0112025A1234Repair7-2 1998 Nordson CorporationAll rights reserved106 588DIssued 8/98Manual 1-12If necessary, use this procedure to remove the pump from its mount:1. See Figure 7-1. Disconnect the hose from the air intake fitting (1).2. Disconnect the hose from the fluid output port (2).3. Disconnect the hose from the siphon port (3).4. Place a container under the solvent chamber plug (4).5. Drain the solvent from the pump by removing the solvent chamberplug. Replace the solvent chamber plug after draining the solvent.6. Remove the mounting hardware securing the pump to its mount.Move the pump to a clean work area.Fig. 7-1 Removing Pump from WallMount (Typical)1. Air intake fitting2. Fluid output port3. Siphon port4. Solvent chamber plugThe following paragraphs provide repair procedures for the air valve.WARNING: The air valve snapper spring is under tension. Toprevent injury to personnel, use extreme care when removingthe air valve parts.1. See Figure 7-2. Remove the screws (1) securing the mufflercovers (2) to the muffler boxes (5).2. Remove the muffler box screws (3) and muffler box lock washers (4)securing the muffler box to the air valve (9).3. Remove the screws (12 and 15) securing the top cover plate (6) tothe front cover plate (14).2. How to Remove thePump from its Mount3. Air ValveRemoval