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#Post#: 1928-------------------------------------------------- |
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Rio Grande 8454 Buzzing Noise |
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By: Andy77 Date: March 7, 2018, 7:05 pm |
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I bought a Rio Grande 8454 at an auction last weekend. It makes |
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a rather loud buzzing noise when I run it. I don't know the |
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name of the parts very well but would say it is the e-unit. The |
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noise is not coming from the motor. Any thoughts on what is |
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causing the noise and how it can be fixed? |
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#Post#: 1929-------------------------------------------------- |
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Re: Rio Grande 8454 Buzzing Noise |
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By: TrainLarry Date: March 7, 2018, 9:03 pm |
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The buzzing is from the E-Unit. The old E-Units all buzz to a |
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certain extent and is part of the Lionel experience. |
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The only way to eliminate the buzz is to replace the E-unit with |
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an electronic reverse board. |
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Dallee Electronics makes such boards. |
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https://www.dallee.com/Electronic-Reverse-Unit-E-Unit-4-Amp-AC-or-DC-motors-400 |
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Larry |
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#Post#: 1931-------------------------------------------------- |
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Re: Rio Grande 8454 Buzzing Noise |
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By: Andy77 Date: March 16, 2018, 8:12 pm |
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Thanks. At the same auction I bought a 1664 with tender. It |
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was in very bad shape. Motor was locked up and had rust issues. |
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I really just wanted it for parts out of the tender. The |
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engine looks good so I decided to tear into it. The e-unit is |
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definitely shot. I got the motor cleaned up and was trying to |
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bypass the e-unit just to see if I could get the motor to work |
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but so far no success. Should I be able to bypass the e-unit to |
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make the motor run? If so but it�s not working any thoughts on |
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why I can�t get any response from the motor? |
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#Post#: 1932-------------------------------------------------- |
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Re: Rio Grande 8454 Buzzing Noise |
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By: TrainLarry Date: March 17, 2018, 2:13 pm |
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To get the motor to run without the E-Unit, disconnect all the |
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E-Unit wires from the motor. The power wire from the pickups |
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goes to one brush connection. The other brush connection gets |
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connected to one field connection. The other field connection |
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gets connected to ground. The motor will run when power is |
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applied. To reverse the motor direction, switch the connections |
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to the brushes. |
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Larry |
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