A buddy has an RT Classic that had a weird leak around the trigger/on-off area, and I offered to work on his RT for him. I knew it had a bunch of buna orings in it, so started with a complete oring rebuild with AGD rings just to start from a clean slate, and I assumed that would eliminate the leak. It did not. Previously, this RT had run decently for awhile before this problem arose. Unfortunately, my Ninja SHP tank was empty, so I had a standard Ninja V2 with 2000psi, set at 850psi to test with. The leak stops completely when you pull and hold the trigger, so the upper on-off orings are working as they should to shut off the air supply. It's a RT Classic, so the on-off assembly has the single top oring, not the later double set. Here is what I did to eliminate possible culprits:
First, I installed this valve unit/banjo bolt in my other RT that has a CP on-off just to verify there’s nothing wonky about my buddy's RT body/rail/trigger frame, and it’s easier turning the air on and off. Same leak.
Played with front frame screw/banjo bolt tension, no change.
Then I switched out reg pins with another new one I have in my parts kit. Same leak.
Reinstalled the old reg pin and this time switched out on-off assemblies with a new one I have. No change, same leak.
Reinstalled the old on-off and switched out Banjo bolts with a new one I have to see if that’s where the air is leaking out of. No change, same leak.
Switched out the old reg piston with a new one just for giggles, same leak.
Lastly, switched out Lvl 10 carrier for a tighter one, even though this doesn't sound like a Lvl10 leak, the tone doesn't change with a squeegee down the barrel like a carrier leak does. No change, same leak.
Check this video to see what I mean. I was going to get more air and switch out the Lvl 10 bolt with a Lv7 just to completely eliminate the bolt from the equation, but I really don't see a point. This seems like some weird on/off leak I can't explain. I've owned around twenty RT Classics and never had one with a leak that didn't resolve itself through at least one of the steps I've already done.
First, I installed this valve unit/banjo bolt in my other RT that has a CP on-off just to verify there’s nothing wonky about my buddy's RT body/rail/trigger frame, and it’s easier turning the air on and off. Same leak.
Played with front frame screw/banjo bolt tension, no change.
Then I switched out reg pins with another new one I have in my parts kit. Same leak.
Reinstalled the old reg pin and this time switched out on-off assemblies with a new one I have. No change, same leak.
Reinstalled the old on-off and switched out Banjo bolts with a new one I have to see if that’s where the air is leaking out of. No change, same leak.
Switched out the old reg piston with a new one just for giggles, same leak.
Lastly, switched out Lvl 10 carrier for a tighter one, even though this doesn't sound like a Lvl10 leak, the tone doesn't change with a squeegee down the barrel like a carrier leak does. No change, same leak.
Check this video to see what I mean. I was going to get more air and switch out the Lvl 10 bolt with a Lv7 just to completely eliminate the bolt from the equation, but I really don't see a point. This seems like some weird on/off leak I can't explain. I've owned around twenty RT Classics and never had one with a leak that didn't resolve itself through at least one of the steps I've already done.
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