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Repair
™
GH 130, GH 200,
GH 230, GH 300
Hydraulic Sprayers
311797B
- Use with Architectural Coatings and Paints -
3300 psi (2.8 MPa, 228 bar) Maximum Working Pressure
List of models provided on page 2.
Important Safety Instructions.
Read all warnings and instructions in this manual. Save these instructions. Contact
Graco Customer Service, your local Graco distributor or our website: www.graco.com,
to obtain a manual in your language.
ti5380a
English
Graco Inc. P.O. Box 1441 Minneapolis, MN
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Models Models GH130 GH200 GH230 GH300 ETL/CSA/UL 120 Vac 120 Vac 60 Hz 60 Hz 253709 ✔ 253957✔✔ 253959✔✔ 253980✔✔ 253960 ✔ 253962✔✔ 253963✔✔ 253981✔✔ 255095✔✔ 253964 ✔ 253965 ✔✔ 253966 ✔✔ 253982 ✔✔ 253967 ✔ 253968 ✔✔ Electric Motor Kit Options Kit Number Sprayer Model Description GH130 120VAC, 60Hz, 20A, CAS/UL approved 288474 GH130 120VAC, 60Hz, 15A 288473 GH200/GH230 120VAC, 60Hz, 20A, CSA/UL approved 248950 GH200/GH230 120 VAC, 60Hz, 15A 248949 EH200/HD1200 240VAC, 50Hz, 13.4A 248946 2 311797
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Models Warnings The following Warnings are for the setup, use, grounding, maintenance and repair of this equipment. The exclama- tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. Refer back to these Warnings. Additional, product-specific warnings may be found throughout the body of this manual where applicable. WARNING FIRE AND EXPLOSION HAZARD Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To hel
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Models WARNING MOVING PARTS HAZARD Moving parts can pinch or amputate fingers and other body parts. � Keep clear of moving parts. � Do not operate equipment with protective guards or covers removed. � Pressurized equipment can start without warning. Before checking, moving, or servicing equipment, follow the Pressure Relief Procedure in this manual. Disconnect power or air supply. EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. � Do not exceed the maximum working pressure or
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ON Component Identification Component Identification 2. 3. 4. 1. off on bar/MPa PSI ti9167a 12. 11. ti8714a ti9126a 5. 10. 6. ti9166a 13. ti8691a 9. 8. 7. ti5381b ti8844a Item No. Component 1 Hydraulic pump valve 2 Pressure control 3 Hydraulic Oil Cap 4Drain valve 5 Engine ON/OFF switch 6 Engine controls 7 Electric motor On/Off Switch 8 Gun trigger Lock 9 Displacement pump ™ 10 ProConnect 11 Inlet strainer (standard) 12 Inlet strainer (option) 13 Serial number tag 311797B 5 OFF
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General Repair Information General Repair Information SAE O-Ring Installation 1. Unscrew lock nut to touch fitting. To reduce risk of serious injury, do not touch moving parts with fingers or tools while testing repair. Shut 2. Lubricate o-ring (A). off sprayer when repairing. Install all covers, gaskets, screws and washers before operating sprayer 1. Keep all screws, nuts, washers, gaskets, and electrical 3. Screw in fitting hand tight. fittings removed during repair procedures. These part
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Maintenance Maintenance DAILY: Check and fill the gas tank. DAILY: Check that displacement pump is tight. DAILY: Check level of Throat Seal Liquid (TSL) in dis- Pressure Relief Procedure placement pump packing nut. Fill nut, if necessary. Keep TSL in nut to help prevent fluid buildup on piston rod and The system pressure must be manually relieved to pre- premature wear of packings and pump corrosion. vent the system from starting or spraying accidentally. Fluid under high pressure can be inje
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Troubleshooting Troubleshooting PROBLEM CAUSE SOLUTION Gas engine pulls hard (won't start) Hydraulic pressure is too high Turn hydraulic pressure knob counter clock- wise to lowest setting. Gas engine does not start Switch OFF, low oil, no gasoline Consult engine manual, supplied. Gas engine doesn't work properly Faulty engine Consult engine manual, supplied. Elevation Refer to Engine Repair Kit. 4.0 hp - 288678 / 5.5 hp - 248943 / 6/5 hp - 248944 / 9.0 hp - 248945 Gas engine operates, but di
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Notes Notes 311797B 9
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Hydraulic Pump Hydraulic Pump (Figure 2) Removal Installation 1. Install hydraulic pump (220) to reservoir cover (209) with four screws (277); torque 90-110 in-lb (10.1-12.4 N·m). 2. Install gasket (203) and reservoir cover (209) with eight screws (212); torque 110+/-5 in-lb (12.4 +/- 0.5 N·m). 3. Install elbow (226) in hydraulic pump (220). Install elbow (226) in tube (276). Torque to 25 ft-lb (33.9 N·m). Let hydraulic system cool before beginning service. 4. Install elbow (221); torque to
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Hydraulic Pump 227 222 266 221 225 226 220 96 44 173 211 117 276 209 172 277 212 207 206 111 176 114 203 ti8821b 2 FIG. 2 311797B 11
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Fan Belt Fan Belt (Figure 3) Removal Installation 1. Thread belt (44) around drive pulley (43) and fan pulley (96). 2. Let engine (119) down to put tension on belt. 3. Rotate belt guard (117) down. 4. Tighten belt guard knob (55). 1. Relieve pressure, page 7. 2. Loosen belt guard knob (55). 3. Rotate belt guard (117) up. 4. Lift engine (119) up to remove tension on belt (44). 5. Remove belt from pulley (43) and fan pulley (96). 117 44 ti8815a 119 43 96 ti8814a ti8816a 55 FIG. 3 12 311797B
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Engine Engine (Figure 4) Removal Installation NOTE: All service to the engine must be performed by 1. Install rocker plate (99), dampeners (153) and washers (154) on engine (119) with four screws (23), washers (7) an authorized HONDA dealer. and nuts (24); torque to 125 in-lb (14.1 N·m). 2. Install engine and rocker plate (99) on sprayer. 3. Swing motor retainer bracket (204) in. Tighten motor nut (205). 4. Install Fan Belt, page 10. 1. Relieve pressure, page 7. 2. Remove Fan Belt, page 10.
