Graco 312068M User Manual

312068MENRepair - PartsProportioning PumpsProportioning pumps and hydraulic cylinders used on Hydraulic Proportioners. For professional use only. For

Repair 10 312068M17. Remove the right port block and rod bushing assembly.18. Remove the rod bushings (103) from the port blocks (116).19. Using the o

Repair312068M 117. Repeat the steps above to assemble the second rod bushing/port block assembly.Assemble Hydraulic Piston and Insert in Cylinder 8. P

Repair 12 312068M18. Using the far, top tie-rod, attach cylindrical spacer (114) to the right side of the assembly. 19. Attach one hexagonal spacer (1

Repair312068M 1333. Hold the right clevis stationary with a 1 in. open-end wrench and, by turning the baffle jam nut with a 1 in. torque-wrench, torqu

Repair 14 312068M36. Hold the left clevis stationary with a 1 in. open-end wrench to keep the cross-holes horizontal and torque the baffle jam nut aga

Parts312068M 15PartsPumpline203207204205206204202203219201219ti13870a208202Ref DescriptionPumpline Assembly288638 288639 P7758-255773 Qty201 CYLINDER,

Parts 16 312068MPiston and Cylinder SealsItem 25 Torque SpecificationPump Size Torque30 130 in-lb (14.7 N•m)28, 40, 48, 60 22 ft-lb (29.7 N•m)80, 88,

Parts312068M 17 Refer to Table 1 for part number. Refer to Table 2 for part number. Refer to Table 3 for part number. Parts included in Kit 261859

Parts 18 312068MHydraulic Cylinder 101111103112110109121120122113116115106107104107105106108105109110112103111116101113114118119117102Apply high stren

Parts312068M 19 Parts are also included in Hydraulic Cylinder Repair Kit 296785 which can be purchased separately. Ref. Part Description Qty.101 2950

Models 2 312068MContentsModels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Proportioning Pumps . . . . . . . . . . . .

Parts 20 312068M

Technical Data312068M 21Technical DataCategory DataMaximum working pressureModel 247576: 2000 psi (13.8 MPa, 138 bar)All other models: 3500 psi (24.0

All written and visual data contained in this document reflects the latest product information available at the time of publication. Graco reserves th

Repair312068M 3RepairFlushing• Flush out old fluid with new fluid, or flush out old fluid with a compatible solvent before introducing new fluid.• Use

Repair 4 312068MPumpline Disassembly 1. Remove plug fitting (206) from lube cylinder (205).2. Insert clevis pin removal tool 296607 through open-ing i

Repair312068M 56. Attach the clevis pin (219) to the clevis pin tool. Insert clevis pin through hole in lube cylinder and into the left clevis.7. Gent

Repair 6 312068MPump Base DisassemblyDisassemble and clean pump base annually. For pumpline P7758-255773, disassemble and clean the pump base on every

Repair312068M 7Piston and Cylinder SealsDisassembly1. Relieve pressure, page 3.2. Turn OFF the main disconnect and lock out power at the source.3. Dis

Repair 8 312068M3. Using supplied bolts in the cylinder seal kits, press seal (16) into outlet flange (26). Ensure seal faces cylinder. Assemble bushi

Repair312068M 9Hydraulic Cylinder DisassemblyTools Required• Two - 1 in. open-end wrench• Two - 1/2 in. open-end wrench• O-ring pick1. Relieve pressu