump or suction tube into the supply container. metal part of the gun firmly to the side of a Follow the Pressure Relief Procedure on page 10. Engage the gun safety
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Operation Pressure Relief Procedure 2. Starting the Sprayer a. Open the bypass valve to make startup easier. WARNING In the open position, the valve lever is parallel to the body of the valve. See Fig 6. Close the SKIN INJECTION HAZARD filter drain valve. The system pressure must be manually b. Turn the pressure control knob counterclock- relieved to prevent the system from wise until all spring tension is relieved. You will starting or spraying accidentally. Fluid be able to feel it. The spraye
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Operation If the motor stalls during operation, turn OFF the igni- tion key. With your hand, firmly press straight down on CAUTION the motor reset button. Now try to restart the sprayer. If The engine throttle has been set to a maximum of it will not start, refer to the separate motor manual, 307158. 3000 RPM. The sprayer warranty will be voided and the hydraulic pump life shortened if this adjustment is changed. CAUTION Never use a hammer to depress the reset button, as 6. Cleaning a Clogged Ti
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Maintenance 1. Always stop the pump at the bottom of its 9. To change the hydraulic oil: stroke when you take a break and at the end of a. Follow the Pressure Relief Procedure the day. This helps keep fluid from drying on the Warning on page 10. rod and damaging the packings. 2. Keep the displacement pump packing nut/wet b. Place a waste container under the drain plug cup 1/3 full of TSL at all times. The TSL helps of the hydraulic reservoir. See Fig 7. Unscrew protect the packings and rod. the
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Troubleshooting WARNING SKIN INJECTION HAZARD To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief Procedure on page 10. Check everything in the troubleshooting chart before disassembling the sprayer. PROBLEM CAUSE SOLUTION Gas engine doesn’t work properly. Consult engine manual, supplied. Gas engine will not start. Check battery. Gas engine operates, but Hydraulic motor stalled. Turn the ignition key to OFF. Firmly press displacement
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Replacing the Hydraulic Pump 8. Pull the pump straight off the pump support. 1. Follow the Pressure Relief Procedure Warning 9. Loosen the setscrews (108) on the pump half of on page 10. Let the hydraulic system cool before the coupler (109). See Fig 9. beginning the service procedure. 10. Remove all fittings from the old pump and install 2. Unscrew the reservoir drain plug (51), having a them on the new pump in the same order. container ready to catch the draining fluid. 11. Check Dimension A a
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Replacing the Cooler and Blower c. Pull the pump support and blower off far enough for the blower to fall out of the bottom 1. Follow the Pressure Relief Procedure Warning of the housing. on page 10. Let the hydraulic system cool before beginning the service procedure. d. Install a new blower. Secure the pump support (117) to the engine. See Fig 8. 2. Remove the hydraulic pump as instructed in the previous section. e. Check Dimension A as shown in Fig 9 and tighten the coupler setscrews (108). B
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Displacement Pump Service Disconnect the Displacement Pump Reconnecting the Displacement Pump 1. Flush the pump if possible. Stop the pump on the 1. Screw the connecting rod (91) into the displace- down stroke. ment rod (A) and replace the lower cotter pin (89). Screw the jam nut (90) all the way down. See 2. Follow the Pressure Relief Procedure Warning GH733 Sprayer Parts Drawing. on page 10. 2. Mount the displacement pump (46) onto the tie 3. Remove the suction tube and fluid hose from the rod
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Complete Sprayer Parts Drawing 506 156849 .NIPPLE, 3/8 ntp(m) 3 Model 230975, GH 733 Sprayer 507 155665 .ADAPTER, 3/8 npt(m) x 3/8 npsm swivel 1 Includes items 501 to 510 508 164672 .ADAPTER, 1/4 npsm x 3/8 npt(m) 1 REF 509 H52503 .HOSE, fluid, nylon, 1/4 in. ID, 1 NO. PART NO. DESCRIPTION QTY 1/4–18 npsm(fbe), 3 ft (0.9 m) long 501 231733 GH 733 SPRAYER 1 510 246240 .AIRLESS SPRAY GUN 1 (See parts list on page 19) see manual 309740 for parts 504 218659 HOSE & GUN KIT, 1 511 100505 BUSHING, pip
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GH733 Sprayer Parts Drawing Model 231733, Series D 82 30 79 29 76 77 E 31 22 34 33 A 91 49 47 178 36 32 35 177 103 89 143 48 37 46 38 31 39 150 See page 17 for 144 continuation 43 9086B 18 307616
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GH733 Sprayer Parts Drawing 187 182 183 88 124 LABEL LABEL 83 1 184 72 68 LABEL LABEL 71 87 172 181 LABEL 173 170 171 73 LABEL 72 LABEL 75 64 LABEL 28 27 31 31 26 66 60 67 58 188 63 41 Ref 58 To Starter 61 To Engine Switch 14 122 13 119 185 121 186 56 12 118 21 55 74 57 28 123 20 64 28 19 7877c 74 120 40 145 59 11 119 307616 19
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GH733 Sprayer Parts Drawing 74 28 2 153 96 152 97 Ref 111 98 95 5 Ref 77 54 50 78 4 8 51 7 93 5 94 8 53 141 112 113 85 117 8 5 108 3 54 25 105 52 7879b 138 106 24 114 110 8 108 142 109 115 23 109 66 49 110 9 64 10 65 107 137 15 17 16 18 7879A Ref 22 20 307616