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Hydraulic Motor Rebuild Hydraulic Motor Rebuild (Figure 5) 9. Cover spring retainer (261) with a rag to contain detent Removal spring (258) and balls (259) when they are removed from yoke. Remove detent balls and spring. Remove spring retainer. 10.Put yoke in vise and remove piston rod assembly from yoke. 1. Relieve pressure, page 7. 2. Place drip pan or rags under sprayer to catch hydraulic oil Installation that leaks out during repair. 3. GH130 Models: - Follow Steps 2-5 of pump removal
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266 265 test hole 288 271 ti8817A 261 258 260 257 259 264 ti8819a 263 ti8818a FIG. 5 311797B 15
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Hydraulic Oil/Filter Change Hydraulic Oil/Filter Change (Figure 6) Removal 1. Relieve pressure, page 7. 2. Place drip pan or rags under sprayer to catch hydraulic oil that drains out. 3. Remove drain plug (2). page 26. Allow hydraulic oil to drain. 4. Unscrew filter (227) slowly - oil runs into groove and drains out rear. Installation 1. Install drain plug (2) and oil filter (227). Tighten oil filter 3/4 turn after gasket contacts base. 2. Fill with five quarts of Graco hydraulic oil 169236
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Displacement Pump Displacement Pump GH130 Only (Figures 7-12) See manual 311845 for pump repair instructions Installation Removal 1. Flush pump. 2. Relieve pressure, page 7. If pin (92) works loose, parts could break off and project through the air, resulting in serious injury or property dam- age. Make sure pin is properly installed. 3. (Fig. 7) Remove suction tube (114) and paint hose (63) CAUTION (remove at swivel end). If the pump jam nut (86) loosens during operation, the threads of the
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Displacement Pump ProConnect Displacement Pump ProConnect GH200/230/300 Only (Figures 13-27) 5. (Fig. 15) Slide coupler cover (193) up to fully expose rod See pump manual 311845 for pump repair. couplers (179). Removal 247 193 1. Flush pump. 179 2. Relieve pressure, page 7. 3. (Fig. 13) Remove suction hose (114). ti8829a FIG. 15 6. (Fig. 16) Remove rod couplers (179). 179 ti8827a FIG. 13 179 4. (Fig. 14) Remove paint hose fitting (190) and paint hose (63) from pump fitting. ti8830a 190 FIG.
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Displacement Pump ProConnect Installation CAUTION 1. (Fig. 20) If needed, place pump rod in adjustment casting Support pump with your hand before opening t-handle. and pull pump to lengthen rod. 8. (Fig. 18) Open clamp (247). ti8834a FIG. 20 2. (Fig. 21) Install pump (111) in sprayer. ti8833a FIG. 18 9. (Fig. 19) Remove pump (111) from unit. 111 111 ti8959a FIG. 21 ti8832a 3. (Fig. 22) Close clamp (247) around pump (111) and push it FIG. 19 closed. 247 Adjustment hole ti8958a FIG. 22 NOTE: Clo
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Displacement Pump ProConnect 4. (Fig. 23) Install pin. 6. (Fig. 25) Slide couple cover (193) down over rod couplers (179). 193 179 ti8957a FIG. 23 ti8955a 5. (Fig. 24) Slide coupler cover (193) up to expose pump rod. FIG. 25 Install rod couplers (179) over rod. 7. (Fig. 26) Open clamp and align pump outlet with hose fitting (190). Install paint hose fitting (190) and paint hose (63) to pump connection, close clamp. 190 193 179 179 ti8956a 63 FIG. 24 ti8954a FIG. 26 8. (Fig. 27) Install suct
