Dragun "The One" comprehensive troubleshooting guide.
The Dragun "The One" marker, also known as the "T1" is an open bolt, electropneumatic marker. It uses a spring returned pneumatic ram to cycle the bolt and fire the marker.
Due to the proliferation of questions about frequently occurring problems, several members of this forum have banded together to create a troubleshooting guide that will hopefully cover every possible problem that you might encounter with this marker. While consulting the instruction manual should be the first thing you do, it is not the best manual in the industry, and there is a lot more to know about your marker than you can find in the maual. So, if you have a problem and the manual doesn't answer your question, hopefully you will find the answer here.
1. Check battery
2. Make sure marker is turned on and safety is "off"
3. Make sure you have air connected and turned on
4. Make sure you have paint in the marker. The eye will prevent it from shooting if it does not detect paint
1. adjust your low pressure regulator using a 3mm allen wrench. Turn the screw in the end of the reg counterclockwise untill the leaking stops, then an additional 1/4 turn. If the problem persists, you can remove the adjustment screw and add some teflon tape to keep it from backing out under fire.
1. Clean and inspect your cup seal and valve O rings. Often, this problem occurs when the marker is in need of lubrication. Two or three drops of oil in the asa might fix it, but is no substitute for proper cleaning and maintenence.
2. Make sure the valve is installed correctly with the large opening toward the barrel of the marker.
1. Clean, lubricate and inspect for damage the three O rings on the front block where they enter the marker body
2. Inspect the inside of the body for scratches that might prevent the O rings from sealing
3. As a last resort, the application of two or three layers of teflon tape to the front block before the O rings are installed can stop leaking.
4. Make sure LPR base O ring is clean and undamaged. This O ring is found on the threads of the LPR where it screws into the front block.
1. Make sure bolt is properly installed, and bolt pin engages ram
2. Make sure your dwell is not set too low. The factory setting of 6 is recommended
3. Make sure the hoses are connected to the solenoid, LPR, and ram cap and have no leaks
4. Make sure your LPR is properly adjusted.
5. Check air pressure going into the marker 200-400 psi
6. Check battery
1. adjust input pressure
2. adjust LPR pressure
3. replace LPR reg seat (valve core)
4. check paint to barrel match
5. check battery
6. clean and lubricate ram
7. check hoses to noid, ram and LPR]
1. reduce rate of fire
2. clean and lubricate inline regulator
3. increase inline reg pressure and lower LPR pressure or dwell
4. make sure valve is clean and lubricated and does not bind in valve body.
1. clean everything completely
2. remove eye cover and clean eye
3. make sure eye is on when firing
4. use a force feed loader like an egg or halo
5. adjust pressures. excessively high pressures can cause the bolt to hit the paint hard. It's not a firearm, it's a paintball marker
6. use better paint
1. check that the bolt sits forward enough in the breech to allow eye to detct ball
2. add O rings to ram piston as needed to space balls forward in the breech.
3. inspect eye, wire and plugs for damage
4. inspect solenoid, wire, plugs, and hoses for leaks or damage
5. adjust LPR
6. clean and lubricate ram, bolt and valve
7. check dwell
8. check battery
9. adjust trigger travel. Make sure switch fully engages with every pull.
Remove grip frame from body
1. Remove the hoses from the LPR and the ram cap by holding the little plastic ring (blue on ram cap) against the fitting, and gently pulling the hose away from the fitting. Next, pull the hose out of the hole in the vertical ASA
2. remove the eye cover with a 2.5 mm allen wrench, and lift eye out of it's niche making sure not to lose the small clear plastic window
3. remove the drop forward from the grip frame
4. remove two 3mm allen screws holding grip frame to body
1. unscrew vertical reg from vertical ASA (front block)
2. remove allen set screw from underside of vertical asa
3. unscrew LPR by turning the hex shaped base counter clockwise
4. remove 3mm allen screw from front underside of body
5. gently pull VASA away from body, making sure not to lose poppet valve and spring
1. pull upwards on bolt pin and slide bolt back out of the body
2. push ram cap retaining pin out of the body from right to left. Make sure to keep your thumb on the ram cap so internals do not spring out of the marker
3. carefully remove ram cap, ram piston, and return spring
1. using a flat head screwdriver, remove the brass valve retaining screw from the underside of the body.
2. using a soft plastic tube, or a barrel swab, gently insert it into the bottom rear tube of your marker and push the valve body out the front. Take care to do this slowly and avoid cutting the O rings on the holes as you push the valve out.
3. during reassembly, make sure the smaller hole in the reg body goes toward the rear end of the marker
1. Remove front of LPR from base.
2. remove brass reg piston from front.
3. remove spring and brass spacer
4. remove adjustment screw
5. using an automotive tire valve tool, remove reg seat / valve core from LPR base
6. replace with new tire valve core
7 during reassembly make sure the screw goes in, then brass spacer, then spring, then brass piston goes in with the skinny end towards the reg's base.
1. remove left grip panel to access battery compartment
2. to adjust trigger travel, with grip frame removed form marker, an allen set screw is visible on the back of the trigger near the trigger hinge pin. Tightening this screw will take up slack in the trigger.
3. Make your marker tournament legal by unplugging your battery then removing the 3 #1 phillips screws that hold your LCD board in. Gently separate the LCD from the main circuit board below. Be very careful with these delicate electronics. You will see a black socket at the top of the board with a diode (small black can with silver stripe at one end) inserted in the socket. Gently remove this diode to lock out all fire modes except semi. Make note of the diode's stripe so you will know how to reinsert it later.