Wanderlodge Owners Group  
BuyByeBlueBird.com
Donate

Go Back   Wanderlodge Owners Group > Mechanic's Corner > Generators

Generators In this forum we will try to answer any of your questions about the different model generators that can be found on Blue Bird coach's.

Site Search:
Reply
 
Thread Tools
  #11  
Old 06-24-2010
Randy Dupree's Avatar
Randy Dupree Randy Dupree is offline
Forum owner
 
Join Date: Dec 2007
Location: Archer,Fl
Posts: 34,794
Default

is the fuel soleniod itself good?
__________________
DO NOT SEND PM
email me at randy@randydupree.com only.

Randy Dupree
2000 LXI 43
Bainbridge,Ga.
Archer Fl.
www.buybyebluebird.com

randy@randydupree.com
Reply With Quote
  #12  
Old 06-24-2010
Jim Harvie Jim Harvie is offline
Senior Member
 
Join Date: Jul 2009
Location: Lancaster
Posts: 726
Default

Mike. Try removing the wires going to the sensors, and instead of grounding them, leave them disconnected, then try starting it.
When the wires complete the circut to ground, that's when the engine should shut down. (I think you did it backwards?)
__________________
Jim Harvie
Lancaster MA.
1982 35 FT. FC, SB
Reply With Quote
  #13  
Old 06-24-2010
dslcat's Avatar
dslcat dslcat is offline
Member
 
Join Date: Nov 2009
Location: Pasadena
Posts: 20
Default

Thanks Gardner and Tom,
Today in the 97 degree heat I reassembeled what I had torn apart on my generator and then tried the voltage test while holding the the fuel solonoid open. Bad news 1.4 volts AC was the reading. From what I read in the 12.5 KW manual that came with the Bird originaly, when no voltage is detected after start up the solonoid recieves a signal to shut down. Could be brushes: who knows?? I read Popeye's story where the circumstances were simular and the entire kohler part of the system was toast. Hope that is not the case!
__________________


Mike & Adrienne Trout
Pasadena, MD
82 FCSB 35'
FMCA 64467s
Reply With Quote
  #14  
Old 06-25-2010
thomas_sorrentino's Avatar
thomas_sorrentino thomas_sorrentino is online now
Senior Member
 
Join Date: Jan 2008
Location: Bedford Hills, NY
Posts: 920
Default

Quote:
Originally Posted by dslcat View Post
Thanks Gardner and Tom,
Today in the 97 degree heat I reassembeled what I had torn apart on my generator and then tried the voltage test while holding the the fuel solonoid open. Bad news 1.4 volts AC was the reading. From what I read in the 12.5 KW manual that came with the Bird originaly, when no voltage is detected after start up the solonoid recieves a signal to shut down. Could be brushes: who knows?? I read Popeye's story where the circumstances were simular and the entire kohler part of the system was toast. Hope that is not the case!
Mike,

I have the same generator and had the same symptoms three times! Once it was the voltage regulator, once it was a loose connection on a terminal in the control box and the other was a broken wire on brush. If you look at the brushes look very carefully at the wire coming from the brush. Mine ended up being a conically wore slip ring (I know of two other Yanmar/Kohlers that have had this problem) which was causing the brush to jump up and down so much the wire broke.
I would check brushes and connections first, it doesn't cost anything to check these. Good luck and let us know the fix.
__________________
Tom Sorrentino
1987 PT38
Bedford Hills, NY
Westchester Sandblast
Reply With Quote
  #15  
Old 06-25-2010
dslcat's Avatar
dslcat dslcat is offline
Member
 
Join Date: Nov 2009
Location: Pasadena
Posts: 20
Default

Thank you Tom,

Last night I was reading the procedure to change slip rings. I don't know yet but that is likely in my future. Hopefully just brushes. If it is just brushes is there any explanation of changing just these on an older Kohler? Is there a way to diagnose the regulator as the problem? I'll check the brush wires. Can't find lose wires in the control box.
__________________


Mike & Adrienne Trout
Pasadena, MD
82 FCSB 35'
FMCA 64467s
Reply With Quote
  #16  
Old 06-25-2010
thomas_sorrentino's Avatar
thomas_sorrentino thomas_sorrentino is online now
Senior Member
 
