MVP HVDG-2000, Operation Manual

Page: 23 / 61

High Volume 1:1 Pro Gun Operations Manual
Page | 23
Note Make sure the valve rod is correctly aligned. Rotate the valve rod so that the
large actuating stem hole (relief side) is pointing down and the slot on the end
of the valve rod is on the right side of the gun block when looking at the back of
the gun.
Reinstall Actuating Stem
13. Screw the actuating stem into the valve rod through the center spacer.
Note Make sure the actuating stem is screwed into the side of the valve rod with the
larger hole (thread relief).
14. Look down the front of the gun while moving the actuating stem back and forth.
15. Observe the holes opening and closing.
Note The valve rod is installed properly when the actuating stem is rotated toward
the back of the gun block and the ports open.
16. Set the actuating stem so that the holes are closed.
Tighten Packing Nuts
17. Tighten both the packing nuts, but do not overtighten.
18. Move the actuating stem back and forth, opening and closing the gun.
19. Retighten both packing nuts.
20. Repeat steps 18 - 19 one more time.
21. Thread the two set screws and seals into the top side of the gun block.
22. Reinstall the hose fitting and O-ring for the resin and hardener hoses on the rear of the gun
block.
Reassemble Flush Valve
23. Place the O-ring on the flush valve button.
24. Insert the spring onto the flush valve button.