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Old 11-02-2017, 10:03 AM   #11 (permalink)
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OK I did this and oil blew out of the back of the bolt all over me, I was discouraged and went upstairs and ate cookies
out the back of the bolt? was the valve in the marker?
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Old 11-02-2017, 12:30 PM   #12 (permalink)
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if you order the rebuild kit be sure and get extra banjo bolt o rings as they are the biggest pain on that marker.
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Old 11-02-2017, 01:03 PM   #13 (permalink)
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out the back of the bolt? was the valve in the marker?
Yes, the marker was completely put together
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Old 11-02-2017, 02:55 PM   #14 (permalink)
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out the back of the bolt? was the valve in the marker?
I think he means out of the velocity adjuster.

Overpressure might explain the power tube leak in the first place.
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Old 11-02-2017, 04:28 PM   #15 (permalink)
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I think he means out of the velocity adjuster.

Overpressure might explain the power tube leak in the first place.
yea, i thought about that after i posted it.
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Old 11-03-2017, 08:42 AM   #16 (permalink)
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I think he means out of the velocity adjuster.

Overpressure might explain the power tube leak in the first place.
Yeah that's what I meant,,,,,totally rookie with RT's. How do I adjust the overpressure?
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Old 11-03-2017, 09:48 AM   #17 (permalink)
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Yeah that's what I meant,,,,,totally rookie with RT's. How do I adjust the overpressure?
That actual setting is not something you mess with, at least without test gauges and test supply regulators.

While the relief in the reg piston can go bad, the first question is whether or not the reg was adjusted too high (or re-assembled at a high adjustment). The relief may be working like it is supposed to. If the reg adjuster may be turned in too far, back it out a couple of turns before you put air on it and slowly turn it in and test fire in between.

The more common problem is a seal failure on the reg pin assembly or reg seat. The reg pin is the little hollow tube (not really a "pin") with a pair of o-rings inside the valve body (part #29 on the ReTro valve diagram). The classic RT reg has very similar internals as the other RT-type valves. If you buy parts from Tuna or AGD, make sure you are talking about the "Classic RT", as most parts and seals are interchangeable but not all.

Exploded assembly pictures

Don't be too worried. Urethane gets old just sitting around and different oils (non-synthetic) make it age even faster. You can pull a mag out of storage and it may work for a few days before the seals finally give up. While a new seal kit or even a reg piston (with a new relief seal) might be a PITA, the RT should settle in and perform for a very long time.

The biggest problem with classic RTs is that there was a batch of rails that tended to let the the middle o-ring on the banjo bolt leak. Tuna used to have some of the good rails for sale. Otherwise, preventing that leak is tricky. If you can tell that your leak doesn't come from that banjo o-ring between the rail and the valve, then you will never have that particular leak with a decent o-ring.
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Last edited by Spider!; 11-03-2017 at 09:53 AM.
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Old 11-07-2017, 10:10 AM   #18 (permalink)
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Thanks for all this info!!!!! I'll try this asap!!!
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