Generators and Motors
[Home] - [HELP] - [Forums] - [Library] - [Photo Gallery] - [Groups] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Vintage Electrical Equipment > Generators & Electric Motors General Discussion > Onan Generators
Forgot Password? Join Us!

Notices

Onan Generators Restoring, operating and maintaining vintage Onan generators.

Onan Generators

New B (NH-3CR) here need help.


this thread has 45 replies and has been viewed 5501 times

Reply
 
Thread Tools Display Modes
  #1  
Old 01-17-2010, 06:36:15 PM
Terry Vandever Terry Vandever is offline
Registered-I
 
Join Date: Jan 2010
Location: Edinburg, Texas
Posts: 14
Thanks: 11
Thanked 0 Times in 0 Posts
Question New B (NH-3CR) here need help.

I have a Onan gen Mod #6.5 nh-3cr 16000J
Se# c773 247074
I got this out of my fathers motor home before they sold it for scrap. I want to get it running so they can use it for back up power. he's in hes 80's and on oxygen.
It started but when i let go of the start button it dies, it will run as long as i hold it in. On the top are 4 wires that are cut. I don't know what they go to.
#1 is white with red strip
#2 is white with blue strip
#3 is white with black strip
there is not a #4
#5 is black with white strip
Hope some one can help.
Reply With Quote
Sponsored Links
  #2  
Old 01-17-2010, 08:29:47 PM
BTPost's Avatar
BTPost BTPost is offline
Moderator
 
Join Date: Jan 2005
Location: Excursion Inlet, Alaska USA 99850-0090
Posts: 4,818
Thanks: 552
Thanked 1,829 Times in 1,195 Posts
Images: 1
Talking Re: New b here nead help.

The wires on top are for Remote Start, and likely NOT your Problem. You need to get the wiring diagram for your unit, and trouble shoot the Safety Shutdown System
__________________
Bruce in alaska
Reply With Quote
The Following User Says Thank You to BTPost For This Post:
  #3  
Old 01-17-2010, 08:44:49 PM
bobbyz72 bobbyz72 is offline
Registered-III
 
Join Date: Nov 2009
Location: Stafford TX
Posts: 1,281
Thanks: 199
Thanked 406 Times in 312 Posts
Default Re: New b here nead help.

Does it seem to run well, when it does run? First i would make sure the low oil shut down swich is working. Should be above the oil filter.
Reply With Quote
The Following User Says Thank You to bobbyz72 For This Post:
  #4  
Old 01-17-2010, 09:04:22 PM
David C David C is offline
Registered-III
 
Join Date: Mar 2006
Location: Lake Jackson,Texas
Posts: 1,407
Thanks: 1,087
Thanked 898 Times in 575 Posts
Default Re: New b here nead help.

Terry,
PM me your email address and I will email you some factory NH info. It may not be for your spec, but it should be of some help.

David C.
Reply With Quote
The Following User Says Thank You to David C For This Post:
  #5  
Old 01-17-2010, 10:15:37 PM
Terry Vandever Terry Vandever is offline
Registered-I
 
Join Date: Jan 2010
Location: Edinburg, Texas
Posts: 14
Thanks: 11
Thanked 0 Times in 0 Posts
Default Re: New b here nead help.

It does run good, started to tack off shroud around oil fillter but will have to finish tomorrow. Will let you know what i find.
Reply With Quote
  #6  
Old 01-17-2010, 10:27:42 PM
bobbyz72 bobbyz72 is offline
Registered-III
 
Join Date: Nov 2009
Location: Stafford TX
Posts: 1,281
Thanks: 199
Thanked 406 Times in 312 Posts
Default Re: New b here nead help.

Quote:
Originally Posted by Terry Vandever View Post
It does run good, started to tack off shroud around oil fillter but will have to finish tomorrow. Will let you know what i find.
Tip, when taking off the shroud, there is a oil guide under the filter, you have to push up on it to get the shround off. I had to fight mine, then trying to put it back on took me a while to figure out why it would not go back on. The oil director under the filter will pivot slightly, so when you go to reinstall the shroud, be sure its in the up/aginst the oil filter positon, so the shroud will fit back on...
Reply With Quote
The Following User Says Thank You to bobbyz72 For This Post:
  #7  
Old 01-19-2010, 05:14:35 PM
Terry Vandever Terry Vandever is offline
Registered-I
 
Join Date: Jan 2010
Location: Edinburg, Texas
Posts: 14
Thanks: 11
Thanked 0 Times in 0 Posts
Unhappy Re: New B (NH-3CR) here need help.

Ok I found the low oil psi switch and disconnected it, but it still shuts off.
Reply With Quote
  #8  
Old 01-19-2010, 11:38:02 PM
Lloyd H Lloyd H is offline
Subscriber
 
Join Date: Feb 2008
Location: Chester, Illinois, USA
Posts: 519
Thanks: 169
Thanked 158 Times in 122 Posts
Default Re: New B (NH-3CR) here need help.

Just kinda guessing here, R1 resistor open or shunt field circuit open, maybe just broken wire. If you PM me a good email I can send service manual. It has a comprehensive trouble shooting section. Lloyd H.
Reply With Quote
The Following User Says Thank You to Lloyd H For This Post:
  #9  
Old 01-20-2010, 12:52:49 AM
bobbyz72 bobbyz72 is offline
Registered-III
 
Join Date: Nov 2009
Location: Stafford TX
Posts: 1,281
Thanks: 199
Thanked 406 Times in 312 Posts
Default Re: New B (NH-3CR) here need help.

Since your not ever going to use it in an rv again, why not simplify the wiring, and get rid of your problem for sure. Im guessing your unit looks pretty much like this one in the pic, only mine has been simplifyed. Only wires missing im my pictures is the battery cable, and low oil shut down wire. If you want i can walk you through it... very easy. Step one, rip out all wires and relays.
Attached Thumbnails
Click image for larger version

Name:	p1010001.jpg
Views:	300
Size:	89.7 KB
ID:	71786   Click image for larger version

Name:	P1010002.jpg
Views:	317
Size:	134.8 KB
ID:	71787  
Reply With Quote
The Following User Says Thank You to bobbyz72 For This Post:
  #10  
Old 01-20-2010, 03:03:24 PM
HondaBob HondaBob is offline
Registered-I
 
Join Date: Jan 2010
Location: Katy, Texas
Posts: 18
Thanks: 3
Thanked 8 Times in 6 Posts
Default Re: New B (NH-3CR) here need help.

Bobbyz72 - I'd like to know more about how you simplified the wiring on your unit.
Reply With Quote
The Following User Says Thank You to HondaBob For This Post:
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 12:11:24 AM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2016 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277