Instructions -- Parts List GH 733 Hydra--Sprayr Sprayer 307616ZAB EN 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, RACr X, DripLesst Tip Guard and SwitchTipt *Severe-duty displacement pumps have an abrasion and corrosion-resistant displacement rod and sleeve. Refer to the Technical Data in manual 311762.
Table of Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Component Identification . . . . . . . . . . . . . . . . . . . . . . . . 5 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. D Fluid injected into the skin may look like just a cut, but it is a serious injury. Get immediate surgical treatment. D Do not point the gun at anyone or at any part of the body. D Do not put your hand or fingers over the spray tip.
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. D If there is any static sparking or you feel an electric shock while using this equipment, stop spraying immediately. Do not use the equipment until you identify and correct the problem. D Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being sprayed.
Component Identification HYDRAULIC RETURN LINE TO MOTOR HYDRAULIC SUPPLY LINE TO MOTOR MOTOR RESET BUTTON HYDRAULIC MOTOR HYDRAULIC RESERVOIR GASOLINE FILL CAP SUCTION TUBE OUTLET FITTING PRESSURE HYDRAULIC PUMP DRAIN VALVE DISPLACEMENT PUMP SUCTION HOSE 9089d PRESSURE CONTROL KNOB Fig 1 Setup 1. Connect the Hose and Gun a. Remove the plastic cap plug from the outlet tee and screw an accessory, conductive or grounded spray hose onto the 1/4 npsm(f) outlet fitting. See Fig 1. b.
Setup 3. Check the Hydraulic Oil Level 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. GASOLINE FILL CAP 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 hydraulic components. b. Add oil as needed to the proper level.
Setup 5. Fill the Fuel Tank 6. Grounding WARNING WARNING FIRE AND EXPLOSION HAZARD Fuel spilled on a hot surface can cause a fire or explosion and serious bodily injury and property damage. Shut off engine and let it cool before filling the tank. Carefully follow steps 5.a. to 5.c., below, being sure not to spill any fuel. a. Close the fuel shutoff valve. See Fig 3.
Flushing When to Flush 1. New sprayer. Your new sprayer was factory tested with lightweight oil which was left in to protect pump parts from corrosion. Before using oil- base paint, flush with mineral spirits only. Before using water- base paint, flush with mineral spirits, followed by soapy water, then a clean water rinse. 2. Changing colors. Flush with a compatible solvent such as mineral spirits. 3. Changing from water--base to oil--base paint. Flush with soapy water, then mineral spirits.
Flushing WARNING FIRE AND EXPLOSION HAZARD To reduce the risk of static sparking and splashing when flushing, always remove the spray tip from the gun and hold a metal part of the gun firmly to the side of a grounded metal pail. 11. Making firm metal-to-metal contact, hold the gun firmly to the side of the grounded solvent pail. Trigger the gun. At the same time, slowly turn the pressure control knob clockwise just enough to start the pump. 12. Circulate the solvent until the system is thoroughly flushed.
Operation Pressure Relief Procedure WARNING SKIN INJECTION HAZARD The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. Fluid under high pressure can be injected through the skin and cause serious injury.
Operation If the motor stalls during operation, turn OFF the ignition key. With your hand, firmly press straight down on the motor reset button. Now try to restart the sprayer. If it will not start, refer to the separate motor manual, 307158. CAUTION Never use a hammer to depress the reset button, as it could cause serious internal motor damage. CAUTION The engine throttle has been set to a maximum of 3000 RPM.
Maintenance 1. Always stop the pump at the bottom of its stroke when you take a break and at the end of the day. This helps keep fluid from drying on the rod and damaging the packings. 2. Keep the displacement pump packing nut/wet cup 1/3 full of TSL at all times. The TSL helps protect the packings and rod. 3. Check the tightness of the packing nut daily. It should be tight enough to stop leakage but no tighter.
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 displacement pump doesn’t operate. Hydraulic motor stalled.
Replacing the Hydraulic Pump 1. Follow the Pressure Relief Procedure Warning on page 10. Let the hydraulic system cool before beginning the service procedure. 2. Unscrew the reservoir drain plug (51), having a container ready to catch the draining fluid. 3. Disconnect the hose (7) from the bypass valve (9) by loosening the hose clamp (8). See Fig 8. 4. Loosen the hose clamp (8) and pull the hose (85) off the hose insert (5) near the elbow (3). See Fig 8. 9. Pull the pump straight off the pump support. 10.
c. Replacing the Cooler and Blower 1. Follow the Pressure Relief Procedure Warning on page 10. Let the hydraulic system cool before beginning the service procedure. Pull the pump support and blower off far enough for the blower to fall out of the bottom of the housing. 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).
Displacement Pump Service Disconnect the Displacement Pump 1. Flush the pump if possible. Stop the pump on the down stroke. 2. Follow the Pressure Relief Procedure Warning on page 10. 3. Remove the suction tube and fluid hose from the displacement pump. 4. Unscrew the three tie rod locknuts (48). See GH733 Sprayer Parts Drawing. 5. Unscrew the shouldered nut (35). Pull the displacement pump (46) off the tie rods (47). 6. Screw the jam nut (90) up onto the connecting rod (91). 7.
Complete Sprayer Parts Drawing Model 230975, GH 733 Sprayer Includes items 501 to 510 REF NO. PART NO. 501 231733 505 277251 506 156849 DESCRIPTION QTY GH 733 SPRAYER (See parts list on page 19) .HOSE, fluid, nylon, 3/8 in. ID, 3/8 npsm(fbe); 50 ft (15m) long .NIPPLE, 3/8 ntp(m) 505 1 3 3 507 508 509 155665 164672 277249 510 246240 511 100505 .ADAPTER, 3/8 npt(m) x 3/8 npsm swivel .ADAPTER, 1/4 npsm x 3/8 npt(m) .HOSE, fluid, nylon, 1/4 in. ID, 1/4--18 npsm(fbe), 3 ft (0.9 m) long .
GH733 Sprayer Parts Drawing Model 231733, Series D 82 30 79 29 76 77 E 31 22 34 33 A 91 49 47 178 32 177 36 35 89 103 143 48 37 46 38 31 39 See page 17 for 150 144 continuation 43 9086B 18 307616
GH733 Sprayer Parts Drawing 307616 19
GH733 Sprayer Parts Drawing 74 28 97 2 153 96 152 Ref 111 95 Ref 77 98 50 78 51 93 94 5 54 4 8 7 5 8 53 141 112 85 117 8 5 3 113 108 54 25 52 105 7879b 138 106 24 114 110 8 142 66 49 110 64 65 137 9 10 107 15 109 23 115 109 108 17 16 18 Ref 22 20 307616 7879A
GH733 Parts List REF NO. 1 2 3 4 5 7 8 9 10 11 12 13 14 15 15 16 17 18 19 20 21 22 PART NO.
Notes 22 307616
Technical Data Engine . . . . . . . . . . . . . . . KOHLER Model CH18 OHV 4 cycle twin cylinder, air cooled, 18 HP, (13.4 kW) Gasoline . . . . . . . . . . . . . . . . . . . 6.0 gallon (22.7 liter capacity) consumes 1.3 gal/hr (4.9 liter/hr) Hydraulic Fluid Sump . . . . . . . . . . . . . . . . . . 5 gallon (19 liters) Hydraulic Pressure . . . . . . . . . . . . . . . . . . . . 1300 psi (89 bar) 10.2 gpm (39 l/min) Displacement Pump . . . . . . . . . .
Graco Warranty Graco warrants all equipment listed in this manual which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special extended or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.
