alternator performance: Yanmar Tractors  -- Other Tractor Brands Discussion Forum and Review alternator performance: Yanmar Tractors -- Other Tractor Brands 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

Kubota Tractors
  Kubota News
  Kubota Price
  Kubota Review
John Deere Tractors
  John Deere News
  John Deere Price
  John Deere Review
New Holland Tractors
  New Holland Tractor Price
  New Holland Tractor Revie
Other Tractor Brands
  Articulated Tractors
  Belarus
  Bobcat Tractors
  Case
  Cub Cadet
  Hinomoto
  Kioti Tractor
  Long
  Massey Ferguson
  Mitsubishi
  Other Tractor Brands
  Other Tractor News
  Shibaura
  Yanmar Tractors
Lawn and Garden Tractors
  Craftsman
  Cub Cadet Garden
  John Deere Garden
  Kubota Lawn Garden
  Other Garden Tractors
  Simplicity
  Toro Wheelhorse
  Ventrac Lawn Tractors
Antique Tractors
  Allis Chalmers
  Case David Brown
  Farmall IHC
  Ford
  Ford 9N 2N 8N
  Fordson
  Harry Ferguson
  John Deere Older
  Massey-Harris Ferguson
  Minneapolis Moline
  Oliver Cletrac Cockshutt
  Restoration
  Tractor Pulling
Tractor Attachments Implements 3ph
  Back Hoe
  Field Mowers Brush Cutter
  Grooming Mowers Finish Mo
  Loaders
  Snowblowers / Snow Plows
  Tillers and Ploughs
  Tractor Implements
  Trenchers
  Wood Chippers 3PH
Tractor Maintenance
  Diesel Fuel Lubrication E
  Tractor Engine Repair Reb
  Tractor Tires
Utility ATV
  All Terrain Vehicles
  John Deere Gator
  Mule Utility Vehicles
General Tractor
  Farming Ranching Agricult
  Photo Contest
  Size Tractor Needed
  Tractor Projects
  Tractor Safety
  Welding
Chinese Tractors
  Jinma Farmpro Agracat
  NorTrac Tractors
  Other Chinese Tractors
Cars
  All Brands
  Audi VW
  BMW
  Car Tires and Maintenance
  Chrysler
  Exotic, Sports, Racing
  Ford Cars
  General Motors
  Honda
  Hyundai
  Mercedes
  News
  Nissan
  Subaru
  SUV and Trucks
  Toyota Cars
Trucks Trailers
  Chevy Pickup Trucks
  Dodge Pickup Trucks
  Ford Pickup Trucks
  Toyota Pickup Trucks
  Chevy Pickup Trucks
  Dodge Pickup Trucks
  Ford Pickup Trucks
  Toyota Pickup Trucks
Home Building
  Alternate Electric Energy
  Barns Pole Barns
  Buying Ranch Farm Acreage
  Carpentry
  Contractors
  Electric
  Excavation
  Moldings Finish Trim
  Other Home Building
  Pellet Stoves
  Plumbing
  Wood Stoves
Tools
  Electirc Power Tools
  Gas Power Tools
  Generators
  Shop Tools
  Techniques Howto
Landscape
  Flowers Shrubs Garden
  Golf Course Maintenance
  Irrigation Systems
  Landscape Design
  Landscape Lighting
  Landscape Maintenance
  Lawn, Turf, and Grass
  Vegetable Gardening
Construction
  Caterpillar
  Komatsu
  Wheel Loaders
Current Events Health Happiness
  Current Events
  Dogs and other Pets
  Electronics And Computers
  Food
  Health
  Just For Fun Off Topic
  Movies Music Games
  Personal Finance Investme
  Sports Outdoors
Tractorpoint Site
  Member Photos
  Site Members
  Website Operations Howto


New As Posted | Active Subjects



Click to Post a New Message!

Discussion Boards > Active Subjects > Messages as Posted > Yanmar Tractors Forum

Page [ 1 ] |
Reply | Pop Up Window Reply | Add PhotoAdd Photo
 11-15-2008, 23:00 Post: 157903
civilkane



Join Date: Nov 2008
Location: Olalla, WA
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 3

2
Filter by User
 alternator performance

I have a Yanmar 1510D and suspect that the alternator is not providing current to the battery. The battery is new.

The alternator has two blue wires that appear to connect to the regulator.

Does the unit produce AC or DC output and how can I determine whether the alternator is functioning correctly?

Thank you.






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




Bookmarks: Digg It | Del.icio.us |
 11-15-2008, 23:10 Post: 157904
kwschumm



View my Photos

View my Photos  Pics
Join Date: Feb 2003
Location: NW Oregon
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 5764
 alternator performance

Basic troubleshooting would require a volt meter.

