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Author Topic: ? about a 4905A GM  (Read 966 times)
luvrbus
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« on: July 01, 2011, 05:44:38 PM »

Is the 4905A GM a 24 volt system I charging batteries on one and it is wired 24 volt I don't have the manual and I just want to be sure thanks


good luck
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technomadia
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Zephyr - 1961 GM PD-4106-446


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« Reply #1 on: July 01, 2011, 05:54:02 PM »

We recently discovered that the 4106 was the last 12v bus that GM made.  So, believe it would stand to reason that the 4905 would be 24v.

 - Cherie
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Cherie and Chris / Bus tour: www.technomadia.com/zephyr
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roadrunnertex
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« Reply #2 on: July 01, 2011, 06:04:14 PM »

The PD4107 was a 12 volt neg ground coach.
And the P8M4905A is a 24 volt negative ground coach.
jlv
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thomasinnv
Derrick Thomas
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« Reply #3 on: July 01, 2011, 08:18:23 PM »

just so happens I am currently working on a 4905A for a friend, and yes it is 24v neg ground.
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Some are called, some are sent, some just got up and went.

1998 MCI 102-DL3
Series 60 11.1/Alison B500
95% converted (they're never really done, are they?)
luvrbus
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« Reply #4 on: July 01, 2011, 08:22:50 PM »

Derrick you want to come work on another with a bad engine lol  thanks guys and girls

good luck
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