I recently got a Ford 841,when I first got the tractor it was not charging so I had the generator rebuilt and replaced the regulator to be on the safe side.The first reg. lasted about a month before it quit charging.They replaced it for me, the second one lasted about 30 min.then it stuck closed and drained the battery after shutting the tractor off. I then got one from CNH,now the problem I'm having is when first starting the tractor it doesn't want to start charging until you bring the rpm's up to approx. 2000 then the light goes out and it charges fine until the next time you start.I have considered putting a juicer button on to start it also.I would like Thank You in advance for any help with this matter.
It's 'almost' right.. gennies don't charge good at low rpm.. in many cases.. you have to be at near 1/3 to 1/2 rpm to get positive charge going.
yours needing 2000 rpm may be a sign the genny is going bad, ( has bad brushes ).. or there is extra ressitance int he field circuit. however.. if it charges correctly once started.. then the resistance of the field coils and the field circuit should be ok..( though might have some shorts inthe field coils and it's using higher field current to make appropriate charge.. etc. )
try this.. before the next start, disconnect vreg at genny, and polarize genny by jumping bat to field..
next, slip belt off.. jump bat to arm.. then jumper over to field.. genny should take off spinning real good. if it doesn't start.. or starts then stalls on a partial move.. or spins slow.. you have a gen problem.. perhaps bad segments on comutator.. etc.. or bad brushes. if it needs help starting to spin.. but spins once started.. still points to above problems with genny.
now.. assuming you get it to motor (spin).. hookup the connections fromt he vreg and start her right up.. does she start to charge at a lower rpm?
if so.. shut down and start her again later.. liek an hour or two... back to needing 2000 rpm?
one more thing.. get her to say 1500.. and let her run there for a couple minutes... does she eventually kick in and make the lamp go out?
post back
soundguy
yours needing 2000 rpm may be a sign the genny is going bad, ( has bad brushes ).. or there is extra ressitance int he field circuit. however.. if it charges correctly once started.. then the resistance of the field coils and the field circuit should be ok..( though might have some shorts inthe field coils and it's using higher field current to make appropriate charge.. etc. )
try this.. before the next start, disconnect vreg at genny, and polarize genny by jumping bat to field..
next, slip belt off.. jump bat to arm.. then jumper over to field.. genny should take off spinning real good. if it doesn't start.. or starts then stalls on a partial move.. or spins slow.. you have a gen problem.. perhaps bad segments on comutator.. etc.. or bad brushes. if it needs help starting to spin.. but spins once started.. still points to above problems with genny.
now.. assuming you get it to motor (spin).. hookup the connections fromt he vreg and start her right up.. does she start to charge at a lower rpm?
if so.. shut down and start her again later.. liek an hour or two... back to needing 2000 rpm?
one more thing.. get her to say 1500.. and let her run there for a couple minutes... does she eventually kick in and make the lamp go out?
post back
soundguy
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