Join Date: Jan 2008
Location: Bedford Hills, NY
Posts: 920
Default

Mike,

I don't remember anything special about changing the brushes, I would have to assume it was intuitive by looking at when I did it. When the brush I replaced failed shortly after I replaced it, is when I took a closer look at the Slip rings and noticed the oblong shape.
I think there is a way to test the regulator, but it was too complicated for me so I took a chance and replaced it that one time and got lucky! In your case if the brushes do look good I would take a chance with a new regulator.
__________________
Tom Sorrentino
1987 PT38
Bedford Hills, NY
Westchester Sandblast
Reply With Quote
  #17  
Old 06-25-2010
racin41bb's Avatar
racin41bb racin41bb is offline
Senior Member
 
Join Date: Feb 2008
Location: Roanoke
Posts: 723
Default

Mike,

Our kohler/yamar will start and run for 5-10 seconds then shut down if there is a significant load in the circuit. We have a high output charger on a dedicated circuit. If I forget to unplug the charger the genset will start but shut down quickly.

Check water heater switch, a/c, even electric heaters and make sure they are not trying to draw power when you start your generator.
__________________
Bill & Rita Brinner in Roanoke, VA
"IRON HOUSE"
1987 FC-35SB ('87 factory demo)
Cat 3208ATAAC-300
12.5kw Kohler/Yanmar (w/slide)
"Magic carpet made of steel"
Steve Goodman 1970

"You never fail until you stop trying".
Reply With Quote
  #18  
Old 06-28-2010
thomas_sorrentino's Avatar
thomas_sorrentino thomas_sorrentino is online now
Senior Member
 
Join Date: Jan 2008
Location: Bedford Hills, NY
Posts: 920
Default

Mike,

Any outcome on this?
__________________
Tom Sorrentino
1987 PT38
Bedford Hills, NY
Westchester Sandblast
Reply With Quote
  #19  
Old 07-09-2010
alvahall's Avatar
alvahall alvahall is offline
Senior Member
 
Join Date: Oct 2008
Location: Cynthiana
Posts: 1,157
Default

Yesterday while traveling in hot weather with the generator running, it suddenly stopped with the same symptoms Mike described. It will start quickly and run for 2 or 3 seconds and shut down. It's not producing any voltage when the fuel solenoid is held in to keep it running. Tightened all of the terminals in the control box, checked the AC circuit breakers and checked for 12V going into the control circuit. The manual says to check the 8 amp fuse in the end bracket. Does anyone know where this fuse is? I crawled under with a flashlight and can see the end of the generator. There is a square plate with louvres covering the back end.
__________________
John & Nancy Hall
Cynthiana, Ky
1988 Narrow PT40
"The Aviary"
Reply With Quote
  #20  
Old 07-09-2010
thomas_sorrentino's Avatar
thomas_sorrentino thomas_sorrentino is online now
Senior Member
 
Join Date: Jan 2008
Location: Bedford Hills, NY
Posts: 920
Default

Quote:
Originally Posted by alvahall View Post
Yesterday while traveling in hot weather with the generator running, it suddenly stopped with the same symptoms Mike described. It will start quickly and run for 2 or 3 seconds and shut down. It's not producing any voltage when the fuel solenoid is held in to keep it running. Tightened all of the terminals in the control box, checked the AC circuit breakers and checked for 12V going into the control circuit. The manual says to check the 8 amp fuse in the end bracket. Does anyone know where this fuse is? I crawled under with a flashlight and can see the end of the generator. There is a square plate with louvres covering the back end.

John,

I've had the end cover off my generator to change the slip rings and have looked, but never found that fuse. I don't think it's there!
__________________
Tom Sorrentino
1987 PT38
Bedford Hills, NY
Westchester Sandblast
Reply With Quote
Reply

Bookmarks

Thread Tools

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
YANMAR SERVICE MANUAL iamflagman Generators 5 11-30-2013 06:36 PM
Yanmar maintenance NH Bill Generators 10 08-21-2011 01:15 PM
Kohler-Yanmar Glow Plug Relay RAGster Generators 4 04-04-2010 04:23 PM
kohler low voltage...Help please Robmk2 Generators 10 08-22-2009 08:04 PM
Kohler parts bloomas Generators 2 06-22-2008 07:15 PM

Web Search:

All times are GMT -4. The time now is 06:15 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.