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Onan Generators

Onan 7.5 jb-5dr/174440aa


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  #1  
Old 11-14-2017, 09:25:58 PM
RETCPO RETCPO is offline
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Default Onan 7.5 jb-5dr/174440aa

Looking at a generator and could use some help.
ONAN 7.5 JB-5DR/174440AA
Serial NO E770237484

What does the 5DR stand for? (3 phase?)
Manufactured MAY 1977
SPEC AA

Any other information that can be gained from the collective mines?

Respectully
Keith
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Old 11-14-2017, 09:30:21 PM
Wayne 440 Wayne 440 is offline
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Default Re: Onan 7.5 jb-5dr/174440aa

https://www.smokstak.com/forum/showthread.php?t=119313

120/240 3 phase, 4 wire
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Old 11-14-2017, 09:32:43 PM
Chas183 Chas183 is offline
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Default Re: Onan 7.5 jb-5dr/174440aa

Voltage codes are here.
https://www.smokstak.com/forum/showthread.php?t=119313

Looks to be 120/240 3 phase 4 wire.

Just little further down Kevin K has a nice PDF for download.

chas183
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Old 11-15-2017, 02:28:05 AM
Ray Lynch Ray Lynch is offline
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Default Re: Onan 7.5 jb-5dr/174440aa

Spec AA is a YD gen end.
Ray
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Old 11-15-2017, 07:01:25 AM
MBB MBB is offline
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Default Re: Onan 7.5 jb-5dr/174440aa

I believe you have 1 to many 4s in the model number. Here is the build sheet for the unit. Very desirable. 4Wire. B150 extended Stack. (Had to go back and check I never saw a 4 wire with extended stack. Usually they are 12 wire.) No need to de-rate for single phase. It also has a meter panel and Housed providing its all there.
Attached Files
File Type: pdf 7.5JB5DR17440AA.pdf (30.9 KB, 15 views)

Last edited by MBB; 11-15-2017 at 07:39:23 AM.
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Old 11-15-2017, 09:25:49 AM
RETCPO RETCPO is offline
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Default Re: Onan 7.5 jb-5dr/174440aa

MBB you're right!
7.5 JB-5DR/17440AA
Serial NO E770237484
Fat fingers and not proof reading strikes again...
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Old 11-15-2017, 09:56:36 AM
MBB MBB is offline
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Default Re: Onan 7.5 jb-5dr/174440aa

Don't know the condition or price but it's a good one.
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