User manual GRACO PROPORTIONING PUMPS REPAIR PARTS

[. . . ] Repair - Parts Proportioning Pumps Not for use in explosive atmospheres. Important Safety Instructions Read all warnings and instructions in this manual and all supplied manuals. Save all instructions. 312068K ENG Proportioning pumps and hydraulic cylinders used on Hydraulic Proportioners. For professional use only. Model 247576: 2000 psi (13. 8 MPa, 138 bar) Maximum Working Pressure All other models: 3500 psi (24. 0 MPa, 240 bar) Maximum Working Pressure See page 2 for model information. TI9778c Models Contents Models . 22 Models Proportioning Pumps Part, Series 247371, A 247372, A 247373, A 247374, A 247375, A 247577, A 247376, A 247377, A 247576, A Cylinder Size #30 #40 #48 #60 #80 #88 #96 #120 #140 Hydraulic Cylinders Part, Series 247624 255723 295027 Cylinder Size #80 #80 #80 Pumplines Part, Series 288638 288639 P7758-255773 Cylinder Size #80 #80 #80 2 312068K Repair Repair Flushing Pressure Relief Procedure Flush equipment only in a well-ventilated area. [. . . ] Clamp the hydraulic cylinder to a flat surface using c-clamps or another strong clamping device, ensuring that the cylindrical spacer (114) is to the right. open-end wrenches, loosen and remove four hexagonal spacers (113) to create room to rotate the clevises. Loosen and remove the remaining hex spacers (113) and smooth spacer (114), keeping the tie rods in place. Slide the piston and everything attached to it out the right side of the cylinder by holding the assembly by the cylinder and pushing the left end of the piston shaft against a flat surface. Using a c-clamp, secure the port block (116) of the remaining assembly. Using your hands, push the wide end of the rod bushing into port block (116). On the side opposite the rod bushing, place o-ring (105) around the extruding circle. Place port block (116) on a flat surface with the large opening facing up. TI11275a 105 1 116 TI11276a 1 Apply lithium 10 312068K Repair 7. Repeat the steps above to assemble the second rod bushing/port block assembly. Place wear ring (108) in the center channel of hydraulic piston (104). With the lip facing away from the center channel, place one u-cup seal (106) in each of the remaining two channels of the hydraulic piston. Place one back-up ring (107) in the same channel as each of the u-cup seals on the side facing the center channel. Assembling Items onto Piston Shaft 12. With the rod bushing (103) facing away from the cylinder (102), slide the port block and rod bushing assembly over the rod tool and onto the shaft. Repeat with the other port block on the opposite end of the hydraulic piston shaft. If necessary, rest the cylinder on a vise or similar surface while pushing the piston into it. Insert one tie rod into each of the four holes in the port blocks and retainer plates. Keep an equal amount of threads showing through the retainer plate on each side. Rotate the assembly so that the port holes are now facing in towards your body and place the assembly on a flat surface. TI11277a Attaching Retainer Plates and First Four Spacers 14. Place the assembly on a flat surface with the port hole on the two port blocks facing the same direction. 102 1 TI11279a 1 Apply lithium grease to the inside of each end of the cylinder. 1 1 TI11281a Make sure the port holes are facing in towards your 312068K 11 Repair 18. Using the far, top tie-rod, attach cylindrical spacer (114) to the right side of the assembly. 24. With the lip of the adapter facing left, slide the adapter onto the left end of the hydraulic piston shaft. With the hex-side of the baffle jam nut facing away from the hex-head of the clevis, spin the baffle jam nut (122) onto the hex clevis (117). [. . . ] 121 122 123 124 125 126 127 128 129 130 Part Description 177156 O-RING 295852 NUT, jam, baffle SOLVENT, catalyst, liquid SEALANT, anaerobic 298040 MANIFOLD, hydraulic (used only on Model 247624) 113467 SCREW, cap, socket head (used only on Model 247624) 295225 PLUG, pipe, flush (used only on Model 247624) 112793 O-RING (used only on Model 247624) OP307-2 PIN, link -1000 (used only on Model P7758-255773) 296653 PIN, clevis; not shown (used only on Model 255723) Qty. 1 1 1 1 1 4 2 2 1 2 Parts are also included in Hydraulic Cylinder Repair Kit 296785 which can be purchased separately. 312068K 19 Parts 20 312068K Technical Data Technical Data Category Maximum working pressure Maximum fluid temperature Viscosity range Maximum material inlet pressure Wetted parts Data Model 247576: 2000 psi (13. 8 MPa, 138 bar) All other models: 3500 psi (24. 0 MPa, 240 bar) 190°F (88°C) 250-1500 centipoise 400 psi (2. 7 MPa, 27 bar) Carbon Steel, Stainless Steel, Chrome, PTFE, Acetal, UHMWPE 312068K 21 Graco Standard Warranty Graco warrants all equipment referenced in this document 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. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco's written recommendations. [. . . ]