Magnum Venus Plastech ATG Gel Coat Gun - Manual (Page 16)

ATG Chopper Gun Manual
Rev. 05/2012 Page | 16
Handle Assembly
Note: Thoroughly clean and inspect all parts for wear or damage. Replace all
parts with original MVP parts. Open the seal kit and match the o-rings with the
ones being replaced.
11. Replace the o-rings on the trigger valve.
Note: A special tool is available to install the o-rings on the trigger valve –
Trigger Valve O-ring Tool ATC-40103-1.
12. Install the spring on to the trigger valve and install into the front of the gun.
13. Thread the trigger housing into the front of the gun over the trigger valve using
a 7/16 wrench.
14. Thread the trigger lock into the trigger housing.
15. Place the trigger button on to the end of the trigger valve depressing it all the
way, and then tighten the set screw on the side of the trigger button to hold it in
place.
16. Replace the o-rings in the air refinement needle valve on the side of the handle,
the Buna (black) o-ring first then the Teflon (white).
17. Install the packing nut, just till it stops.
18. Place the spring onto the refinement air needle.
19. Lubricate with Super O Lube and install the refinement air needle into the side
of the gun.
20. Replace the o-rings on top of the handle. These o-rings seal the cylinder and
gun head to the handle. Set the handle aside for now.
Cylinder Repair
1.
Remove and check the spring.
2.
Check the inside of the cylinder
3.
Check and clear air ports on the bottom of the cylinder.
4.
Lubricate (SSL-10) the inside of the cylinder.
5.
Reinstall spring into the cylinder.