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Instructions – Parts List
STAINLESS STEEL
Dura–Flo 600 Pumps
308350F
With Severe–Duty Rod and Cylinder
Read warnings and instructions.
See page 2 for model numbers and maximum
working pressures.
* See page 2 for models that are certified and approved.
04373
Model 686615
04498
Model 237634
Model 236464
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List of Models Displacement Pump Part No. Pump Part No. Maximum Fluid Maximum Air and Series Pump Model and Series Ratio Working Pressure Input Pressure * 237634, Bulldog 236458, 41:1 28.3 MPa, 283 bar 0.7 MPa, 7 bar Series A Series A (4100 psi) (100 psi) * 236464, Reduced Icing 236458, 41:1 28.3 MPa, 283 bar 0.7 MPa, 7 bar Series A Quiet Bulldog Series A (4100 psi) (100 psi) 686615, Senator 241177, 25:1 12 MPa, 117 bar 0.7 MPa, 7 bar Series A Series A (1700 psi) (100 psi) * This m
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Symbols Warning Symbol Caution Symbol WARNING CAUTION his symbol alerts you to the possibility of serious This symbol alerts you to the possibility of damage to injury or death if you do not follow the instructions. or destruction of equipment if you do not follow the instructions. WARNING EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury. INSTRUCTIONS This equipment is for professional use only. Read all instruction manu
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WARNING INJECTION HAZARD Spray from the gun, hose 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 might look like just a cut, but it is a serious injury. Get immediate medi- cal attention. 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 no
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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. Ground the equipment and the object being sprayed. Refer to Grounding on page 7. 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 bu
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Notes
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Installation 3. Air compressor: follow manufacturer’s recommen- General Information dations. NOTE: Reference numbers and letters in parentheses in the text refer to the callouts in the figures and the 4. Spray gun: ground through connection to a prop- parts drawing. erly grounded fluid hose and pump. NOTE: Always use Genuine Graco Parts and Acces- 5. Fluid supply container: follow your local code. sories, available from your Graco distributor. Refer to Product Data Sheet, Form No. 305724. If you
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Installation A pump runaway valve (C) senses when the System Accessories (continued) pump is running too fast and automatically shuts off the air to the motor. A pump which runs too fast can be seriously damaged. WARNING An air manifold (G) has a 3/4 npsm(f) swivel air A bleed-type master air valve (E) and a fluid drain inlet. It mounts to the pump support bracket, and valve (M) are required in your system. These provides ports for connecting lines to air-powered accessories help reduce the
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Installation TYPICAL INSTALLATION KEY A Pump J Air Line Filter R Gun Swivel B Wall Bracket K Bleed-Type Master Air Valve S Airless Spray Gun C Pump Runaway Valve (for accessories) T Suction Kit D Air Line Lubricator L Fluid Filter Y Ground Wire and Clamp E Bleed-Type Master Air Valve M Fluid Drain Valve (required) (required; see page 7 (required, for pump) N Electrically Conductive for installation instructions) F Pump Air Regulator Fluid Supply Hose W Air Line Drain Valve G Air Manifold P Fluid
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Operation/Maintenance Pressure Relief Procedure Packing Nut/Wet-Cup Before starting, fill the packing nut (8) 1/3 full with Graco Throat Seal Liquid (TSL) or compatible solvent. WARNING See Fig. 3. INJECTION HAZARD The system pressure must be manually WARNING relieved to prevent the system from starting or spraying accidentally. Fluid To reduce the risk of serious injury whenever you under high pressure can be injected through the are instructed to relieve pressure, always follow the skin and ca
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Operation/Maintenance Flush the Pump Before First Use WARNING The pump is tested with lightweight oil, which is left in INJECTION HAZARD to protect the pump parts. If the fluid you are using To reduce the risk of fluid injection, do may be contaminated by the oil, flush it out with a not use your hand or fingers to cover compatible solvent. See Flushing on page 12. the bleed hole on the underside of the bleeder valve body (112) when priming the pump. Use a crescent wrench to open and close the