What symptoms are you having that makes you suspect that the alternator is not working? If the battery is losing charge, over what period of time is the charge lost and how low does the voltage go?

An alternator naturally produces AC current, however there will be a series of diodes somewhere in the circuit converts it to DC. Usually the diodes are built right into the alternator.

With the engine off the battery voltage should measure about 12.6V. With the engine running the alternator should provide a voltage of probably 13.5-14 volts or so.

If you don't get that voltage it could be the alternator, regulator, or wiring harness. Your alternator may have a built-in regulator. The best way to test an alternator is to take it to an electrical shop (or maybe NAPA) and have them bench test it.






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




Bookmarks: Digg It | Del.icio.us |
 11-15-2008, 23:36 Post: 157905
greg_g



View my Photos

View my Photos  Pics
Join Date: Jan 2004
Location: Western Kentucky
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1816

2
Filter by User
 alternator performance

The output of your alternator is DC. The output post is typically marked B+. If in doubt, it's typically a larger gauge wire than the other two or three wires that go to the voltage regulator and idiot light if so equipped. A properly operating alternator should put out up to +14.5 volts. Note however, that the higher the battery charge state, the less charging voltage it will draw from the alternator. In other words, a low battery will draw max voltage from the alternator. A fully charged battery will draw only maintenance voltage. That explains why you may never see the same reading twice.

Set your multimeter to read DC volts, and select the lowest scale that includes 14.5 volts. Put the positive probe on the + post of the battery. Touch the negative probe to the - post. Observe the reading. A good battery should indicate between 12.6 and 13.2 volts. Put the tractor in neutral, set the brake and start the engine. Repeat the battery voltage measurement and observe the reading. There should be an increase. The difference between the second reading and the first represents charging voltage to the battery.

Shut off the engine, move the multimeter to the alternator. Tighten the alternator belt if necessary. Start the engine again. The engine restart will drain the battery a little so that fresh charging voltage will be excited out of the alternator for you to see on the multimeter. The positive probe should go on the alternator B+ post, the negative probe on a good ground point. Observe the voltage reading. If it is significantly higher than the 2nd reading you observed at the battery, you're losing voltage in your tractor wiring. The simplest solution is to run a fresh piece of stranded and insulated 10AWG between the B+ post and the hot post on the starter. That bypasses wiring harness losses, by routing charging voltage straight to the battery.

Don't know about your particular Yanmar, but some had a fuse between the alternator and the battery. All else could be good, but a blown charging fuse can completely stop all charging voltage from getting to the battery.

//greg//






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




Bookmarks: Digg It | Del.icio.us |
 11-16-2008, 01:31 Post: 157906
civilkane



Join Date: Nov 2008
Location: Olalla, WA
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 3

2
Filter by User
 alternator performance

Thanks for the responses.

I do have a digital meter and have discovered that the battery voltage at rest is 12.4. Voltage drops some in response to the staring operation and, during engine operation, does not increase as it should in response to normal alternator output. There is no current getting to the battery, but I do not yet know whether this is the result of an alternator, regulator of wiring fault.

Should I expect to see a potential across the conductors leading from the alternator? I would disconnect the connector and check with the engine running, of course.

I'll check this tomorrow.

Thanks for the input.

A L Kane






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




Bookmarks: Digg It | Del.icio.us |
 11-16-2008, 06:24 Post: 157907
greg_g



View my Photos

View my Photos  Pics
Join Date: Jan 2004
Location: Western Kentucky
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1816

2
Filter by User
 alternator performance

For charging voltage on most older Yanmars, you should not need to concern yourself with the smaller gauge wires alternator wires. That's assuming it's equipped with a standard 3-wire alternator. One goes to the voltage regulator, one comes back from the voltage regulator, a 4th (if so equipped) typically feeds an idiot light on the dash. The voltage on these wires is only for instrumentation, lighting, and accessories. Charging voltage is on the larger gauge wire connected to the alternator B+ post. But if you disconnect it, the alternator no longer sees the battery load - so you won't get representative charging voltage readings on the multimeter. Check with the engine running and the wires CONNECTED.

//greg//






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




Bookmarks: Digg It | Del.icio.us |
 11-16-2008, 08:18 Post: 157909
auerbach



View my Photos

View my Photos  Pics
Join Date: Sep 2007
Location: West of Toronto
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 2168
 alternator performance

The heat and vibration under the hood are hard on wires, so start with continuity testing from the battery back.

