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AC-12 water pump

1758 Views 5 Replies 3 Participants Last post by  NHSTEAMER
Can anyone please help me, I have a AC-12 when I tried running it the first time the axle pump did not seem to work. Noticing that under steam with low water I tried using the hand pump and split one of the water lines. I got new tubing from Accucraft today and tried using the hand pump again to Hydro the boiler (cleaned the check valve and bypass first) the hand pump would not work unless the bypass was open only a crack, which reduced the amount of water going into the boiler significantly. I noticed that the feed water goes into the check/bypass on the bypass side (front of loco) and the return is on the check side (boiler side) which did not make sense to me so i swapped the tender connections and the hand pump worked perfect. with only a few pumps the boiler hydro-ed to 60psi but in this setup the bypass return did not work. I am confused and in need of some advice./DesktopModules/NTForums/themes/mls/emoticons/sad.gif
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Might want to check the lines on the boiler, could have been installed backwards- see if switching them will correct the situation
That is what I was thinking but I wanted to ask someone before I bent the copper lines (they seem to fitted to there current location) I will try that in the AM. Then spend some time building a treadmill to test it on.
That fixed it, kind of a pain to change due to the pipes being cut and fitted to the way they were. I ran it on a treadmill and it ran great./DesktopModules/NTForums/themes/mls/emoticons/w00t.gif
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Good to talk with you. I'm glad to hear Ryan's solution worked out and that you are ready to rock and roll.

Best regards,

Alan it was a plesher speaking to you as well and I look forward to steaming with you soon.
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