Hello everyone. I have a wisconsin vh4d engine in a Gehl skid steer. The battery wont charge and I am trying to figure out what type of charging system that I have. I looked for the 2 black boxes that i have heard being talked about but cant find any. Any help would be greatly appreciated.
- Thread starter Rogerb88
- Start date
Bob Bancroft
Well-known Member
- Location
- Aurora NY
There is no obvious, belt driven alternator hanging on the engine?
Bob Bancroft
Well-known Member
- Location
- Aurora NY
It has been a long long time since I worked on a VH4D. As I recall, any generator or alternator was belt driven off the engine. I can't imagine they went to an internal, flywheel built in system, like in a lawn mower engine. Is there possibly an alternator driven somewhere else from the machine? I take it you don't have a manual.
wore out
Well-known Member
Once the generator era passed most had "under flywheel alternators".
The following links may be of some help.
http://www.pittauto.com/customer/piauel/pdf/Wisconsin_FlywheelAlternators.pdf
https://www.wisconsinmotorscanada.ca/wchargingsystems.htmlhttp://www.pittauto.com/customer/piauel/pdf/Wisconsin_FlywheelAlternators.pdf
If there's no external generator or alternator, my guess would be it has an under the flywheel magnet system with a stator that produces
AC. On those systems there's an external Rectifier (black box looking component with wires attached) which can go bad and replacement isn't
hard or expensive. The other problem is the under the flywheel stator can go bad develop an open winding thus no AC voltage is produced.
When running the two wires exiting out from the stator should show an AC voltage (I cant say the exact number, maybe 20 or more volts
AC???) while the Rectifiers DC output might be near 13 or so volts depending on if working and coupled to the battery...
Look for a small black box with wires attached that being (if correct box) the rectifier and for near DC battery voltage on one terminal
and higher AC voltage on the two stator output terminals when running IFFFFFFFFFF Stator and all else is okay
Sorry I have no idea where its located grrrrrrrrrr
John T
AC. On those systems there's an external Rectifier (black box looking component with wires attached) which can go bad and replacement isn't
hard or expensive. The other problem is the under the flywheel stator can go bad develop an open winding thus no AC voltage is produced.
When running the two wires exiting out from the stator should show an AC voltage (I cant say the exact number, maybe 20 or more volts
AC???) while the Rectifiers DC output might be near 13 or so volts depending on if working and coupled to the battery...
Look for a small black box with wires attached that being (if correct box) the rectifier and for near DC battery voltage on one terminal
and higher AC voltage on the two stator output terminals when running IFFFFFFFFFF Stator and all else is okay
Sorry I have no idea where its located grrrrrrrrrr
John T
Billy Shafer
Well-known Member
Model and serial number would help. What you are asking is like. Saying my car wont start. What is wrong with it.
Bob Bancroft
Well-known Member
- Location
- Aurora NY
Indeed, as "wore out" has shown us, Wisconsin went to a flywheel alternator. Your box, or boxes could well be hidden in the shrouding. Have you removed any?
"Your box, or boxes could well be hidden in the shrouding"
Bob, I bet you're correct. With NO Alternator or Generator located elsewhere he has to have the under flywheel AC Alternator with a necessary black box rectifier SOMEWHERE ???????????? and I've seen them go bad.........
John T
Bob, I bet you're correct. With NO Alternator or Generator located elsewhere he has to have the under flywheel AC Alternator with a necessary black box rectifier SOMEWHERE ???????????? and I've seen them go bad.........
John T
https://www.ebay.com/itm/Wisconsin-VH4D-Engine-Stator-May-Fit-W4-1770-and-VF4D/164351733793?hash=item2644207021:g:zpsAAOSwTNFfRExY
You can see what the stater looks like under the flywheel.
On my Gehl HL3030 with Wisconsin engine I put a 10 or 12si Delco alternator
on. I was missing to many parts to go original.
You can see what the stater looks like under the flywheel.
On my Gehl HL3030 with Wisconsin engine I put a 10 or 12si Delco alternator
on. I was missing to many parts to go original.
buickanddeere
Well-known Member
Two or three wires from the Stator carrying AC power . The AC is converted to DC by the rectumfire . The voltage is held down to 13.8V or so via a zernor diode in the voltage regulator . The regulator just grounds out enough power to keep the voltage from climbing above 13.8V .
It seems the majority of the comments lead to stator with rectifier and regulator. With that being said I am working on removing the engine shroud but not having much luck. Cant seem to find all the bolts holding it on plus there appears to be 2 bolts inside the lower shroud section that I cant get a socket to fit on them. I was hoping to find a diagram that might show where all the bolts are but haven't found anything yet. I appreciate all the comments and any other suggestions would be great. Thank You. I was wondering if I could just pulll the flywheel off and find the rectifier and regulator behind it or should I be looking somewhere else?
buickanddeere
Well-known Member
The Rectumfire and Zenor voltage regulator get hot. They are usually placed on a heat sink and located in airflow somewhere .
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