Kubota B7800 engine shut down - no power: Kubota Review  -- Kubota Tractors Discussion Forum and Review Kubota B7800 engine shut down - no power: Kubota Review -- Kubota Tractors Discussion Forum

  parts   |   manuals   |   discussion   |   photos   |   podcast   |   reviews   |   specs   |   dealers   |   classifieds   |   contact   |   faq   |   myProfile   |   home          Login Now | Sign Up


FAQ:   What is a tractor?

Forum Index
New As Posted | Active Subjects



www.emerichsales.com - New & Used Equipment
          View Tractors For Sale!


www.partsbynet.com - Lawn and Garden Equipment Parts


Bernardsville Landscape Lighting
Click to Post a New Message!

Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

Page [ 1 ] |
Reply | Pop Up Window Reply | Add PhotoAdd Photo
 04-06-2013, 13:32 Post: 186595
mbailey



Join Date: Apr 2013
Location: mahopac ny
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 4

3
Filter by User
 Kubota B7800 engine shut down - no power

just installed the alternator upgrade kit. started tractor and ran about one minute before it just stopped running. went to restart and now there is no power to instrument panel. absolutely no electric. battery is brand new. power is showing at starter and alternator contacts. no fuses are blown (50 amp slow blow on new alt wire kit and all fuses on right side main board). checked seat switch, no pto's engaged. Anyone come across this issue.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

 04-06-2013, 21:21 Post: 186601
kthompson



View my Photos

View my Photos  Pics
Join Date: Oct 2005
Location: South Carolina
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 5106
 Kubota B7800 engine shut down - no power

That sure seems about the time needed to burn a wire or circuit out. Are you certain nothing was wired wrong? I am not familiar with the upgrade.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

 04-06-2013, 21:38 Post: 186604
mbailey



Join Date: Apr 2013
Location: mahopac ny
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 4

3
Filter by User
 Kubota B7800 engine shut down - no power

I don't think so, upgrade is pretty straight forward. coincidentally my buddy was using the tractor a couple of days before and he said the battery was dead. when I picked up the upgrade kit, I also picked up a new battery. did a battery check on old battery and its fine under test load. I still put the new battery in anyway and when I went to start it after installing the upgrade kit I noticed that it cranked slowly, and got weaker as it craked, exactly like a weak battery. It's got to be related. I think I'm gonna have to bite the bullet and call in a pro for this one!! thanks for the response though, much appreciated.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

 04-07-2013, 19:08 Post: 186607
Art White



View my Photos

View my Photos  Pics
Join Date: Jan 2000
Location: Waterville New York
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 6840
 Kubota B7800 engine shut down - no power


There is more then one problem. I'd doubt that you have two batteries that have a bad cell but the old one still might.
The starter might be drawing more then it should but that can be checked.
The dash might be the ignition switch but it also might be the cranking problem. To not have it start when cranking, then there is a problem with the fuel shut off or power to it.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

 04-08-2013, 07:36 Post: 186608
Murf

TP Contributor

View my Photos

View my Photos  Pics
Join Date: Dec 1999
Location: Toronto Area, Ontario, Canada
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 7020
 Kubota B7800 engine shut down - no power

It doesn't say if the tractor cranked on restart attempt, did it?

I think Art is on the right track though. The dash and fuel shut off solenoid are tied together.

I suspect you just missed noticing that the dash went dead at the same time it stopped. The stop would certainly be as you described if the fuel shut off solenoid lost power.

I would recheck all wires that were involved in the alternator changeover.

Best of luck.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

 04-08-2013, 23:34 Post: 186614
mbailey



Join Date: Apr 2013
Location: mahopac ny
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 4

3
Filter by User
 Kubota B7800 engine shut down - no power

UPDATE...found the problem. rechecked all wiring and when I unwrapped the original wiring harness that goes from the dash to the starter/alternator I found the red power wire was fed into a plastic connector, with the red wire feeding out of the plastic connector on the other pole and then out to the starter. Inside the connector was a little aligator clip jump from one pole to the other!! (loose by the way) I have no idea what the previous owner was doing or even thinking about when he wrapped this cluster #$&* up. Regardless, cut out the connector reconnected wire properly and presto, lights to the dash and cranked like a spring chicken. On a proud note, the alternator upgrade works great. Highly recommended for anyone who is tired of the brake lights used for headlights feature!! kubota engineers dropped ball on that one!
Thanks for the input everyone, love this website. a lot of great insight from real tractor heads






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

Reply | Pop Up Window Reply | Add PhotoAdd Photo


Page [ 1 ] |

Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

Thread 186595 Filter by Poster:
Art White 1 | kthompson 1 | mbailey 3 | Murf 1 |




Most Viewed

+ Kubota AT70s Rear Tine Tiller
+ Kubota HST GST Shuttle or Gear Transmission?
+ Best Boom Mower for Kubota B2710 Tractor
+ Definition of Tractor Loader Breakout force ?
+ Kubota B3200 vs. JD 2720
+ New Kubota L3240 First Look Review
+ Kubota Transmission Fluid SUDT
+ Kubota BX2230 VS kIOTI CK20HST
+ KUBOTA Tractor Trouble Free Quality
+ kubota bx25 vs john deere 2720

Most Discussion

+ How to match Truck to Trailer
+ New Kubota L3240 First Look Re
+ Kubota Number 1 in Compact Tra
+ KUBOTA Tractor Trouble Free Qu
+ Source for after market produc
+ 3-Point Quick Hitch
+ B 7100 ST - Making the Leap
+ Kubota Transmission Fluid SUDT
+ Kubota vs John Deere Compact T
+ L3130HST vs. JD4310Hydro HELP

Newest Topics

+ B2601 vs bx1800
+ 2000 B2710 I need a loader dealer wants over 4K an
+ Upgrading the Factory 145amp Alternator to 40 Amp
+ Kubota BX2750 Snowblower Fan Shear Pin Alignment
+ Size Kubota for Homeowner Use
+ I need some OEM Quality decals for a B7500 DT-TLB
+ Kubota 4750DT Fuel Venting
+ B1700 Hydostatic unit leaking
+ Kubota B2710 New to meadvice
+ Kubota L4330 three point hitch won t rise













Turbochargers for Tractors and Industrial Machines
Cab Glass for Tractors and Industrial Machines

Alternators for Tractors and Industrial Machines
Radiators for Tractors and Industrial Machines

Driveline Components for Tractors and Industrial Machines
Starter Motors for Tractors and Industrial Machines