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. [. . . ] Attaching clamps to any other part of the assembly may result in significant damage when breaking loose the baffle jam nut and clevis. 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. Remove the left port block and rod bushing assembly. 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. Keeping the piston shaft from rotating using a 1/2 in. wrench on the piston shaft flats and using a 1 in. Remove the left port block and rod bushing assembly. Remove the rod bushings (103) from the port block (116). Using the o-ring pick, remove all rings and seals. 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. Assemble Hydraulic Piston and Insert in Cylinder 8. 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. [. . . ] 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. This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco. [. . . ]