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Operation/Maintenance Flush with a fluid that is compatible with the fluid you Shutdown and Care of the Pump are pumping and with the wetted parts in your system. Check with your fluid manufacturer or supplier for WARNING recommended flushing fluids and flushing frequency. Always flush the pump before fluid dries on the dis- To reduce the risk of serious injury whenever you placement rod. are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 10. WARNING For over
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Troubleshooting Chart 1. Relieve the pressure. WARNING 2. Check all possible causes and problems before To reduce the risk of serious injury whenever you disassembling the pump. are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 10. PROBLEM CAUSE SOLUTION The pump fails to oper- Valves are closed or clogged. Clear the air line; increase the air supply. ate. Check that the valves are open. The fluid hose or gun is obstructed. Clear the hose or gun*; use a hos
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Service 5. Using an adjustable wrench (or hammer and Required Tools punch), unscrew the coupling nut (106) from the Set of adjustable wrenches motor shaft (W). Do not lose or drop the coupling collars (107). See Fig. 4. Large pipe wrench 2–3/4 in. socket wrench 6. Hold the tie rod flats with a wrench to keep the Torque wrench rods from turning. Unscrew the nuts (108) from the Rubber mallet tie rods (105). Carefully remove the displacement O-ring pick pump (109) from the motor (101).
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Service V Model 237634 Shown 101 W 107 110 106 1 8 105 108 109 U Torque to 61–75 Nm (45–55 ft-lb) Torque to 195–210 Nm (145–155 ft-lb) Torque to 68–81 Nm (50–60 ft-lb) 04377 Fig. 4
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Service 2. Using a 2–3/4 in. socket or a pipe wrench, un- DISPLACEMENT PUMP SERVICE screw the intake valve (5) from the intake housing (7). Be careful to catch the intake ball (13) Disassembly as you remove the intake valve, so that it does not fall and suffer damage. Remove the seal (30) from When disassembling the pump, lay out all the removed the intake valve. Inspect the ball and the seat (D) parts in sequence, to ease reassembly. of the intake valve for wear or damage. NOTE: Packing Repair
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Service 6. Shine a light into the cylinder (2) to inspect the CAUTION inner surface for scoring or wear. Remove the two seals (11) from the cylinder. To reduce the possibility of costly damage to the rod (1) and cylinder (2), always use a plastic or 7. Place the flats of the piston seat housing (10) in a wooden block to help drive the rod out of the cylin- vise, as shown in Fig. 7. der. Never hit the rod with a hammer. 8. Using an adjustable wrench, unscrew the piston 5. Turn the cylinder (2) u
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Service 4. For standard displacement pump 236458, lubricate Reassembly the throat packings and place them in the outlet housing (6) in the following order, with the lips of 1. If it was necessary to remove the piston ball the v-packings facing down: the male gland (3*), housing (9) from the displacement rod (1), clean four leather v-packings (19*), one PTFEv-pack- the threads of the rod and the ball housing, and ing (18*), and the female gland (4*). See the apply thread sealant. Screw the ball
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Service Torque to 61–75 Nm (45–55 ft-lb). Lips face up. 1 Torque to 325–353 Nm (240–260 ft-lb). Lips face down. Torque to 258–285 Nm (190–210 ft-lb). See the Throat Packing Detail at left. 9 Lubricate. See the Piston Packing Detail at left. Apply thread sealant. Torque to 190–217 Nm (140–160 ft-lb). 8 Throat Packing Detail (Displacement Pump 236458 Shown; see page 24 for options.) 6 8 (Ref) *4 T *18 *19 *3 6 (Ref) *11 2 Piston Packing Detail (Displacement Pum
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Service 9. Install the seal (30*) on the intake valve (5). Lubri- 11. Install the seal (11*) on the bottom of the cate the seal and the threads of the intake valve. cylinder (2). See Fig. 8. Lubricate the seal and the threads of the cylinder. Screw the intake 10. One end of the intake housing (7) has a rounded housing (7) onto the cylinder handtight. The ball cavity (S) on the inside (see Fig. 9). Install the threads will engage easily until the seal contacts ball (13*) in this cavity, then sc