Yanmar alternators often function for the life of the tractor, but the original voltage regulators seem to last about as long as the fan belt (which you should also check). It is possible that incorrect jump-starting damages them. They cost a bit but I've not heard of one of the new solid-state ones failing.

While troubleshooting, you can use the tractor. After it's started, turn the key to off. No lights or horn, but you won't be draining the battery. After 20 or so starts, charge it.

Some owners hardwire a quick-connect terminal on the outside of the tractor going to the battery, and a matching terminal on their charger. When it's cold I connect a trickle charger between uses. (Those little alternators are designed for use in Japan, where the temps are milder and they tend to run their tractors for longer periods.)






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




Bookmarks: Digg It | Del.icio.us |
 09-09-2009, 17:16 Post: 165551
johnymcaffee



Join Date: Sep 2009
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 3
 alternator performance

SPAM deleted by moderator "Murf".


BTW, for anyone who wants to register a complaint about the (now deleted) SPAM, they can direct their objections to that site's host at the below noted address;

Network Solutions, LLC. "customerservice (AT) networksolutions (DOT) com"


The offending party was:

Ruff Tuff Products
3796 West 2100 South
Salt Lake City, UT 84120

customerservice (AT) rufftuff (DOT) com



NB: You will need to replace the (AT) and (DOT) with the proper symbols.






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




Bookmarks: Digg It | Del.icio.us |
 09-09-2009, 18:45 Post: 165552
earthwrks

TP Contributor

View my Photos

View my Photos  Pics
Join Date: Dec 2003
Location: Home Office in Flat Rock, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 3853
 alternator performance

Are you on crack or something? What do harnesses have to do this?






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




Bookmarks: Digg It | Del.icio.us |
Reply | Pop Up Window Reply | Add PhotoAdd Photo


Page [ 1 ] |

Discussion Boards > Active Subjects > Messages as Posted > Yanmar Tractors Forum

Thread 157903 Filter by Poster:
auerbach 1 | civilkane 2 | earthwrks 1 | greg_g 2 | johnymcaffee 1 | kwschumm 1 |

 (advanced search)

Picture of the Day
pauljmtz

Other Tractor Brands - Foton ft404 black diesel splat out of exhaust
Foton ft404 black diesel splat out of exhaust


Unanswered Questions

Belarus 825 - needs a new clut
Drain Cock
Need more hydraulic flow for s
HINOMOTO HB 501
Belarus 420A - Problems bleed

Active Subjects

460 Long hyd leak
460 axle
Key will not start engine
6x4 engine rebuild vsHarbor Fr
Things we say and what do they
The Plus and Minus of Ignoring
Looking to buy a New Pickup Tr
Need more hydraulic flow for s


Hot Topics

Tractor Category 1 2 3 Hitch s
Duerr hp 678 Chipper replaceme
Gator 620i gas in engine oil
KUBOTA Tractor Trouble Free Qu
Gator 6x4 Overheating problem
Duerr hp 678 Chipper Manual
Adjusting 7308 Pressure Relief
Long 460 hydraulic problem


Featured Suppliers

Mountain Creek Labradoodles
      MountainCreekLabradoodles.com





New Forums on Gun Sport Shooting and Hunting -- BarrelPoint.com  New Forums on Horses ManePoint.com
Talk Horses at ManePoint
Hunting + Gun Sports at BarrelPoint



Most Viewed

+ Yanmar 1500 how to operate
+ What are wet disk brakes
+ Yanmar 187D information
+ YM 1500 transmission fluid change
+ Yanmar 1500 Diesel Tractor
+ yanmar 1500D overheating
+ Roger Whats so great about Yanmar 336D
+ Top 5 things to do when bringing home a new tracto
+ Yanmar 155d
+ yanmar 155d

Most Discussion

+ Yanmar 1500 how to operate
+ No more parts for Yanmars
+ No More Parts for Yanmars -- P
+ Feeding Deer
+ Oil filter
+ Yanmar 1500D 4 wheel drive doe
+ engine compression
+ Top 5 things to do when bringi
+ Help Victim of JD Stick Shock
+ Front wheels and tires for an

Newest Topics

+ 1500D Dash lights
+ Yanmar 1500D hydraulic fluid change
+ 165d sat for 2 years - battery dead Charged and w
+ Oil Leaking 1500D
+ Yanmar 2000 over heated
+ Yanmar apparal
+ Starter for Yanmar YM2000 Greymarket
+ Winterize
+ Yanmar 2200 Tractor Loader fit Yanmar 336D Tractor
+ Yanmar 70s-90s tractor parts dealers and support
















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