Nordson cp Product Manual
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Contents
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Repair 6-11Part 104373ā03 2015 Nordson CorporationAir Motor RebuildAir Motor Disassembly1. Disconnect the air hose and siphon and high pressure fluid hoses fromthe hydraulic section.2. Disconnect the ground strap from the upper pump head.3. Drain the solvent chamber fluid.CAUTION: The CP pump weighs 48 kg (105 lb). Get help when lifting thepump off its mounting.4. Remove the pump from the wall or stand. If desired, the hydraulicsection, air preparation system, and air control components may beremoved first. Place the pump on a clean workbench.5. Remove the air preparation system.a. Disconnect the air tubing from the roller valves and the air valve.b. Remove the four mounting bolts and the system from the pump.6. Remove both muffler covers and slide the exhaust tubes out.7. Remove the muffler boxes.NOTE: The air valve does not have to be removed to service the air motor.8. Disconnect the plunger from the piston shaft and remove the hydraulicsection as an assembly from the air motor.9. Disconnect the air tubing from the accumulator. Remove theaccumulator from the cover.10. Block the air motor in a vertical position.WARNING: The pistons are spring loaded. To prevent personal injury,remove the upper head carefully.11. See Figure 6-10. To remove the upper head (8):a. Remove six of the hex head screws, lock washers, and flatwashers (9). Leave in two screws, one at each end, diagonallyopposed to each other.b. While another person pushes down on the head to keep the springscompressed, remove the remaining two screws.c. Slowly release the pressure on the upper head. Remove the upperhead.NOTE: The general finishing version contains 2 springs per cylinder.12. Remove the piston/shaft assemblies (4), springs (2), and cylinders (3).13. Remove the square O-rings (1) from the upper head.14. Remove the U-cup (7) and back-up ring (6) from the piston. |
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